Agricultural Engineering Comprehensive Board Exam Reviewer PDF 2004

B E L O AGRICULTURAL ENGINEERING N I COMPREHENSIVE BOARD EXAM...

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