# MCQs on Transmission Shafts

1 - Question

The shaft is always stepped with ________ diameter at the middle portion and __________ diameter at the shaft ends.

a) Minimum, maximum
b) Maximum, minimum
c) Minimum, minimum
d) Zero, infinity

2 - Question

______ is used for a shaft that supports rotating elements like wheels, drums or rope sleaves.

a) Spindle
b) Axle
c) Shaf
d) None of the listed

Explanation: That is axle and not a spindle.

3 - Question

Axle is frequently used in torque transmission.

a) True
b) False

Explanation: Axle is a shaft supporting rotating elements.

4 - Question

Is it necessary for an axle to be ______ with respect to rotating element?

a) Stationary
b) Moving
c) Moving or stationary
d) None of the listed

Explanation: The axle may be stationary or rotate with the element.

5 - Question

Counter shaft is a secondary shaft.

a) True
b) False
a) True
b) False

Explanation: It is a secondary shaft used to counter the direction of main shaft.

6 - Question

Hot rolling produces a stronger shaft then cold rolling.

a) True
b) False

Explanation: Cold rolling produces stronger shaft as grain structure isn’t deformed in cold working.

7 - Question

Shafts are subjected to ______ forces.

a) Compressive
b) Tensile
c) Shear
d) None of the listed

Explanation: Shafts are subjected to tensile forces.

8 - Question

Which of the following act on shafts?

a) Torsional moment
b) Bending Moment
c) Both torsional and bending
d) None of the mentioned

Explanation: Shaft is subjected to torsional moment as well as bending moment.

9 - Question

When the shaft is subjected to pure bending moment, the bending stress is given by?

a) None of the listed
b) 32M/πdᵌ
c) 16M/πdᵌ
d) 8M/πdᵌ

Explanation: Stress =My/I where y=d/2 and I=πd⁴/64.

10 - Question

When the shaft is subjected to pure torsional moment, the torsional stress is given by?

a) None of the listed
b) 32M/πdᵌ
c) 16M/πdᵌ
d) 8M/πdᵌ