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Theory of Machine

Theory of Machine
Which of the following is an open pair?

Ball and socket joint
Cam and follower
Journal bearing
Lead screw and nut

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Theory of Machine
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A)

v²BA
v²BA /AB
vBA × AB
vBA /AB

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Theory of Machine
The pressure angle of a cam depends upon

Angle of ascent
Lift of follower
All of these
Offset between center lines of cam and follower

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Theory of Machine
The sensitiveness of the governor _____ as the speed range decreases.

Decreases
Increases
Remains unaffected
None of the listed here

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Theory of Machine
Frequency of vibrations is usually expressed in

Number of cycles per second
None of these
Number of cycles per hour
Number of cycles per minute

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Theory of Machine
The Ackermann steering mechanism is preferred to the Davis type in automobiles because

The former is most rigid
The former is most economical
The former is having turning pair
The former is mathematically accurate

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