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Theory of Machine

Theory of Machine
Rectilinear motion of piston is converted into rotary by

Connecting rod
Gudgeon pin
Slider crank
Cross head

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Theory of Machine
In under damped vibrating system, the amplitude of vibration

Decreases linearly with time
Increases exponentially with time
Increases linearly with time
Decreases exponentially with time

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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

Critical damping ratio
Logarithmic decrement
Magnification factor
Damping factor

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Theory of Machine
Efficiency of a screw jack is given by

tan (α + φ)/tanα
tanα/tan (α - φ)
tan (α - φ)/tanα
tanα/tan (α +φ)

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Theory of Machine
Which of the following is a spring controlled governor?

Wilson-Hartnell governor
Hartung governor
All of these
Hartnell governor

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Theory of Machine
The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap.

Corners
Inner edge
None of these
Outer edge

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