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THEORY OF MACHINE

Theory of Machine
The example of successfully constrained motion is a

Motion of an I.C. engine valve
Piston reciprocating inside an engine cylinder
Motion of the shaft between a footstep bearing
All of these

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Theory of Machine
In considering friction of a V-thread, the virtual coefficient of friction (μ₁) is given by

μ₁ = μ cos β
μ₁ = μ/cos β
μ₁ = μ/sin β
μ₁ = μ sin β

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Theory of Machine
The lower pairs are _________ pairs.

Self-closed
None of these
Friction closed
Force-closed

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Theory of Machine
In a coupling rod of a locomotive, each of the four pairs is a ________ pair.

Screw
Rolling
Sliding
Turning

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Theory of Machine
A kinematic chain is known as a mechanism when

One of the links is fixed
None of these
None of the links is fixed
Two of the links are fixed

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