Machine Design MCQ with Answers

186) Which one of the following loading is considered for the design of axles?

Answer is:

Bending moment only

187) The shear stress in a beam varies from zero at the outer fibres to a maximum at the neutral surface.

Answer is:

Yes

188) A basic hole is one whose

Answer is:

lower deviation is zero

Explanation:

A basic hole is one whose Lower deviation is zero
Upper Deviation: It is the algebraic difference between the maximum size and the basic size. The upper deviation of a hole is represented by a symbol ES and of a shaft, it is represented by es.
Lower Deviation: It is the algebraic difference between the minimum size and the basic size.

189) In a flange coupling, the keys are staggered at __________ along the circumference of the shafts in order to divide the weakening effect caused by key ways.

Answer is:

90 Degree

190) A tapered key which fits in a key way in the hub and the bottom of which is shaped to fit the curved surface of the shaft, is known as hollow saddle key.

Answer is:

186) Which one of the following loading is considered for the design of axles?

Bending moment only

187) The shear stress in a beam varies from zero at the outer fibres to a maximum at the neutral surface.

Yes

188) A basic hole is one whose

lower deviation is zero

189) In a flange coupling, the keys are staggered at __________ along the circumference of the shafts in order to divide the weakening effect caused by key ways.

90 Degree

190) A tapered key which fits in a key way in the hub and the bottom of which is shaped to fit the curved surface of the shaft, is known as hollow saddle key.

Correct