Fundamentals of Machine Design (3141907) MCQs

MCQs of Shafts and Keys

Showing 1 to 10 out of 35 Questions
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1.
Which property is not required for shaft materials?
(a) High shear and tensile strength
(b) Good machinability
(c) High fatigue strength
(d) Good castability
Answer:

Option (d)

2.
When a solid shaft is subjected to a torsion, the shear stress induced in the shaft at its center is
(a) minimum
(b) zero
(c) maximum
(d) average
Answer:

Option (b)

3.
The design of shafts made of brittle materials is based on
(a) Guest's theory
(b) Rankine's theory
(c) St Venant's theory
(d) VonMises theory
Answer:

Option (b)

4.
When a shaft is subjected to a twisting moment, every cross-section of the shaft will be under
(a) tensile stress
(b) compressive stress
(c) shear stress
(d) bending stress
Answer:

Option (c)

5.
The product of the tangential force acting on the shaft and its distance from the axis of the shaft (i.e. the radius of the shaft) is known as
(a) bending moment
(b) twisting moment
(c) torsional rigidity
(d) flexural rigidity
Answer:

Option (b)

6.
A shaft is designed on the basis of rigidity and stiffness.
(a) Correct
(b) Incorrect
Answer:

Option (a)

7.
The standard length of the shaft is
(a) 5 m
(b) 6 m
(c) 7 m
(d) all of these
Answer:

Option (d)

8.
In power transmission equation, P=2πNT60×1000
(a) P is in kw and T is the maximum torque
(b) P is in NM/sec and T is the maximum torque
(c) P is in NM/sec and T is mean torque
(d) P is in kw and T is mean torque
Answer:

Option (d)

9.
A shaft revolving at ω rad / s transmits torque (T) in N-m. The power developed is
(a) T.ω watts
(b) 2πTω watts
(c) 2πTω75 watts
(d) 2πTω4500 watts
Answer:

Option (a)

10.
When the shaft is subjected to pure bending moment, the bending stress is given by?
(a) 32Mπd3
(b) 16Mπd3
(c) 8Mπd3
(d) None of the listed
Answer:

Option (a)

Showing 1 to 10 out of 35 Questions
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