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Theory of Machine

Theory of Machine
Which of the following is a higher pair?

Sliding pair
Turning pair
Belt and pulley
Screw pair

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Theory of Machine
Which of the following has sliding motion?

Crank pin
Crank
Cross-head
Connecting rod

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Theory of Machine
In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to

0.6
0.2
0.4
0.8

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Theory of Machine
When the body is suspended at the point of suspension, its periodic time and frequency will be ________ as compared to the body suspended at the point of percussion.

Two times
Same
Four times
None of these

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Theory of Machine
The centre of gravity of a coupler link in a four bar mechanism will experience

Only linear acceleration
Both linear and angular acceleration
Only angular acceleration
No acceleration

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Theory of Machine
When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be

To raise the bow and lower the stern
To move the ship towards starboard
To raise the stern and lower the bow
To move the ship towards port side

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