Mechanical Engineering - Machine Design

31.
A screw is said to be a self locking screw, if its efficiency is
less than 50 %
more than 50%
equal to 50%
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.
An aluminium member is designed on the basis of
yield stress
elastic limit stress
proof stress
ultimate stress
Answer: Option
Explanation:
No answer description is available. Let's discuss.

33.
A plate with a circular hole in the centre is subjected to a pull of P. The maximum stress induced at the edge of the hole is three times of the nominal stress.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.

34.
The cold working of metals is carried out __________ the recrystallisation temperature.
above
below
Answer: Option
Explanation:
No answer description is available. Let's discuss.

35.
The groove angle of the pulley for rope drive is usually
20°
35°
45°
60°
Answer: Option
Explanation:
No answer description is available. Let's discuss.