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Theory of Machine

Theory of Machine
The locus of a point on a thread unwound from a cylinder will be

Cycloidal
A straight line
Involute
A circle

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Theory of Machine
The motion of a shaft in a circular hole is an example of

Incompletely constrained motion
None of these
Completely constrained motion
Successfully constrained motion

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Theory of Machine
In a pantograph, all the pairs are

Spherical pairs
Sliding pairs
Self-closed pairs
Turning pairs

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Theory of Machine
In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from

25°-30°
30°-40°
10°-15°
15°-25°

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Theory of Machine
What is the number of instantaneous centers for an eight link mechanism?

28
30
8
15

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

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