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Theory of Machine

Theory of Machine
The relation between number of pairs (p) forming a kinematic chain and the number of links (l) is

l = 2p - 5
l = 2p - 4
l = 2p - 3
l = 2p - 2

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Theory of Machine
The locus of a point on a thread unwound from a cylinder will be

Involute
A circle
A straight line
Cycloidal

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Theory of Machine
In a disc clutch, if there are n₁ number of discs on the driving shaft and n₂ number of discs on the driven shaft, then the number of pairs of contact surfaces will be

n₁ + n₂ + 1
n₁ + n₂ - 1
n₁ + n₂
n₁ + n₂ - 2

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

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Theory of Machine
It is required to connect two parallel shafts, the distance between whose axes is small and variable. The shafts are coupled by

Universal joint
Knuckle joint
Oldham's coupling
Flexible coupling

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Theory of Machine
For the same lift and same angle of ascent, a smaller base circle will give

A small value of pressure angle
There is no such relation with pressure angle
Something else
A large value of pressure angle

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