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Theory of Machine

Theory of Machine
A point on a link connecting double slider crank chain traces a

Circle
Ellipse
Parabola
Hyperbola

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

Greater than
None of these
Equal to
Less than

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Theory of Machine
Which of the following is a turning pair?

Piston and cylinder of a reciprocating steam engine
Shaft with collars at both ends fitted into a circular hole
Lead screw of a lathe with nut
Ball and a socket joint

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Theory of Machine
A flywheel is fitted to the crankshaft of an engine having W as the amount of indicated work per revolution and permissible limits of coefficient of fluctuation of energy and speed as CE and CS respectively. The kinetic energy of the flywheel is given by

W CE / 2CS
W CS / 2CE
2 W CE / CS
W CE / CS

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Theory of Machine
For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that

Both governors A and B are equally sensitive
Governor A is more sensitive than governor B
Governor B is more sensitive than governor A
None of these

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Theory of Machine
In a screw jack, the effort required to lower the load W is given by

P = W tan(φ - α)
P = W tan(α + φ)
P = W tan(α - φ)
P = W cos(α + φ)

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