Question 11 : For unequal width of butt straps, the thickness of butt straps are
1. 0.75 t for both the straps on the inside and outside
2. 0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside
3. 0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside
4. 0.625 t for both the straps on the inside and outside
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Question 12 : According to Indian standard specifications, 100 H6/g5 means that the
1. actual size is 100 mm
2. basic size is 100 mm
3. none of the above
4. difference between the actual size and basic size is 100 mm
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Question 13 : A screw is said to be over hauling screw, if its efficiency is
1. less than 50%
2. more than 50%
3. none of these
4. equal to 50%
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Question 14 : Screws used for power transmission should have
1. Sow efficiency
2. very fine threads
3. strong teeth
4. high efficiency
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Question 15 : A locking device in which the bottom cylindrical portion is recessed to receive the tip of the locking set screw, is called
1. jam nut
2. sawn nut
3. castle nut
4. ring nut
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Question 16 : Slenderness ratio is the ratio of
1. a pair of tongs
2. handle of a hand pump
3. lever of a loaded safety valve
4. hand wheel of a punching press
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Question 17 : The application of third type levers is found in
1. a pair of tongs
2. handle of a hand pump
3. lever of a loaded safety valve
4. hand wheel of a punching press
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Question 18 : The number of slots in a 25 mm castle nut is
1. 8
2. 4
3. 6
4. 2
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Question 19 : When bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and one of the bevel gears has a pitch angle of 90°, then they are known as
1. angular bevel gears
2. crown bevel gears
3. internal bevel gears
4. mitre gears
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Question 20 : The sleeve or muff coupling is designed as a
1. solid shaft
2. dun cylinder
3. thick cylinder
4. hollow shaft
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