IBONG TIRIRIT (MDSP 4).pdf

When cutting material in a lathe, the harder IBONG TIRIRIT (MDSP 4) the material being cut, the tool bit should have Chuck used on turret lathe is A. less si...

When cutting material in a lathe, the harder IBONG TIRIRIT (MDSP 4) the material being cut, the tool bit should have Chuck used on turret lathe is A. less side rake A. collet chuck B. more side rake B. four jaw self centering chuck C. more top rake C. Magnetic Chuck D. no side rake D. Three jaw independent chuck Answer: A Answer: D On xx heavy pipe the extra metal is added in Angle plate is used for the A. cutting gears in a shaper A. outside B. cutting gears in a milling B. inside C. cutting tapers in a lathe C. half on the inside, half on the outside D. fixing job cut angles is grinder D. three quarters on the outside, one quarter on the inside Answer: A Answer: B For machining the flange of 90 elbow on a lathe, which of the following device is used? Valve seats are usually: A. Angle plate A. screwed in B. Catch Plate B. dropped in C. Face Plate C. pressure in D. Lathe plate D. A or C Answer: C Answer: D Angle Plate is used for When grinding in valves the disc is secured to A. cutting gears in a shaper the stem by: B. cutting gears in a milling A. inserting a cotter pin C. cutting tapers in a lathe B. placing emery cloth between stem and disc D. fixing job cut angles is a grinder C. welding D. A or B Answer A Answer: D A sine bar can not be used without a/ an A. angle gage A fresh-water tank is located at the top. What B. micrometer will the pressure on it outlet in the engine C. slip gage room 50’ below the tank? D. vernier caliper A. 20 psi B. 21.7 psi Answer: A C. 23 psi D. 25 psi The operation of finishing a drilled hole to the correct size is known as Answer: B A. counting boring B. counter sinking In a duplex reciprocating pump: C. reaming A. the slide valve for the one cylinder is D. spot facing controlled in the piston of the other cylinder B.both slide valves operate simultaneously Answer: C C. each slide valve is controlled by its own piston rod Carbon steel drill should be operated at D. one slide valve operates the other slide A. speed less than that when using a high valve speed drill B. speed greater than that when using a high Answer: A speed drill C. the different speed as that when using high The jerky operation of a reciprocating pump speed drill may be caused by D. the same speed as that when using a high A. small leaks in the suction line speed drill B. suction valve only partially open C. dirty suction valve Answer: B D. any of the above Answer: D 1 It is used in the production of the flat surface on pieces two large or too heavy to The coils in the evaporator are attached to hold in a shaper. the headers by: A. Grinder A. pipe nipples B. Planer B. union – type fitting C. Shaper C. welding D. Shaver D. bolted flanges Answer: B Answers: B A machine tool used to produce a variety of When distilling salt water the cooling – water surface of surfaces by using a circular type discharge from the distiller is fed back to cutter with multiple teeth called the evaporator as feedwater: A. broaching machine A. to cut down on the amount of cooling water B. grinding needed C. lathe machine B. to prevent n excess amount of cooling water D. milling machine from being discharge to the bilges C. to supply hot water to the evaporator for Answer D more economical operation D. none of the above Cutting tool used to finish internal and external surfaces by the use of cutter called Answer: C a broach, which has a series of cutting edges of teeth. An “offset” in pipe fitting refers to: A. Broaching machine A. a cut-off running at right angles to the B. Lathe machine original piping C. Planer B. two pipes running parallel to each other D. Shaper C. a bend in the pipe D. two sizes of pipe in the same run Answer: A Answer: C Group of thin steel strips used for measuring clearances. If a piston-type flush valve is not operating A. Tachometer properly, the most likely cause would be: B. Micrometer A. a plugged by – pass hole C. Feeler gage B. a cracked diaphragm D. Caliper C. a stuck pilot valve D. any of the above Answer C Answer: A Bind of chuck, which should not be used where accuracy desired called Before installing a new flange gasket be sure A. collet chuck that the: B. four jaw shuck A. flange faces are painted C. magnetic chuck B. isolating valves are open D. universal chuck C. flange faces are absolutely clean D. old gasket is in place Answer D Answer: C The process used to retard compression trust on iron pipe and fitting is called: What is a standard wire gage: A. timming A. #10 larger B. soldering B. #25 is smaller than #20 C. galvanizing C. # 1 is smaller than # 2 D. sulphurizing D. # 30 is larger than # 25 Answer: C Answer: B The system used for breaking scale from the Which of the following tools would be most evaporator coils while the evaporator is in useful when taking leads on bearings operation is called: A. dividers A. recirculating B. outside calipers B. blowing-down C. micrometer C. cracking-off D. center gage D. dumping Answer: C Answer: C 2 The wrench size for a ¼” nut is: A. Dial Gage A. 1-1/4. B. Dial Indicator B. 1-1/2 C. Tachometer C. 3/4 D. Speedometer D. 10/24 Answer: B Answer: A A tool used for measuring diameters. Which of the following would cause hot A. Caliper bearings? B. Manometer A. improper oil C. Tachometer B. dirt in oil D. Pyrometer C. improper alignment D. all of the above Answer: A Answer: D A process of forming metals by the use of dies after the metal is forced to its plastic Melting point of Babbit is approximately: range. A. 1000 deg. F A. Casting B. 650 deg. F B. Forging C. 750 deg. F C. Rolling D. 500 deg. F D. Turning Answer: B Answer: C What is pouring Babbit in: Which of the following does not have to be A.can be poured in several pourings lubricated when drilling? B. must be poured all at one time A. Steel C. can be done at intervals B. Brass D. must be done in cool place C. Monel D. Tool Steel Answer: B Answer: B A machine tool, which is very similar to a shaper except the ram reciprocals vertically The tool to use when cutting a hole in the rather that horizontally side of a round piece of metal is called a: A. Lathe A. vine B. Grinder B. jaw holder C. Planer C. “V” block D. Slotter D. chuck Answer D Answer: C The operation of machining the end of a work When measuring a drill for size measure across piece to make a square with the axis. the: A. Buffing A. margin B. Honing B. flutes C. Lapping C. shank D. Squaring D. point Answer: D Answer: A The operation of enlarging a hole by means of N.C. stands for: an adjustable cutting tool with only one A. neutral cut cutting edge. B. national coarse A. Boring C. national cut B. Broaching D. not center C. Drilling D. Milling Answers: B Answer: A N.F. stands for: A. national file It is used to true and align machine tools B. national fine fixtures and works is at and inspect size C. neutral file trueness of finished work, and to compare D. not found measurements either heights or depths or many other measurements. Answer: B 3 The tool used in precision work to smooth or planer moves in rotary motion. enlarge holes is called a: A. round out Answer: C B. drift pin C. reamer Test sometimes referred to as upsetting test D. protractor called A. bend Answer: C B. crush C. flange Which of the following chisels would be used D. flaring for cutting oil grooves? A. diamond-point chisel Answer: A B. cold chisel C. round-nose chisel Valve stem packing is measured from thin: D. hot chisel A. O. D. of the valve stem to the bottom of the packing gland Answer: C B. Top of the packing gland to the bottom of the gland A mechanism, which usually does the indexing C. O. D. of the valve stem to the I. D. of the in a machine tool is called: packing box A. dividing head D. I. D. of the valve stem to the to the B. indexing bottom of the gland C. slotter D. universal chuck Answer: C Answer: A Tool used to cut threads on pipe is called a: A. pipe tool Recommended best cutting angle of drill for B. pipe stock work on steel or cast iron is ______ degrees C. pipe vise A. 48 D. pipe cutter B. 50 C. 59 Answer: B D. 63 The pipe fitting which has two opening and Answer: C provides a turn of 90 deg. Is called: A. an elbow What is the common shop practice to prevent B. a toe soldering from running away from surface to be C. a coupling joined? D. a union A. All of these B. Introduce around the work rolled wet cloth Answer: A C. Put asbestos sheeting around the work D. Surround the work with clay A plug cock offers: A. more resistance to flow than a globe valve Answer: A B. the same resistance to flow as a globe valve A machinery operation where by done with the C. less resistance to flow than a globe valve work accurately fastened has a reciprocating D. the same resistance to flow as a angle motion and the tool head is stationary is valve called: A. planning Answer: C B. reaming C. shaping The most common flux to use when soldering D. turning brass, copper or tin is: A. hallow Answer: A B. rosin C. borax What is the difference between the shaper and D. salt ammonia a planer? A. The shaper can perform slotting operation Answers: B while the planer cannot B. The shaper handles large pieces while the One turn of the screw on a micrometer moves planer handles only small pieces the spindle: C. The tool of the shaper moves while the A..25 planer is stationary B..205 D. The tool of the shaper moves in C..0205 reciprocating motion while the tool in the 4 D..2005 D. protracted Answer: C Answer B The process used to retard corrosion on iron A tap or die marked ¼-20 indicates: pipe is called: A. ¼ radius – 20 cm. long A. soldering B. ¼ radian – 20 threads per in. B. annealing C. ¼ diameter – 20 threads per in. C. tempering D. ¼ turn – 20 times D. galvanizing Answer: C Answer: D After a piece of piece of pipe has been cut, Which of the following tools does not belong the hole is cleaned out with a: to the group?. A. piper reamer A. Divides B. pipe cleaner B. Double VEE block C. pipe taper C. Caliper D. hole cleaner D. Trammel Answer: A Answer: B The tool used for cutting pipe threads is In machine shop had forging operation of called a: lengthening a piece of stock while reducing A. pipe cutter the cross-sectional area of work is called: B. pipe stock and die A. bloating C. pipe threader B. draining D. pipe ratcher cutter C. spreading D. upsetting Answer: B Answer: D The tool used when working with larger sizes Which of the following services is not of pipe is called a: considered to be a work of a machinist? A. chain pipe wrench A. grinding B. chain tongs B. Honing C. chain holder C. Overhauling D. A or B D. Reboring Answer: D Answer: C The tool used when preparing to put fittings Common defects encountered in the foundry shop on copper tubing is called a: steel A. tube spreader casting operation and also in welding B. flaring tool practices C. tube retarder A. Blow / pin holes D. tube countersink B. Cold shot C. Cracks Answer: B D. Parting line Which of the following is not a standard Answers: A thread form? A. Square Lathe operator to remove the taper shank from B. American national the taper hole drift. It is also called: C. Double Flute A. chuck taper D. 60 deg. Sharp V B. Morse taper C. tapered key Answer: C D. tong When turning a piece of round metal in a Answer: B lathe, the front clearance should be smaller for: Before drilling a hole in a piece of metal, It A. large-diameter cutting should be B. small-diameter cutting A. mark with chalk C. cutting angles B. center-punch D. none of the above C. scribed Answer: B 5 When cutting material in a lathe, the harder The flatness of surface can be checked the material being cut, the tool bit should A. by using straight edge have: B. by using surface plate A. more side rake C. by using dial test indicator B. less side rake D. all of the above C. more top rake D. no side rake Answer: D Answer: B A holding device which is used to hold or grip work piece, while filling, chipping or any Knurling is done to: other bench work or while machining or A. smooth material drilling them B. polish material A. clamp C. roughen material B. grid D. sharpen material C. pressed D. vise Answer: C Answer: D Removing the sharp edges from a piece of stock is reffered to as: A multi pointed hand anything tool used to A. knurling removed material from metallic and non- B. chamfering metallic work pieces to match with drawing, C. planning shape and size. D. turning A. Cold chisel B. File Answer: B C. Hacksaw D. Hammer Carbon steel drills should be operated at: A. speeds greater than that when using a high- Answer: B speed drill B. speeds less than that when using a high- A side-cutting tool used for accurately speed drill finishing the straight or tapered holes C. the same speed as that when using a high- already drilled or bored. speed drill A. Peering D. none of the above B. Reamer C. Swaging Answer: B D. Tapping When extreme outer corners of the cutting Answer: B edges of a drill was away too rapidly, it is an indication of: If the angle on a drill is less than 59 deg.: A. not enough speed A. the drill will make a large hole B. too much rake angle B. the drill will make a smaller hole C. too high speed C. the hole will take longer to drill and more D. B or C power is required to drive the drill D. the drill will not center properly Answer: D Answer: C It is an operation of stretching or spreading over the metal by means of the plane of the Soda added to water is used for cooling hammer. instead of plain water because: A. Bending A. it reduces the amount of heat generated B. Peening B. it improves the finish C. Swaging C. it overcome rusting D. Upsetting D. all of the above Answer: B Answer: D The good quality of a measuring tool If a drill speed is too great, it will: A. should be easy to handle A. cut faster B. should be easy to read B. lose its temper C. should be wear resistance C. cut slower D. all of the above D. not cut Answer: D Answer: B 6 The lip clearance of a drill should be A. Honing approximately: B. Lapping A. 20 deg. – 25 deg. C. Planing B. 5 deg. – 10 deg. D. Shaping C. 12 deg. – 15 deg. D. 15 deg. – 20 deg. Answer: A Answer: C It is device, which hold the job in position and guide the cutting tool. If the cutting edges of a drill are cut at A. clamp different angles: B. grip A. the drill will not cut C. jig B. the hole will be larger than the drill D. vise C. the hole will be smaller than the drill D. none of the above Answer: C Answer: B In referring to threads, “pitch” is: A. the distance of the full length of the The correct cutting angle on a drill for thread ordinary work is: B. the distance from a point on one thread to A. 45 deg. a corresponding point on the next thread B. 50 deg. measured parallel to the axis C. 59 deg. C. the distance from the top of one thread to D. 65 deg. the bottom of the next thread D. the distance from the bottom of a head on a Answer: C bolt to the first thread Which of the following gives greater hardness, Answer: B cutting toughness and dine grain structure? A. Chromium A tool bit for cutting an American National B. Nickel thread should be ground with a: C. Tungsten A. 45 deg. angle D. Vanadium B. 90 deg. angle C. 60 deg. angle Answer: A D. 30 deg. angle It is a process to impact maximum hardness to Answer: C the steel part. A. Annealing An approximate safe rule for cutting new B. Hardening piston rings for steam pumps is to make the C. Normalizing ring: D. Tempering A..002” between piston and cylindrical for each inch diameter of piston Answer: B B..001” between piston and cylinder for each inch diameter The size by which it is referred to as a C..010 between piston and cylinder for each matter of convenience called: inch diameter of piston A. actual size D..0001” between piston and cylinder for each B. basic size inch diameter of piston C. effective size D. nominal size Answer: B Answer: D An approximate safe rule for cutting new piston rings for steam pumps is to make the The relation between two mating parts with ring: reference to ease the assembly is called A. 1/32” larger in diameter per inch diameter A. allowance of cylinder B. clearance B. 1/16” larger in diameter than that of the C. tolerance cylinder D. fits C. 1/16” larger in diameter per inch diameter of cylinder Answer: D D..005” larger in diameter per inch diameter of cylinder It is an operation of finishing cylindrical surfaces to a fine degree of accuracy buy Answer: C means of abrasive sticks. 7 The gap clearance for new piston rings for C. key steam pumps should be approximately: D. reamer A..003” for each inch diameter of cylinder B..001” for each inch diameter of cylinder Answer: C C..010” for each inch diameter of cylinder D..050” for each inch diameter of cylinder A machine element inserted at right angle to the axis of shaft is known as Answer: A A. clamp What does 3/8 – 16 mean to you? B. cutter A. 16 pieces, 3/8 “ long C. fastener B. gear with 16 teeth and a 3/8” arbor D. key hole C. 3/8” square, 16” long Answer: B D. 3/8” diameter. 16 threads per inch The process of extracting iron in a blast Answer: D furnace is called A. casting When using a drill press the work should be B. manufacturing held with: C. smelting A. the hand D. sintering B. a gloved hand C. a vise or clamp Answer: C D. pliers Which of the following is a product of blast Answer: C furnace? A. cast iron Tapered shanks are used on large drfill B. gray iron presses so that: C. pig iron A. the drill can be centered more easily D. wrought iron B. the drill can be easily forced out of the sleeve with a drift Answer: C C. the shank will not turn when cutting D. the shank can be reground when worn A product of paddling furnace which contains less than 0.104 carbon, is called Answer: B A. cast iron B. gray cast iron Which of the following is not a common drill C. pig iron shank? D. wrought iron A. straight B. taper Answer: D C. fluted D. bit Which of the following is a property of wrought iron? Answer: C A. brittle B. can not be forged The cutting angle on a drill for drilling mild C. can be easily cast into different shapes steel should be: D. ductile A. 39 deg. B. 49 deg. Answer: D C. 59 deg. D. 69 deg. A piece of stock 8’’ long is 4” diameter on one end and 1” diameter on the other end. The Answer: C taper per foot is: A. 4” A device used to fix two or more parts. B. 4 -1/2” A. clamp C. 4 -1/4” B. fastener D. 4 -1/16” C. fixtures D. jigs Answer: B Answer: B A piece of stock 8” long is 3” diameter at ine end and 1 – ½” diameter at the other end. The A machine element inserted parallel to the taper per inch is: axis of a shaft. A. ½” A. cutter B. ¼” B. fastener C. 3/16” D. 5/16” 8  C. hollow punch Answer: C D. prick punch A piece of stock 6” long is 2” diameter at one Answer: B end and is cut with a taper of ½” to the foot. The diameter of the smaller end will be: Which of the following has its angle 90 and is A. 1 – ½’ used to give deep marks for the location of B. 1 – ¾’ drill? C. 1 - ¼’ A. center punch D. 2” B. dot punch C. hollow punch Answer: B D. prick punch If a piston ring is to be made 1/64” larger in Answer: A diameter per inch diameter of the cylinder which it is to fit, the required diameter for It is used on soft metals and non-metals for a piston ring to fit an 8” cylinder will be: making holes. A. 8 – ¼” A. center punch B. 8 - 1/8” B. dot punch C. 8 – 3/16” C. hollow punch D. 8 – 5/32” D. prick punch Answer: B Answer: C When cutting. A drill will “squeal” due to: Reason why cast iron selected for the A. drill being ground improperly manufacture of surface of surface plate B. drill being too hot A. it is cheaper C. insufficient lubrication B. it is easy for machinery D. any of the above C. it has less wear and tear D. all of the above Answer: D Answer: D “Center drilling” is the operation of: The common measuring tools are A. drilling a center in an odd-shaped piece of A. micrometer metal B. steel rule B. drilling and countersinking with one tool C. vernier caliper C. centering with one tool and drilling with D. all of the above another D. drilling a center in a piece of stock in a Answer: D drill press Which of the following is not a kind of Answer: B mandrel? The type and number of bearings to be used for A. contraction spindles of machine tool depend on B. expanded A. type of spindle C. extended B. type of machine tool D. taper C. load on the ring D. load on the bearing Answer: A Answer: D An act of cutting out a piece of metal at a desired shape and size is known as Which of the following has its angle 30 and is A. blanking used for dotting after marking the lines on B. broaching general works? C. dinking A. center punch D. slitting B. dot punch C. hollow punch Answer: A D. prick punch Safety features that must be placed and Answer: D maintained at machine, black smith welding and foundry shops called Which of the following has its angle 60 and is A. safety goggles used for dotting after marking the lines on B. safety notices general works? C. safety notices in markers / boards A. center punch D. walkway shops B. dot punch Answer: C 9  Before splicing electric wires, they should In cutting tool the cutting end can also be be: generally called A. tinned A. back rake B. cleaned and tinned B. end cutting edge C. soldered C. nose D. insulated D. side rake Answer: B Answers: C To check the speed of a motor or other rotary A machine shop equipment that can flatter machine, one wold horizontally, vertically or angular plane A. speed indicator called B. micrometer A. drill machine C. tachometer B. power saw D. A or C C. shaper machine D. welding machine Answer: D Answer: C It is the best instrument for measuring a thousandth of an inch Which of the following is an unsafe condition A. Caliper in operating a lathe machine? B. Micrometer A. operating with safety gloves C. Pyrometer B. wearing a canvass apron D. Tachometer C. wearing denim pants / safety shoes D. wearing safety goggles / hearing aid Answer: B Answer: B What tool will be used in making wood pattern in the foundry shop? The instrument used to remove old packing from A. Sand saw packing glands and stuffing boxes are called: B. Drill machine A. packing tools C. Hammer B. packing bits D. Saw and chisel C. gland box cleaners D. packing screws Answer: D Answer: A Machine tool used for laying straight lines on metal surfaces made of sharp tool steel is When working on bearing and checking for high called spots, it is customary to apply: A. divider A. white lead B. hermaphrodite caliper B. red lead C. plain scriber C. dykem blue D. trammel D. Prussian blue Answer: C Answer: D A lathe machine threading mechanism is called If you wanted to check the face of a pump A. anvil slide valve or other flat –face valve, you B. changed stud gear would check for trueness on a: C. reverse gear and lever A. flat board D. spindle gear B. surface plate C. piece of glass Answer: D D. bearing plate Which of the following is not used to resemble Answer: B the shape of tool bit? A. center cut To keep a metal clean while soldering, one B. round nose would use a: C. square nose A. flax D. thread cutting B. torch C. flux Answer: A D. insulated A lathe with multiple cutting stations called: Answer: C A. engine lathe B. manual lathe 10 C. semi-manual lathe C. flange D. turret lathe D. flaring Answer: D Answer: A Device used to measure accurately speed called Milling machine accessories are used to hold A. dial gage milling cutter in the milling machine called: B. dial indicator A. milling machine arbors C. speedometer B. milling machine size D. tachometer C. spindle – nose tooling D. vertical milling attachment Answer: D Answer: A A pipe wrench (Stilleon) is designed for use on: An important accessories of milling machine. A. hexagonal objects A. cutters B. round objects B. milling machine vise C. square objects C. ram D. flat objects D. vertical milling attachment Answer: B Answer: A Pipe is measured by: The machine, which can flatter surface on A. inside diameter horizontal, vertical or angular plane. B. outside diameter A. drilling machine C. thickness of wall B. lathe machine D. wire gage C. power saw D. shaper machine Answer: A Answer: D Tubing is measured by: A. inside diameter Which of the following is not part on a lathe B. outside diameter machine? C. thickness of wall A. carriage D. wire gage B.fan C. headstock Answer: B D. tail stock “Water Hammer” is caused by: Answer: B A. hitting water pipe with hammer B. too much water in pipe system Which tools does not belong to the group? C. water in steam line A. adjustable wrench D. steam in water line B. feeler gage C. torque wrench Answer: C D. vice grip Insulation is used on piping to: Answer: B A. held in heat B. held in cold The tool used to cut threads in a hole is C. cut down heat losses called a: D. steam in water line A. top B. tap Answer: C C. bit D. reamer It is a machine used for the testing of very thin steel or surface layers. Answer: B A. Charpy test B. Description test Hand taps are provided in sets of three C. Izod test called: D. Rockwell test A. taper, plug and end B. short, taper and bottom Answer: D C. taper, plug and bottom D. short, medium and long It is a test for pipe used for coiling in sizes 2 inches. Answer: C A. bend B. crush 11 Which of the following taps should be used to Answer: C start a thread? A. plug The usual value of helix angle of a drill is: B. short A. 30* C. bottom B. 60* D. taper C. 110* D. 120* Answer: D Answer: A When preparing to tap a hole, the size of the drill will be: The helix angle on a high-speed steel twist A. equal to the size of the tap drill for drilling cast iron if of the order B. larger than the size of the tap of C. smaller than the size of the tap A. 12-22 D. none of the above B. 24-32 C. 35-40 Answer: C D. 40-45 Pipe taps are: Answer: B A. the same size from end to end B. not fluted Wiping is the process of C. tapered D. not hardened A. applying flux during welding process B. cleaning the welded surface after the Answer: C welding operation is over C. connecting load pipes by soldering alloy When preparing to tap a hole for a pipe D. low temperature welding fitting the size of the drill will be: A. larger than the tap size Answer: C B. equal to the size of the tap C. smaller than the tap size Which of the following is not a cut of file? D. none of the above A. smooth B. second cut Answer: A C. half-round D. bastard A machine tool used to out metal parts a lift, medium and large section using a reciprocating Answers: C hacksaw blade. A. planer The tool used for cleaning files is called a: B.power saw A. file cleaner C. shaper B. file card D. tool grinder C. file oilstone D. scraper Answer: B Answer: B A cold chisel is made of A. cast iron Which of the following is the smallest size B.german silver drill? C. high carbon silver A. # 80 D. high speed steel B. # 60 C. # 1 Answer: C D. # 0 Trimming is a process associated with Answer: A A. electroplating B.forging Which of the following is the largest size C. machining of metals drill? D. press work A. A B. X Answer: B C. Z D. XX A twist drill is specified by A. its diameter and lip angle Answer: C B. it shank and diameter C. shank, material and diameter The size of drill is stamped on the: D. shank, material and flute size A. point B. shank 12 C. margin A machining operation whereby the tool D. flute reciprocates and the feed is stationary. A. Planing Answer: B B. Reaming C. Shaping Which of the following safety precautions D. Turning should be followed when pouring Babbitt? A. operator must wear goggles Answer: C B. the surface to be babbitted must be free of moisture The kind of center, which is being attached C. the surface to be babbitted must be clean and meshed to he tailstock spindle, which is D. all of the above also static while the work, is rotating is know as: Answer: D A. dead center B. focal center Which of the following safety precaution C. live center should be followed when renewing a flange D. work center gasket? A. drain the line thoroughly Answer: A B. isolate the section to be worked on C. tie down isolation valves A machine tool in which an abrasive wheel is D. all of the above used as a cutting tool to obtain a very smooth finish. Answer: D A. Broaching machine B. Milling Machine Brazing requires: C. Planer A. hard solder D. Tool Grinder B. soft solder C. more heat Answer: D D. A and C A machine too used principally to machine flat Answer: D or plane surfaces with a single pointed tool. A. Drill Lead is used in solder because: B. Planer A. it has a high melting point C. Power Saw B. it has a low melting point D. Shaper C. it is cheap D. B and C Answer: D Answer: D A tool with hardened steel point used for scribing or laying of distances. The name of the taper shank used on drills is: A. Divider A. Miller B. Hermaphrodite B. Morse C. Plain scriber C. Starret D. Trammel D. Stanley Answer: A Answer: B The cylinder of piston type steam engine are The higher the melting point of the solder, counterbored to: the: A. give a larger head clearance A. weaker the solder joint B. prevent piston rings from wearing a groove B. softer the solder joint in the cylinder at the end of the stroke C. stronger the solder joint C. give a larger volumetric clearance D. harder the solder joint D. prevent piston rings from slipping on the piston Answer: C Answer: B Which of the following is not part of the headstock? When installing packing in a packing box: A. Anvil A. leave one old turn at the bottom of the B. Back pressure packing box C. Motor B. remove one turn and install one new turn of D. Spindle packing C. leave sufficient end clearance on each turn Answer: A to allow for expansion 13 D. place and cuts directly in line with each C. radius of curvature other D. thickness of plates Answer: C Answer: A An instrument consisting of a wet – and dry – bulb thermometer (used in air conditioning) is called a: A. hygrometer B. pyrometer C. psychrometer D. A or C Answer: D Sheet metal of # 18 gage is heavier than: A. 12 gage B. 14 gage C. 22 gage D. 16 gage Answer: C Shims are used to: A. separate fresh – and salt – water lines B. replace fuses C. adjust cylinder liners D. adjust bearing clearances Answer: D Quick return motion is used in a A. drilling machine B. grinder C. lathe D. shaper Answer: D The operation of enlarging a hole is called A. boring B. counter sinking C. drilling D. reaming Answer: A In up cut milling the work piece is fed A. against the rotating cutter B. at an angle of 60* to the cutter C. at right angle to the cutter D. in the direction of the cutter Answer: A Rapping allowance is provided on a patter to take care of A. distortion B. easy withdrawal C. machining D. shrinkage Answer: B Feeler gage are used for measuring the A. clearance between mating parts B. pitch of screw threads 14