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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°
180°
360°
90°

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Theory of Machine
The ratio of maximum fluctuation of speed to the mean speed is called

Maximum fluctuation of speed
None of these
Fluctuation of speed
Coefficient of fluctuation of speed

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Theory of Machine
Which one of the following is an exact straight line mechanism using lower pairs?

Watt’s mechanism
Robert’s mechanism
Grasshopper mechanism
Peaucellier’s mechanism

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Theory of Machine
Which of the following has sliding motion?

Cross-head
Connecting rod
Crank pin
Crank

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Theory of Machine
In a system subjected to damped forced vibrations, the ratio of maximum displacement to the static deflection is known as

Damping factor
Magnification factor
Critical damping ratio
Logarithmic decrement

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Theory of Machine
Coriolis component acts

Perpendicular to sliding surfaces
Somewhere in between above two
Along sliding surfaces
None of these

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