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Theory of Machine

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

W cosθ
W cosecθ
W tanθ
W sinθ

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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

Knuckle joint
Universal joint
Flexible coupling
Oldham's coupling

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Theory of Machine
The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be

To raise the bow and stern
To raise the bow and lower the stern
To lower the bow and stern
To raise the stern and lower the bow

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Theory of Machine
The indicator using Watt mechanism is known as

Richard indicator
Thomson indicator
Simplex indicator
Thompson indicator

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Theory of Machine
Critical damping is a function of

Mass and damping coefficient
Damping coefficient and natural frequency
Mass and stiffness
Mass and natural frequency

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Theory of Machine
Length of arc of contact is given by

Arc of approach + Arc of recess
Arc of approach / Arc of recess
Arc of approach × Arc of recess
Arc of approach - Arc of recess

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