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Theory of Machine

Theory of Machine
With usual notations for different parameters involved, the maximum fluctuations of energy for a flywheel is given by

2E²CS
2ECS²
EC S/2
2ECS

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Theory of Machine
A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to

I₂/G
I₂/G²
G².I₂
G.I₂

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Theory of Machine
The acceleration of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by

ω² r₁ sinθ
ω² (R - r₁) cosθ
ω² (R - r₁) sinθ
ω² R cosθ

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

Inertia
Torque
Moment of momentum
Momentum

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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
A spring controlled governor is found unstable. It can be made stable by

Decreasing the spring stiffness
Increasing the spring stiffness
Decreasing the ball mass
Increasing the ball mass

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