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Theory of Machine

Theory of Machine
In a Hartnell governor, the compression of the spring is __________ the lift of the sleeve.

None of these
Greater than
Less than
Equal to

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Theory of Machine
The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by (where OQ = Distance between the centre of circular flank and centre of nose)

ω² × OQ sinθ
ω² × OQ tanθ
ω² × OQ cosθ
ω² × OQ

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Theory of Machine
The moment on the pulley which produces rotation is called

Momentum
Inertia
Torque
Moment of momentum

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Theory of Machine
When the crank is at the inner dead center, in a reciprocating steam engine, then the acceleration of the piston will be

ω²r. n/(n + 1)
ω²r. n/(n - 1)
ω²r. (n - 1)/n
ω²r. (n + 1)/n

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Theory of Machine
The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is

At 45° to PO
Along PO
Perpendicular to PO
None of the listed here

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Theory of Machine
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A)

v²BA /AB
vBA × AB
vBA /AB
v²BA

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