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
View Answer
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
View Answer
Answer: a
Explanation: That is axle and not a spindle.
3 - Question
Axle is frequently used in torque transmission.
a) True
b) False
View Answer
Answer: b
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
View Answer
Answer: c
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
View Answer
Answer: a
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
View Answer
Answer: b
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
View Answer
Answer: b
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
View Answer
Answer: c
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
View Answer
Answer: b
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
View Answer
Answer: c
Explanation: Stress=Mr/J where r=d/2 and J=πd⁴/64.