Exercise: Machine Design

Questions for: Machine Design

A screw is said to be over hauling screw, if its efficiency is
A:
less than 50%
B:
more than 50%
C:
equal to 50%
D:
none of these
Answer: B
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The number of slots in a 25 mm castle nut is
A:
2
B:
4
C:
6
D:
8
Answer: C
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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
A:
angular bevel gears
B:
crown bevel gears
C:
internal bevel gears
D:
mitre gears
Answer: B
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The number of rivets in shear shall be equal to the number of rivets in crushing.
A:
Correct
B:
Incorrect
C:
D:
Answer: A
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Screws used for power transmission should have
A:
Low efficiency
B:
high efficiency
C:
very fine threads
D:
strong teeth
Answer: B
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