Theory of Machine Objective Questions

1. For high-speed engines, the cam follower should move with-

A. uniform acceleration and retardation

B. simple harmonic motion

C. cycloidal motion

D. uniform velocity

2. The gears are termed as medium velocity gears if their peripheral velocity is –

A. 1 – 3 m/s

B. 3 – 15 m/s

C. 15 – 30 m/s

D. 30 – 50 m/s

3. The frequency of damped vibrations with viscous damping is ________ the frequency of undamped vibrations.

A. less than

B. more than

C. equal to

D. Can’t say

4. The Whit-worth quick return motion mechanism is formed in a slider crank chain when the –

A. slider is a fixed link

B. longest link is a fixed link

C. smallest link is a fixed link

D. coupler link is fixed

5. In order to balance the reciprocating masses –

A. primary forces and couples must be balanced

B. secondary forces and couples must be balanced

C. Both (A) and (B)

D. None of these