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Theory of Machine

Theory of Machine
Which of the following is a pendulum type governor?

None of these
Hartnell governor
Porter governor
Watt governor

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Theory of Machine
The Grubler's criterion for determining the degrees of freedom (n) of a mechanism having plane motion is (where l = Number of links, and j = Number of binary joints)

n = 4(l - 1) - 3j
n = 3(l - 1) - 2j
n = 2(l - 1) - 2j
n = (l -1) - j

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Theory of Machine
In a coupling rod of a locomotive, each of the four pairs is a ________ pair.

Turning
Screw
Rolling
Sliding

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Theory of Machine
The instantaneous center of a rigid thin disc rolling on a plane rigid surface is located at

The point on the circumference situated vertically opposite to the contact point
The point of contact
The center of the disc
An infinite distance on the plane surface

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Theory of Machine
The minimum force required to slide a body of weight W on a rough horizontal plane is

W sinθ
W tanθ
W cosθ
W cosecθ

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Theory of Machine
In vibration isolation system, the transmissibility will be equal to unity, for all values of damping factor, if ω/ωn is

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

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