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Theory of Machine

Theory of Machine
A pulley and belt in a belt drive form a

Sliding pair
Cylindrical pair
Turning pair
Rolling pair

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Theory of Machine
The ratio of height of Porter governor (when length of arms and links are equal) to the height of Watt's governor is (where m = Mass of the ball, and M = Mass on the sleeve)

(m + M)/M
M/(m + M)
m/(m + M)
(m + M)/m

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Theory of Machine
The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain, is known as

Machine
Inversion
Compound mechanism
Structure

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Theory of Machine
A mass of 1 kg is attached to the end of a spring with a stiffness of 0.7 N/mm. The critical damping coefficient of this system is

1.4 N-s/m
529.2 N-s/m
52.92 N-s/m
18.52 N-s/m

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Theory of Machine
The Bifilar suspension method is used to determine

Centripetal acceleration
Moment of inertia
Position of balancing weights
Natural frequency of vibration

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

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

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