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Theory of Machine

Theory of Machine
If ω/ωn is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

0°
360°
180°
90°

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Theory of Machine
A mechanism is an assemblage of

Four or more than four links
Three links
All of these
Two links

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Theory of Machine
The motion between a pair which takes place in ____ is known as incompletely constrained motion.

One direction only
More than one direction
Two directions only
None of the listed here

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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 the equation are __________ then the system will be under damped.

None of these
Complex conjugate
Real
Equal

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Theory of Machine
In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient.

Directly proportional to
Independent of
Equal to
Inversely proportional to

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Theory of Machine
When the sleeve of a Porter governor moves downwards, the governor speed

First increases and then decreases
Increases
Decreases
Remain unaffected

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