Machine Design MCQ with Answers

126) When two helical springs of equal lengths are arranged to form a cluster spring, then

Answer is:

all of the above

Explanation:

When two helical springs of equal lengths are arranged to form a cluster spring, then
* shear stress in each spring will be equal
* load taken by each spring will be half the total load

127) For a shaft diameter of 200 mm, the number of bolts in a marine flange coupling should be

Answer is:

8

128) The stress in the threaded part of the bolt will be __________ as compared to the shank.

Answer is:

higher

129) A shaft is a rotating machine element.

Answer is:

Correct

130) The dedendum circle diameter is equal to (where ? = Pressure angle)

Answer is:

126) When two helical springs of equal lengths are arranged to form a cluster spring, then

all of the above

127) For a shaft diameter of 200 mm, the number of bolts in a marine flange coupling should be

8

128) The stress in the threaded part of the bolt will be __________ as compared to the shank.

higher

129) A shaft is a rotating machine element.

Correct

130) The dedendum circle diameter is equal to (where ? = Pressure angle)

pitch circle diameter x cos ?