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1) Spring index is___________________? a. ratio of coil diameter to wire diameter b. load required to produce unit deflection c. its capability of storing energy d. indication of quality of spring e. nothing
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2) The piston rod of a steam engine is usually connected to the cross head by means of__________________? a. bolted joint b. kunckle joint c. cotter joint d. universal joint e. universal coupling
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3) Gear box is used___________________? a. to produce torque b. for speed reduction c. to obtain variable speeds d. to increase efficiency of system e. to damp out vibrations
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4) Castle nut is a locking device in which__________________? a. one smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming b. a slot is cut partly is middle of nut and then slot reduced by tightening a screw c. a hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip d. through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin spitted and bent in reverse direction at e. none of the above.
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5) A backing ring is used inside the pipe joint when making a___________________? a. butt weld b. fillet weld c. sleeve weld d. socket weld e. tube weld
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6) A tube has the following advantage over pipe_________________? a. lighter and easier to handle b. greater shock absorption c. smoother inside walls d. all of the above e. none of the above
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7) For tight leakage joints, following type of thread is best suited ____________________? a. metric b. buttress c. square d. acme e. NPT (national pipe threads)
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8) The function of cutting oil when threading a pipe is to___________________? a. provide cooling action b. lubricate the dies c. help remove chips d. all of the above e. none of the above
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9) Split nut is a locking device in which_________________? a. one smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming b. a slot is cut partly in middle of nut and then slot reduced by tightening screw c. a hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip d. through slots are made at top and a cotter-pin is passed through these and a hole in the bolt, and cotter pin splitted and bent in reverse direction a e. none of the above
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10) A bench vice has following type of threads____________________? a. metric b. square c. buttress d. acme e. BSW
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11) Applications in which stresses are encountered in one direction only uses following type of threads____________________? a. metric b. buttress c. acme d. square e. BSW
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12) If threads on a bolt are left hand, threads on nut will be_____________________? a. right hand with same pitch b. left hand with same pitch c. could be left or right hand d. right hand with fine pitch e. left hand with fine pitch
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13) Elastic nut is a locking device in which__________________? a. one small nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming b. a slot is cut partly in middle of nut and then slot reduced by tightening a screw c. hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is stewed on the bolt causing a tight grip d. through slots are made at top and a cotter-pin is passed through these and a hole in the bolt, and cotter pin splitted and bent in reverse direction a e. none of the above
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14) Turn buckle has____________________? a. right hand threads on bout ends b. left hand threads on both ends c. left hand threads on one end and right hand threads on other end d. no threads e. threads in middle portion
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15) A tapered key which fits in a keyway in the hub and is flat on the shaft, is known as___________________? a. wood-ruff key b. feather key c. flat saddle key d. gib head key e. hollow saddle key
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16) A key capable of tilting in a recess milled out in a shaft is known as______________________? a. wood-ruff key b. feather key c. flat saddle key d. gib head key e. hollow saddle key
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17) Buttress threads are usually found on____________________? a. screw cutting lathes b. feed mechanisms c. spindles of bench vices d. screw jack e. railway carriage couplings
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18) Jam nut is a locking device in which _____________________? a. one smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming b. a slot is cut partly in middle of nut and then slot reduced by tightening a screw c. a hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip d. through slots are made at top and a cotter-pin is passed through these and a hole in the bolt, and cotter spitted and bent in reverse direction at oth e. none of the above
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19) If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to___________________? a. 0.2 b. 0.25 c. 0.50 d. 0.6 e. 0.75
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20) Which of the following is a permanent fastening ? a. bolts b. keys c. cotters d. rivets e. screws
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21) Rivets are generally specified by_______________? a. thickness of plates to be riveted b. length of rivet c. diameter of head d. nominal diameter e. all of the above
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22) The designation M 33 x 2 of a bolt means___________________? a. metric threads of 33 nos in 2 cm. b. metric threads with cross-section of 33 mm c. metric threads of 33 mm outside diameter and 2 mm pitch d. bolt of 33 mm nominal diameter having 2 threads per cm e. none of the above
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