Mechanical Engineering - Theory of machines

1. 

The maximum or minimum value of the swaying couple is

A. ± c.m2.r
B. ± a(1 - c)m2.r
C. ± (1 - c)m2.r
D. ± 2a(1 - c)m2.r

Answer: Option C

Explanation:

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2. 

For an involute gear, the ratio of base circle radius and pitch circle radius is equal to

A. sin φ
B. cos φ
C. sec φ
D. cosec φ

Answer: Option B

Explanation:

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3. 

A chain consisting of four links and four joints is called a kinematic chain.

A. Yes
B. No

Answer: Option A

Explanation:

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4. 

Which of the following is an open pair?

A. Ball and socket joint
B. Journal bearing
C. Lead screw and nut
D. Cam and follower

Answer: Option D

Explanation:

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5. 

The frictional torque transmitted in a flat pivot bearing with assumption of uniform pressure is __________ as compared to uniform wear.

A. less
B. more
C. same

Answer: Option B

Explanation:

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