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Theory of Machine

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

0°
360°
90°
180°

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Theory of Machine
Oldham’s coupling is an inversion of the kinematic chain used in

Elliptical trammels
Whitworth quick return mechanism
Universal joint
Rotary engine

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Theory of Machine
Which of the following governor is used to drive a gramophone?

Watt governor
Pickering governor
Porter governor
Hartnell governor

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Theory of Machine
In its simplest form, a cam mechanism consists of following number of links

2
4
3
1

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Theory of Machine
The working depth of a gear is the radial distance from the

Pitch circle to the top of a tooth
Addendum circle to the clearance circle
Top of a tooth to the bottom of a tooth
Pitch circle to the bottom of a tooth

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Theory of Machine
In higher pair, the relative motion is

Purely turning
Combination of sliding and turning
Purely rotary
Purely sliding

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