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Theory of Machine

Theory of Machine
The lower pairs are _________ pairs.

None of these
Self-closed
Force-closed
Friction closed

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Theory of Machine
The equation of motion for a vibrating system with viscous damping is (d²x/dt²) + (c/m). (dx/dt) + (s/m). x = 0. If the roots of this equation are real, then the system will be

Over-damped
Under damped
Without vibrations
Critically damped

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Theory of Machine
The transmissibility, for all values of damping factor, will be less than unity, if ω/ωn is

Equal to 2
Less than 2
Equal to 1
Greater than 2

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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
None of these
Four times

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Theory of Machine
The amplitude of vibration is always __________ the radius of the circle.

Equal to
None of these
Greater than
Less than

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Theory of Machine
Which of the following is an inversion of a double slider crank chain?

Scotch yoke mechanism
Elliptical trammel
All of these
Oldham's coupling

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