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Theory of Machine

Theory of Machine
In a pantograph, all the pairs are

Self-closed pairs
Sliding pairs
Spherical pairs
Turning pairs

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Theory of Machine
In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set to

Reduce vibration
Ensure proper alignment
Reduce slip
Ensure uniform loading

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Theory of Machine
In order to balance the reciprocating masses,

Primary forces and couples must be balanced
None of these
Secondary forces and couples must be balanced
Both (A) and (B)

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

None of these
More than
Less than
Same as

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Theory of Machine
In a rigid link OA, velocity of 'A' w.r.t. 'O' will be

Parallel to OA
Along AO
At 45° to OA
Perpendicular to OA

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Theory of Machine
Frequency of vibrations is usually expressed in

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

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