Agricultural Engineering Comprehensive Board Exam Reviewer Volume 1 PDF

BELONIO AGRICULTURAL ENGINEERING AGRICULTURAL ENGINEERING COMPREHENSIVE...

BELONIO AGRICULTURAL ENGINEERING AGRICULTURAL ENGINEERING COMPREHENSIVE COMPREHENSIVE BOARD EXAM REVIEWER BOARD EXAM REVIEWER Volume I Volume I Agricultural Power, Machinery, and Allied Subjects Alexis T. Belonio UNIVERSITY PRESS Department of Agricultural Engineering and Central Philippine University Environmental Management Iloilo City, Philippines College of Agriculture Central Philippine University Iloilo City, Philippines CPU Press  AGRICULTURAL 2004 ENGINEERING COMPREHENSIVE BOARD EXAM REVIEWER Volume I Agricultural Power, Machinery, and Allied Subjects Alexis T. Belonio Department of Agricultural Engineering and Environmental Management College of Agriculture Central Philippine University Iloilo City, Philippines 2004 The Author: Alexis T. Belonio is a Professional Agricultural Engineer. Presently, he is an Associate Professor and Chairman of the Department of Agricultural Engineering and Environmental Management, College of Agriculture, Central Philippine University, Iloilo City. He finished his Bachelor of Science in Agricultural Engineering and Master of Science degrees from Central Luzon State University, Muñoz, Nueva Ecija. He has been deeply involved in teaching, research, project development, and entrepreneurial activity on various agricultural engineering projects since 1983. He was awarded by the Philippine Society of Agricultural Engineers (PSAE) as Most Outstanding Agricultural Engineer in the field of Farm Power and Machinery and by the Professional Regulation Commission (PRC) as Outstanding Professional in the field of Agricultural Engineering in 1993. In 1997, he was awarded by the TOYM Foundation and the Jerry Roxas Foundation as the Outstanding Young Filipinos (TOYF) in the field of Agricultural Engineering. He is presently a PSAE Fellow Member. As a dedicated professional, he serves as technical consultant to various agricultural machinery manufacturers in Region VI. He also serves as a Reviewer of the TGIM Foundation Review Center on the field of Agricultural Power, Machinery and Allied Subjects, and Agricultural Processing, Structures and Allied Subjects since 1998. He has written and published several research and technical papers. Acknowledgement: The author is very much thankful to the Lord God Almighty who inspired him to prepare this material for the graduates of agricultural engineering who will take the Professional Agricultural Engineering Licensure Examination. He also wishes to acknowledge Dr. N. Orcullo for the encouragement to serve as a reviewer for the aspiring agricultural engineers at the TGIM Review Center , Manila. To Salve and their children: Mike, Happy, Humble, Jireh, Justly, Tenderly, and Wisdom for their prayer and support. Trial Edition PREFACE This book, Agricultural Engineering Comprehensive Board Exam Reviewer Volume I was prepared primarily for the agricultural engineering students and graduate who are preparing for the licensure examination for the professional agricultural engineers. The contents of the book are series of questions and problems to make the students recall the fundamental theories and concepts in agricultural engineering. Most questions are tricky and practical in nature to test whether the students has digested the principles in each of the different subject matter in agricultural engineering. At the end of the book, the answer key for each question and problem are provided. This is the first of the three volumes of the Reviewer. The content deals with the power sources in agriculture, the different agricultural machines and equipment for production and post production operation , the design and manufacturing aspects of the machines, and the mechanization and management aspect. This book is still in draft form and is produced in limited copies. Additional items will be included in the future to make this material more comprehensive. Comments and suggestions are welcome for the improvement of this manuscript. God bless and may this book become useful to you at the moment! ALEXIS T. BELONIO Copyright  2004 by Alexis T. Belonio No part of this book is allowed to be photocopied or reproduced in any form without any written permission from the author. 1. A hand operated tractor which is suitable for both primary and 6. Weight transfer means secondary tillage used when field has been soaked for at least half a. to move paddy from the field to the granary a day to soften the soil. b. to transfer torrens title from the landlord to the tenant a. power tiller c. to shift implement’s weight to the tractor’s drive wheel in b. puddling-type floating tiller order to improve traction c. reaper d. none of the above d. none of the above 7. A tractor pulls a 1.0 meter wide heavy duty offset disk harrow at 2. Optimum axle speed for puddling-type floating tiller. an operating speed of 6 kph. What is the theoretical field capacity a. 100 rpm of the machine? b. 250 rpm a. 0.6 ha/hr c. 340 rpm b. 0.06 ha/hr d. none of the above c. 6 ha/hr d. none of the above 3. It is the ratio of the drawbar power and the wheel axle power. a. lugging efficiency 8. Automatic Draft Control in a modern farm tractor: b. traction efficiency a. automatically controls the amount of air passing through the c. mechanical efficiency radiator to regulate the operating temperature of the engine d. none of the above b. positions the implement at a constant height or depth relative to the tractor 4. The sum of all resistance acting on the tractor c. is the hydraulic implement hitch system which automatically a. coefficient of traction raises or lowers a soil engaging implement to maintain its draft b. running resistance at a pre-selected value c. rolling resistance d. none of the above d. none of the above 9. An international testing center for tractor. 5. Running resistance of a tractor includes a. International Rice Research Institute a. rolling resistance b. NEBRASKA b. air and acceleration resistance c. International Farm Machinery Institute c. slope resistance d. none of the above d. all of the above 1 2 10. When a machine is driven directly from the shaft of a power 15. A universal joint is: source, the power is transmitted using: a. a connector which can be used on all brands of tractor a. gear drive b. used to transmit power between two intersecting shafts usually b. sprocket and chain drive when the angle between them is variable c. direct drive c. a prohibited drug used universally d. none of the above d. none of the above 11. Belt size designation for agricultural V-belt is: 16. A diesel engine that operates at 2500 rpm will be used to drive an a. A, B, C, D, E irrigation pump which should turn at 1000 rpm. The pulley b. HA, HB, HC, HD, HE diameter for the pump is 4 inches. What is the recommended c. AA-BB-CC-DD-EE pulley for the engine? d. none of the above a. 2 in. b. 4 in. 12. It is a gripping device between power source. c. 10 in. a. clutch d. none of the above b. chain c. springs 17. An irrigation pump shall be driven by a single cylinder engine. d. none of the above The set-up has the following data: Engine rpm=2200, Pump rpm=1800, Diameter of Engine Pulley=25 cm, what should the 13. Machine element that transmit torque and power. diameter of the second pulley be? a. pulley a. 35.05 cm. b. bearing b. 30.55 cm c. shaft c. 53.05 cm d. none of the above d. none of the above 14. It is used to fasten shaft pulleys and hubs of gears together. 18. The length of a flat-belt pulley drive with the following data is: a. bolt Diameter of first pulley=300 mm, diameter of second pulley=400 b. springs mm, center distance of the pulley shaft=10 meters. c. keys a. 20.15 m d. none of the above b. 21.05 m c. 25.01 m d. none of the above 3 4 19. A corn sheller cylinder will be driven by 10 hp diesel engine thru 23. A type of plow that is widely adapted in breaking different types a V-belt drive. The engine has a speed of 1800 rpm while the of soil for turning and covering crop residues. required speed of the corn sheller is 650 rpm. The effective a. rotary plow diameter of the driver pulley is 12 inches. What should be the b. moldboard plow diameter of the driven pulley? c. disk plow a. 25 in. d. all of the above b. 33 in. c. 42 in. 24. The power required in pulling an implement. d. none of the above a. wheel power b. brake power 20. In the given problem in item above, what is the required length of c. drawbar power V-belt if the center distance between pulleys is 60 in. d. none of the above a. 169 in. b. 192.5 in. 25. A tillage equipment which displaces and shatters soil, used to c. 210 in. reduce soil strength and to bury or mix plant materials and d. none of the above fertilizers in the tilled layer. a. primary tillage equipment 21. If the belt has a capacity rating of 4.5 hp per belt, how many belts b. secondary tillage equipment are recommended for the drive? c. seeding and planting equipment a. 1 belt d. none of the above b. 2 belts c. 4 belts 26. A tillage implement consisting of two or four gangs of concave d. none of the above disks. a. disk plow 22. What is the recommended shaft diameter for the drive in item b. disk harrow above? c. cultivator a. ½ in. d. none of the above b. ¾ in. c. 1 in. 27. A tillage implement which shatters the soil without complete d. none of the above burial or mixing of surface materials. a. chisel plow b. lister plow c. disk plow d. none of the above 5 6 28. Mechanical manipulation of soil for any purpose. 33. Minimum soil manipulation necessary for crop production or for a. land grading meeting tillage requirements under existing soil condition. b. tillage a. no-tillage planting c. earth moving b. much tillage d. none of the above c. minimum tillage d. none of the above 29. A procedure in which planting is made directly into an essentially unprepared seedbed. 34. A tool which cuts plants materials and soil ahead of another tool. a. zero tillage a. coulter b. no-tillage planting b. jointer c. reduced tillage c. injector d. none of the above d. two of the above 30. The pushing or rolling of soil by a steeply inclined blade. 35. The force to propel an implement in the direction of travel. a. bulldozing a. draft b. chiselling b. drawbar horsepower c. subsoiling c. side draft d. none of the above d. none of the above 31. A secondary tillage operation which pulverizes, smoothens, and 36. The angle, in a vertical plane perpendicular to the direction of packs the soil during seedbed preparation and also controls weeds. travel, between a centralized tool or reference axis and the soil a. harrowing surface. b. listing a. tilt angle c. chiselling b. lift angle d. none of the above c. side angle d. none of the above 32. A tillage and land forming operation using a tool which splits the soil and turns two furrows laterally in opposite directions, thereby 37. It is deep chiselling below 16 in. for the purpose of loosening soil providing a ridge-and-furrow soil configuration. for root growth and/or water movement. a. listing a. ridging b. harrowing b. chiselling c. chiselling c. subsoiling d. none of the above d. none of the above 8 7 38. It is the part of the moldboard plow that receives the furrow slice 42. A type of implement type which is supported by two or three from the share and turns to break, crush, and pulverize the soil. wheels and is hitched to the drawbar of the tractor where it is a. share being pulled. b. shin a. integral-mounted c. moldboard b. trailing d. all of the above c. semi-integral d. none of the above 39. The part of the moldboard plow which is used to cut the soil. a. share 43. A type of plow which is equipped with plow bodies which turns b. shin the furrow slice to one side only. c. moldboard a. one-way plow d. all of the above b. two-way plow c. two of the above 40. It is a part of the plow bottom which helps to counteract the side d. none of the above pressure exerted by the furrow slice. a. shin 44. A type of plow which has two sets of bodies mounted b. landside symmetrically on a share frame which can be rotated over 180 c. share degrees along the longitudinal axis. d. none of the above a. reversible plow b. one-way plow 41. A type of implement which is directly attached to the tractor and c. lister plow its power lift is dependent upon the tractor engine for its general d. none of the above operation. a. semi-integral 45. The draft of a plow is dependent on the: b. integral-mounted a. size of the plow c. training or pull b. plowing depth d. none of the above c. type of soil d. all of the above 46. The factors that affect the draft of the plow: a. soil condition b. hitch to the tractor c. topography d. all of the above 9 10 47. Percentage of work done in pulling an average plow. 52. What is the force required to pull a single moldboard plow on a a. 50 % clay loam soil having a width and depth of cut of 30 cm and 15 b. 18 % cm, respectively. Soil draft is 8 psi. c. 30% a. 314 kg d. none of the above b. 253 kg c. 157 kg 48. Percentage of work of plow used in cutting furrow slice. d. none of the above a. 43% b. 58% 53. If the plow above has an average speed of 5 km/hr, what is the c. 24% drawbar horsepower of the plow. d. none of the above a. 4.6 hp b. 3.4 hp 49. Percentage of work of plow used in turning slice of soil. c. 5.1 hp a. 34% d. none of the above b. 25% c. 60% 54. A type of plow designed to reduce friction by making a rolling d. none of the above bottom instead of slides along the furrow. a. moldboard 50. A point in which all the horizontal and vertical forces in the plow b. rotary plow meets. c. disk plow a. side draft d. none of the above b. center of resistance c. center of gravity 55. A primary-tillage plow used for small rice farm. d. none of the above a. moldboard b. rotary 51. Drawbar horsepower is a factor of: c. spiral a. force exerted by plow d. all of the above b. speed of plow c. all of the above 56. A primary- tillage plow for rice farming that is attached in d. none of the above replacement to the cage wheel of a power tiller. a. rotary b. spiral c. disk d. all of the above 11 12 57. An angle of the disk plow in reference to the vertical plane. 62. A plow that is used to break up plow sole. a. tilt angle a. chisel plow b. disk angle b. lister plow c. all of the above c. subsoiler d. none of the above d. none of the above 58. An angle of the disk plow in reference to the direction of travel of 63. A secondary-tillage implement which stirs the soil using multiple the plow. number of disk blade arranged on a gang. a. tilt angle a. spike tooth harrow b. disk angle b. disk harrow c. all of the above c. two of the above d. none of the above d. none of the above 59. A plow that combines the primary and secondary tillage at the 64. A gang arrangement on a disk harrow consisting of two gangs of same time. It is used to cut and to pulverize the soil. disk placed end to end which throws the soil in opposite direction. a. disk plow a. double-action b. rotary plow b. single-action c. chisel plow c. offset e. all of the above d. none of the above 60. The power requirement of a rotary tiller for primary tillage. 65. A gang arrangement often called as “tandem harrow”. a. 50 kW/m a. double-action b. 30 kW/m b. single-action c. 70 kW/m c. offset d. all of the above d. none of the above 61. A plow primarily for loosening the soil. 66. A gang arrangement in which the harrow is not centrally located a. lister plow with respect to the tractor position. b. disk plow a. double-action c. chisel plow b. single-action d. all of the above c. offset d. none of the above 13 14 67. Factors that influence the depth of penetration of disk harrow. 72. The disk angle that will give the minimum draft for a disk plow a. angle of disk for a given width of cut is: b. angle of hitch a. 30-35 deg. c. size of disk b. 40-45 deg. d. all of the above c. 45-50 deg. d. none of the above 68. A trailing harrow that is hitched too high to the drawbar of the tractor will… 73. Seeding directly into previously undisturbed soil. a. have too deep penetration a. much tillage b. have too shallow penetration b. no-till c. have right penetration c. minimum tillage d. none of the above d. none of the above 69. The actual coverage rate by an implement based on the total field 74. A tillage operation traditionally performed in preparing a seedbed time. for a given crop grown in a given geographical area. a. field efficiency a. conventional tillage b. effective field capacity b. conservation tillage c. theoretical field capacity c. strip tillage d. none of the above d. none of the above 70. A moldboard plow has: 75. A primary tillage operation which manipulates the soil to a greater a. lower draft than disk plow depth than 300 mm. b. higher draft than disk plow a. reservoir tillage c. equal draft than disk plow b. deep tillage d. all of the above c. ridge tillage d. none of the above 71. By increasing the disk angle, the penetration of a disk plow, a. will be improved 76. An implement with integral power unit designed to provide both b. will be the same mobility and power for performing agricultural operation. c. will become poor a. mounted implement d. none of the above b. self-propelled machine c. trailed-mounted implement d. none of the above 15 16 77. A rotary tiller has 2 m operating width. If the tractor runs at a 81. A single-bottom moldboard plows on a clay loam soil (8 psi draft) speed of 2 km/hr, the theoretical field capacity of the machine is: having an effective width of cut of 0.3 m. and a depth of cut of 15 a. 4.0 ha/hr cm. What is the force exerted by a plow? b. 0.4 ha/hr a. 230 kg c. 0.04 ha/hr b. 253 kg d. none of the above c. 310 kg d. none of the above 78. The field capacity of the rotary tiller was measured at 0.23 ha/hr. If the operating width and speed of the machines are 1.5 m. and 2 82. What is the drawbar horsepower of the plow in item above if the kph, respectively, the field efficiency of the tiller is: plowing speed is 5 kph? a. 64% a. 4.6 hp b. 77% b. 3.4 hp c. 85% c. 7.4 hp d. none of the above d. none of the above 79. The effective field capacity of the rotary tiller tilling theoretically 83. A 3-bottom plow is plowing at a speed of 8 kph. The effective at 0.4 ha/hr for an efficiency of 85% is: width per plow bottom is 25 cm. If the plowing efficiency is a. 0.34 ha/hr 80%, what is the theoretical field efficiency? b. 0.24 ha/hr a. 0.4 ha/hr c. 0.43 ha/hr b. 0.6 ha/hr d. none of the above c. 0.7 ha/hr d. none of the above 80. The effective field capacity of 2 moldboard plows having 25 cm width each plowing at a speed of 7 km/hr for a field efficiency of 84. The effective field capacity of the plow in item above is: 80% is: a. 0.48 ha/hr a. 0.20 ha/hr b. 0.53 ha/hr b. 0.28 ha/hr c. 0.72 ha/hr c. 0.32 ha/hr d. none of the above d. none of the above 17 18 85. What is the required drawbar pull for a 5-meter tractor drawn spike 89. An equipment used to place seed in a furrow. tooth harrow with a specific draft of 89 kg/m? a. planter a. 345 kg b. seeder b. 445 kg c. broadcaster c. 500 kg d. all of the above d. none of the above 90. An equipment used to place plant parts to a prepared furrow. 86. What is the drawbar-horsepower of the implement in item above if a. planter it is running at a speed of 6 kph. b. seeder a. 8 hp c. broadcaster b. 10 hp d. all of the above c. 23 hp d. none of the above 91. A machine that prepares the soil, meters the seed, and positions the seed in one operation. 87. Headland is: a. broadcaster a. the strip of the land at the ends of the field used for turning by b. drill field machinery c. field distributor b. a piece of land owned and tilled by the head of family d. none of the above c. land at the top of the hill d. none of the above 92. A machine, which is cylindrical in shape, designed for planting pre-germinated rice seed in rows. 88. In a 200-hectare corn project, the field has to be tilled in 30 days. a. broadcaster What size of heavy-duty offset-disk harrow should be selected if b. drum seeder the tractor to be used operates at 5 kph. Assume a 75% field c. jab planter efficiency and an 8-hour working day. d. none of the above a. 1.5 m b. 2.2 m 93. Determine the number of plants for a 2-hectare farm planted with c. 2.0 m corn with a spacing of 25 cm x 45 cm. d. none of the above a. 150,000 plants b. 177,777 plants c. 185, 877 plants d. none of the above 19 20 94. A scattering of seeds on the surface of prepared soil. 99. A mechanically-operated machine that removes weeds or grasses a. drill seeding from the crops. b. hill dropping a. seeder c. broadcasting b. weeder d. none of the above c. cultivator d. none of the above 95. It is a planting method wherein seeds are deposited, either singly or in group, in a water soluble tape under controlled condition. 100. It is the ratio between the number of weeds removed by the a. precision planting weeder to the number of weeds present per unit area. b. seed-tape planting a. weeding index c. hill dropping b. weeding rate d. none of the above c. weeding capacity d. none of the above 96. It is a machine that places rice seedlings at a proper spacing on a well-prepared paddy soil. 101. A machine that breaks the liquid droplets of effective size and a. rice seeder distributes them uniformly over the surface or space to be b. rice transplanter protected, and regulates the amount of chemical solution to avoid c. all of the above excessive application that might prove harmful or wasteful. d. none of the above a. duster b. sprayer 97. When Agricultural Engineer calibrates a sprayer, he: c. all of the above a. measures the diameter of a sprayer tank d. none of the above b. cleans the nozzles. c. measures and adjust its application rate 102. Primary factor that affects the performance of the sprayer. d. none of the above a. spray-particle size b. spraying time 98. In the Philippines, rice is usually transplanted c. spray materials a. for weed control reasons as the seedlings have a head start d. none of the above over the weeds b. to give employment to landless farm workers c. to prevent rats and birds from eating the seeds. d. none of the above 21 22 103. It is a sprayer apparatus consisting of pressure source and controls 107. A machine that cuts rice stalks and places them on a windrow and specifically employing an over-the-crop boom with automizer where they are gathered and bound into sheaves and carried to a arranged to provide uniform coverage of the treated surfaces. thresher. a. boom sprayer a. scythe b. knapsack sprayer b. stripper harvester c. compressed-air sprayer c. reaper d. none of the above d. combines 104. A field sprayer that is being carried at the back by means of a 108. A machine that involves the combing the grain from the plant shoulder straps. while the plant remain anchored. a. compressed-air sprayer a. reaper b. knapsack sprayer b. stripper harvester c. power sprayer c. combine harvester d. none of the above d. all of the above 105. A mechanical or thermal device that produces a liquid dispersion 109. A machine that detaches the grain from a panicle. having a volume median diameter of less than 50 um. a. reaper a. knapsack sprayer b. thresher b. aerosol generator c. sheller c. compressed-air sprayer d. all of the above e. none of the above 110. A machine used in separating the kernels from the cob. 106. An apparatus, which consists of a hopper, a metering unit, and a a. grader distribution device, that uses either gravity, centrifugal force, or b. sheller pendulum action to spread granules to the surface of the entire c. thresher area to be treated. d. none of the above a. broadcast spreader b. granular applicator c. power sprayer d. none of the above 23 24 111. The part of a rice thresher which encloses the threshing cylinder 115. A type of throw-in thresher which moves the materials being and allows the separation of the grains from the panicle. threshed in a helical manner around the threshing cylinder. a. threshing cylinder a. axial-flow-thresher b. oscillating screens b. through-flow thresher c. concave c. hold-on thresher d. none of the above d. all of the above 112. A type of a mechanical thresher in which rice stalks are fed into 116. Factors affecting the power requirement of a rice thresher. the threshing chamber while the stalks are either mechanically- or a. feeding rate manually-held during threshing operation. b. moisture content a. hold-on thresher c. length of straw b. throw-in thresher d. all of the above c. axial-flow thresher d. none of the above 117. It is the ratio of the weight of clean threshed grain to the grain input. 113. A type of mechanical rice thresher which detaches and separates a. threshing efficiency the grains from the panicles by feeding the rice-in-stalks into the b. threshing recovery machine. c. threshing output a. axial-flow thresher d. all of the above b. throw in thresher c. hold-on thresher 118. The ratio of knife velocity to forward velocity of rice reaper. d. none of the above a. 1.35 b. 2.55 114. A type of throw-in thresher wherein rice-in-stalks are fed in c. 0.55 between the cylinder and the concave and go directly out of the d. none of the above threshing chamber. a. axial-flow thresher b. through-flow thresher c. hold-on thresher d. all of the above 25 26 119. In a field demonstration of a rice reaper with 1.2-m cutter bar 123. A tillage or soil preparation in which plant residues are performance showed that the average travel speed of the machine specifically left on or near the surface. is 3 kph. The average width of cutter bar actually utilized is 1.0 m. a. strip tillage Time lost in crossing the dike is 5 min/ha and 10 min/ha for b. mulch tillage repair. Turning and other idle time is 10 % of the effective c. optimum tillage operating time while removing field obstruction and clogging is d. none of the above 15 min/ha. What is the field capacity of the machine? a. 0.36 ha/hr 124. A steel containing 0.035-0.4 % carbon and is widely used for b. 0.25 ha/hr production of steel plate, structural steel, bars, etc. c. 0.18 ha/hr a. mild steel d. none of the above b. hard steel c. soft-centered steel 120. What is the effective field capacity of the machine in item above? d. all of the above a. 0.25 ha/hr b. 0.30 ha/hr 125. The center to center distance between overlapping broadcast c. 0.35 ha/hr applications. d. none of the above a. effective width b. swath 121. What is the time lost in turning and other idle time per hectare of c. broadcasting width the reaper in item above? d. all of the above a. 10 min b. 17 min 126. The portion of a combine comprising the mechanism for gathering c. 20 min crops. d. none of the above a. crop gatherer b. star wheel 122. It is the ratio between the mass of fuel consumed per unit of time c. header and the corresponding measured power. d. all of the above a. specific fuel consumption b. fuel to mass ratio c. fuel consumption rate d. none of the above 27 28 127. The horizontal distance, perpendicular to the direction of travel, 132. In trade circles, CIF stands for an implement performs its intended function in one pass. a. Cash-In-Fist a. implement width b. Cost, Insurance, and Freight b. operating width c. Cost-In Freight c. side draft d. None of the above d. none of the above 133. A clutch that is used to drive a machine element in only one 128. A gas, a liquid, or a solid used to propel or transport chemical. direction is a. spray material a. slip clutch b. spray nozzle b. overrunning clutch c. carrier c. friction clutch d. all of the above d. none of the above 129. The portion of an implement designed to connect the implement 134. A clutch that limits the amount of torque or power that is to the power source. transmitted through the shaft to the driven member. a. connector a. slip clutch b. clutch b. overrunning clutch c. hitch c. friction clutch d. all of the above d. none of the above 130. The draft of implement in terms of force per unit area of tilled 135. The unbroken side of furrow is called cross-section. a. dead furrow a. implement draft b. furrow wall b. specific draft c. back furrow c. line draft d. none of the above d. all of the above 136. It is a distinguishing symbol affixed to products by a manufacturer 131. Factor of Safety engineering science refers to: in order to identify them as his goods. a. the excess amount of materials designed into a machine to a. trade name ensure that it does not break down b. trade mark b. the ratio of the ultimate strength of a material or component to c. brand name the working stress it is expected to be subjected to d. all of the above c. the safety of workers in the factory d. none of the above 29 30 137. A name given by a manufacturer to its product to distinguish them 141. What is the total head loss in meters of the pump system in item from the ones produced by other manufacturers. above. a. trade mark a. 54.8 m b. manufacturer’s name b. 48.5 m c. brand name c. 84.5 m d. none of the above d. none of the above 138. Raise ridge formed when plowing starts in the middle of strip. 142. If a diesel engine will be used to drive the pump in item above, a. back furrow what is the recommended horsepower for the engine? (80% b. dead furrow engine efficiency) c. furrow wall a. 80.9 hp d. none of the above b. 85.5 hp c. 60.8 hp 139. Open trench left during plowing when the strips are finished. d. none of the above a. dead furrow b. back furrow 143. If a gasoline engine will be used to drive the pump in item above, c. furrow wall what is the power requirement? (70% engione efficiency) d. none of the above a. 97.2 hp b. 102.6 hp 140. One-thousand gallons per minute (1000 gpm) of water is to be c. 125.7 hp pumped from a river to a farm 150-ft above the river. What is the d. none of the above required horsepower to drive the pump considering a pumps efficiency of 70 % and the friction and other losses of 20 % of the 144. A farmer wishes to spray his cotton plantation at a rate of 300 static head. gallons per hectare. Sixteen nozzles, 18 inches apart will be used. a. 64.8 hp The froward speed of the tractor will be 5 kph. Compute the field b. 68.4 hp capacity of the sprayer in hectare per hour. c. 48.6 hp a. 5.6 ha/hr d. none of the above b. 3.6 ha/hr c. 4.7 ha/hr d. none of the above 31 32 145. What is the required pump capacity for the sprayer above? 149. What is the theoretical field capacity of a tandem disk harrow a. 23.5 gpm pulled by 1.5 m wide tractor running at a speed of 10 kph? b. 18.3 gpm a. 1.5 ha/hr c. 20.6 gpm b. 2.5 ha /hr d. none of the above c. 5.1 ha/hr d. none of the above 146. A tractor operating at 3.5 mph develops a drawbar pull of 3000 pounds. Estimate the required drawbar horsepower for the tractor. 150. Operating width of the implement minus the overlap is a. 28.0 hp a. implement width b. 20.9 hp b. effective width c. 19.8 hp c. operating width d. none of the above d. all of the above 147. The specific fuel consumption of a tractor is 0.3 lbs per BHP- 151. A soil-handling implement which turn uniform ridges of soil to hour. If the heating value of the fuel is 19500 BTU/lb, what is the predetermined shape. brake thermal efficiency? a. furrower a. 35.4 % b. bed shaper b. 54.3 % c. middle breaker c. 43.5 % d. none of the above d. none of the above 152. When middle breaking will be carried out on the field 148. A corn plantation requires a population of 37,000 plants per a. a lister is needed to form a furrow between rows of plant hectare. The average emergence is 90 % and the row spacing is to b. a ridge and furrow soil is made prior to planting be 1.2 meters. If the seed are to be drilled, what should be the seed c. hard soil is broken at the middle to reduce its size spacing? d. none of the above a. 0.4 m b. 0.3 m 153. When a material is to be inserted into the soil, the tillage to be c. 0.2 m used is d. none of the above a. jointer b. coulter c. injector d. all of the above 33 34 154. When a disk plow is set on vertical position, the plow will 159. A self-propelled implement a. penetrate a. requires a tractor in order to do its function b. will not penetrate b. requires a stationary engine in order to do its function c. remain in the position c. does not require a tractor to operate d. none of the above d. none of the above 155. A tillage system which consist of fewer or less energy intensive 160. A booklet provided by manufacturers in which the step-by-step optimum compared with conventional tillage. procedure for repair or disassembly of parts are given. a. minimum tillage a. operator’s manual b. no-till tillage b. technical manual c. reduce tillage c. product catalog d. all of the above d. all of the above 156. When 30 % or less of the soil surface is tilled, the tillage operation 161. A booklet form provided by manufacturers in which adjustment, employed is care and maintenance procedure, and safety of the machine are a. minimum tillage indicated. b. strip tillage a. operator’s manual c. ridge tillage b. technical manual d. all of the above c. product catalog d. none of the above 157. A soil-tool reaction in which soil slides over the surface of the tillage tool without significant adhesion. 162. If hitch of a plow is placed above the vertical line of pull, a. sliding a. there will be lifting action at front of the plow and its bottom b. scouring will tend to run shallow particularly to hard ground c. soil cutting b. the plow share will tend to worn out easily d. none of the above c. the plow bottom will penetrate deeply d. none of the above 158. Agricultural tractors, self-propelled machines, implement designed for field operation are examples of a. farmstead equipment b. agricultural field equipment c. agricultural implement d. none of the above 35 36 163. It is the line of pull that is straight from the center-of-load through 167. A type of power sprayer where the spray pressure is built up by the point where the drawbar of the draft is attached to the drawbar the direct action of the pump on the liquid spray material of the tractor. a. hydraulic sprayer a. horizontal line draft b. blower sprayer b. vertical line draft c. hydro-pneumatic sprayer c. side draft d. all of the above d. none of the above 168. The size of a moldboard plow is determined 164. It is the line of draft that is straight line from the center of a. from the distance measured at the wing of the share to the land resistance or load to the point where plow drawbar is attached to side the tractor drawbar. b. from the width of the plow measured at the intersection of the a. horizontal line draft share an the moldboard b. vertical line draft c. from the width of the moldboard c. side draft d. non of the above d. none of the above 169. Tractor tire used to propel as well as to provide good floatation is, 165. When the center-of-load of a plow is not on the same line of the a. implement tire center of power b. traction tire a. there will be a side draft. c. steering tire b. tractor will be partly pulled sideways. d. all of the above c. forces on the tractor will be carried by the rear of the tractor wheel. 170. Bearings used for disk plow bottom are d. all of the above a. tapered roller bearing b. spherical roller bearing 166. The rate of planting, or pounds of seeds planted per acre that gives c. ball bearing a desired quality of plants without thinning is d. none of the above a. seeding rate b. planting to stand 171. A type of implement that is used to be attached to the three-point c. planting capacity hitch and hydraulic lift system of a tractor. d. none of the above a. trailing implement b. semi-mounted implement c. mounted implement d. all of the above 37 38 172. A compartment provided for the harrow to aid in penetration. 177. To reduce the size of spray particle, a. weight boxes a. increase the operating pressure of the sprayer. b. ballast b. adjust the control valve opening of the sprayer. c. ballast compartment c. adjust the opening of the spray nozzle. d. all of the above d. none of the above 173. If a sprocket is used for a chain, a sheave is used for … 178. A machine used to kill weed seeds by microwave heating during a. flat belt weeding operation b. gear a. zapper c. v-belt b. microwave oven d. all of the above c. flame thrower d. all of the above 174. Substance added to spray as stickers, stabilizers and conditioning agent 179. A device used to hold spray nozzle close to the soil so those a. water chemicals can be sprayed on young grass in the plant row. b. petroleum gas a. spray shield c. gelatin b. spray boom d. all of the above c. spray holder d. none of the above 175. Pump recommended for a sprayer that is used for abrasive spray materials 180. It is used between the cultivator sweep and the plant row to a. centrifugal pump prevent soil from covering small young plants. b. diaphragm pump a. shield c. gear pump b. fender d. all of the above c. spread bar d. none of the above 176. Approximate pressure used in spraying weedicide. a. 10-25 psi 181. When soil is thrown to the plant during cultivation, the operation b. 25-40 psi is c. 40-60 psi a. hilling-up d. none of the above b. barring-off c. listing d. all of the above 39 40 182. When soils are thrown away from the plants during cultivation, 187. A secondary tillage implement consisting of one or two in-line the operation is gang rollers used for crushing soil clods and compacting the soil. a. hilling-up a. roller tiller b. barring-off b. packer c. sweeping c. roller harrow d. none of the above d. none of the above 183. It is the true point of hitch or center-of-pull of an implement. 188. A primary or secondary tillage implement used for broadcast or a. center of power for strip tillage and also used as chemical incorporators prior to b. center of resistance planting. c. center of load a. roller tiller d. all of the above b. roller harrow c. packer 184. The effective drawbar pull of the tractor is reduced for every d. none of the above percent of grade by a. 0.1 % 189. It is a plow consisting of a strongly constructed frame and a b. 1 % vertical leg drawn to a subsoil and the bullet-shape attachment c. 10 % creates a tube like cavity acting as a drainage channel. d. none of the above a. subsoiler b. bullet plow 185. An instrument used to measure the draft of a plow c. mole plow a. dynamometer d. all of the above b. spring scale c. pressure gauge 190. In designing a rice thresher, the most important factors affecting d. all of the above threshing efficiency is a. rpm of the cylinder 186. The maximum friction in the moldboard plow is b. peripheral speed of the cylinder a. at the point of share c. diameter of the cylinder b. between the share and the moldboard d. none of the above c. at the moldboard d. none of the above 41 42 191. A kind of chemical used for spraying which form a finely-divided 195. Growing of more than one crop on the same land in one year solid particles when mixed with water. a. mixed crop a. emulsion b. multiple cropping b. suspension c. inter-cropping c. solution d. none of the above d. all of the above 196. Growing of two or more crops simultaneously and intermingled 192. An insecticide that kills insects when insects suck on plant tissues with no row arrangement. a. contact a. mixed cropping b. stomach b. inter cropping c. systemic c. multiple cropping d. all of the above d. none of the above 193. A hitch system for a tractor suitable for large, heavy implement 197. Growing of two or more crops in alternate rows. for trailer a. inter-planting a. three-point hitch system b. inter-cropping b. drawbar hitch system c. inter-culture c. semi-mounted hitch system d. all of the above d. all of the above 198. It is a practice of planting short term annual crop with long-term 194. A tractor drive wheel under load rotates at 1200 revolution in annual or biennial crops. passing a newly cultivated field. At no load, the tractor drive a. inter-planting wheel is able to rotate at 1125 revolution. What is the percent b. inter-cropping slippage of the tractor drive wheel? c. inter-culture a. 5.6 % d. all of the above b. 6.2 c. 8.1 % 199. It is the cultivation of one crop underneath a perennial crop. d. none of the above a. inter-planting b. inter-cropping c. inter-culture d. all of the above 43 44 200. Application of chemical to a small restricted area, usually to 205. Application of chemical to the base of a tree around the trunk or control the spread of pest. by injection into slasher or cuts. a. spot treatment a. basal application b. space application b. broadcast application c. direct application c. band application d. all of the above d. none of the above 201. Dispersion of liquid or dry particles in air in such a manner that 206. Application of chemical in parallel strips leaving the area between target pest are exposed to chemical. strips free of chemicals. a. spot treatment a. basal application b. space treatment b. broadcast application c. direct application c. band application d. all of the above d. none of the above 202. Application of chemical to the stem, fruit, leaves, needles, or 207. Soil blocks or masses that are cut, sheared or broken loose by blades of a plant. tillage tool. a. direct application a. furrow slice b. foliar application b. clod c. space application c. loose soil d. all of the above d. none of the above 203. Application of chemical to a specific area such as row, bed, or at 208. It is a change in the value of a machine. base of the plant a. cost reduction a. direct application b. depreciation b. spot treatment c. lost of value c. space application d. none of the above d. none of the above 209. Actual rate performance of machine on land or crop processed in a 204. Application of chemical over entire area to be treated. given time based upon total field time. a. basal application a. theoretical field capacity b. band application b. effective field capacity c. broadcast application c. field efficiency d. none of the above d. all of the above 45 46 210. The rate of performance obtained if a machine performs its 215. It is used to protect tractor operator from dust, noise, rain and function 100 % of the time of a given operating speed using 100 heat. % of its theoretical width. a. operator’s shield a. theoretical field capacity b. chassis b. effective field capacity c. cab c. field capacity d. none of the above d. none of the above 216. A device that transfer seed from the seedbox to the coulter tube at 211. The amount paid for hiring equipment and operating services to a fixed rate perform a certain task. a. seed feeder a. custom cost b. seed distributor b. operating cost c. seed metering device c. variable cost d. all of the above d. none of the above 217. A device at the header of a combine for severing the plant stalk. 212. The ratio of engine power used in performing an operation to a. cutting mechanism engine power available. b. star wheel a. field load tractor c. pickup b. engine efficiency d. none of the above c. engine performance ratio d. all of the above 218. A device for gathering crops on a windrow of a combine. a. header 213. The amount of any material applied per unit treated by a sprayer. b. pickup a. through put rate c. star wheel b. application capacity d. none of the above c. application rate d. all of the above 219. A transport machine used in agriculture suitably designed for coupling to an agricultural tractor or self-propelled combine. 214. A sprayer designed to charge the spray droplet so that there is a a. agricultural wagon powerful attraction between the plants and the charged droplet. b. agricultural loader a. electromagnetic sprayer c. agricultural trailer b. electrolytic sprayer d. none of the above c. electrostatic sprayer d. all of the above 47 48 220. A harvest residue discharged from cleaning devices of a combine. 224. In ASAE, safety code for laboratory equipment and typical a. foreign matters application, the safety yellow color stands for b. cut straw a. danger stop c. chaffs b. warning d. none of the above c. caution d. none of the above 221. What is the application rate of a granular broadcast spreader required to apply 1 ton of manure at a distance of 1000 meters. 225. A safety gray color at the ASAE safety code is used for The machine swath is 2 meters. a. floor or work area around machines and equipment a. 500 kg/ha b. traffic and housekeeping areas b. 5000 kg/ha c. areas with radiation hazard c. 50,000 kg/ha d. all of the above d. none of the above 226. When pipeline is painted with green and white color, the safety 222. An external shaft on an agricultural tractor other than the PTO code means that the pipe contains which provides rotational power to implements that are usually a. liquid of inherently low hazard front and side mounted. b. fir extinguishing materials a. belt drive shaft c. flammable or explosive materials b. secondary PTO d. all of the above c. auxiliary PTO d. none of the above 227. The standard length of stroke of hydraulic remote control cylinders for trailing-type agricultural implement is 223. A rotating device located inside the hopper of gravity flow a. 6 to 12 inches applicator and broadcast spreaders to enhance delivery of granules b. 8 to 16 inches to the adjustable orifice of the machine. c. 10 to 20 inches a. mixer d. none of the above b. stirrer c. agitator 228. Minimum thrust per drawbar horsepower of hydraulic remote d. none of the above control cylinder for trailing type agricultural implement. a. 68 kg b. 78 kg c. 88 kg d. none of the above 49 50 229. Assume that you are the Agricultural Engineer of a 500-hectare 233. The perpendicular distance between the upper hitch point and the corn farm with soil type that gives 10 psi draft when plowing at a common axis of the lower hitch point of a tractor. speed of 4 km/hr. Compute the drawbar horsepower required to a. mast height pull a three-disk plow with effective cut of 12 inches per disk at a b. hitch vertical height plowing depth of 6 inches. c. stud height a. 14.3 hp d. none of the above b. 23.4 hp c. 34.5 hp 234. The distance between lower hitch point measured at the base of d. none of the above the lower hitch stud, or the distance between the inner most restraining means provided on the implement. 230. How many hectares in item above does a tractor pulling a three a. lower hitch-point spread disk plow would be able to plow in one day (16 hours operation) b. lower hitch point distance assuming a total time loss of 30%? c. lower hitch point clearance a. 2 ha/day d. none of the above b. 4 ha/day c. 6 ha/day 235. ASAE classification for slow moving vehicle such as animal- d. none of the above drawn or motorize conveyance, including implements in tow should not exceed a travel speed of 231. How many days in item above are required to plow the 500- a. 30 kph hectare farm using ten units of the same kind of tractor and plow? b. 40 kph a. 8.3 days c. 50 kph b. 12.5 days d. none of the above c. 15.4 days d. none of the above 236. For safety purposes, slow-moving vehicle such as agricultural machines must be provided with 232. What is the amount of fuel consumed in liters per 16 hours day in a. rear bumper to protect the machine from impact item above, of one tractor unit if the specific fuel consumption is 1 b. identification emblem to guide motorist that the machine is lb/dhp-hr and the specific gravity of the fuel is 0.8? slow-moving a. 69.7 liters c. signal light when travelling b. 130.0 liters d. none of the above c. 95.1 liters d. none of the above 51 52 237. What is the cutting width of the single disk harrow set at 18 241. The identification of the given tire with its maximum degree working angle containing 20 disks spaced at 30 cm? Disk recommended load when used in specific type service. diameter is 40 cm. a. tire rating a. 553.5 cm b. tire lug rating b. 453.7 cm c. ply rating c. 540.6 cm d. all of the above d. none of the above 242. A machine that is used with small plow and harrow designed for 238. If the harrow in item above is a tandem disk harrow, what is the rice farming operation. cutting width of the machine? a. puddling-type floating tiller a. 589.5cm b. power tiller b. 567.4 cm c. hydro tiller c. 530.6 cm d. all of the above d. none of the above 243. A ribbed type v-belt where the ribs are positioned along the belt 239. A 30-disk double-offset-disk harrow is travelling at a speed of 10 length. kph. If the disk diameter is 40 cm spaced at 30cm, what is the a. V-ribbed belt cutting width of the harrow? b. Cogged belt a. 860.5 cm c. Timing belt b. 875.4 cm d. None of the above c. 850.3 cm d. none of the above 244. The center of resistance of moldboard plow is located a. at the center of moldboard 240. What is the theoretical field capacity of the harrow in item above? b. at the intersection of moldboard and share a. 8.6 ha/hr c. at the center of share b. 8.7 ha/hr d. none of the above c. 8.5 ha/hr d. none of the above 245. ASAE stands for a. American Society of Automotive Engineers b. American Society of Agricultural Engineers c. American Society of Air-conditioning Engineers d. All of the above 53 54 246. The optimum puddler speed for puddling-type floating tiller is 251. If soil clods are needed to be inverted during plowing, the a. 100-150 rpm agricultural engineer will recommend a b. 200-250 rpm a. disc plow c. 300-350 rpm b. moldboard plow d. none of the above c. all of the above 247. Part of soil profile exploited by the roots of the plant. 252. An agricultural engineer will recommend in order to loosen the a. root bed soil during plowing, a b. root zone a. subsoiler c. tillage zone b. field cultivator d. none of the above c. chisel plow d. none of the above 248. The soil profile modified by tillage or amendments for use by plant roots 253. It is a factor which consider the physical condition, heart-beat a. root bed ratio, and body weight of a person when operating a machine. b. root zone a. humanistic factor c. tillage zone b. mechanical operation factor d. none of the above c. ergonomic factor d. all of the above 249. When plowing requires for the soil to be incorporated or mixed with grasses and weeds, as an Agricultural Engineer you will 254. Ten-hectares of rice farm is to be harvested manually in 2 days recommend using sickle (8hr/day). If the field efficiency is 80 % and the man- a. disc plow hour/hectare for harvesting is 60, how many persons will be b. rotary plow needed to harvest the rice? c. moldboard plow a. 27 persons d. all of the above b. 37 persons c. 47 persons 250. Manual transplanting of rice is advantageous over mechanical rice d. none of the above transplanter in terms of a. intelligence b. dexterity c. cost d. none of the above 55 56 255. Compute the power developed by 600 kg horse pulling 80-kg load 260. Power take-off rpm of lawn mower and garden ride-on tract