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Theory of Machine

Theory of Machine
The type of gears used to connect two non parallel and non intersecting shafts is

Helical gear
Bevel gear
Spur gear
Spiral gear

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Theory of Machine
When a slider moves on a fixed link having curved surface, their instantaneous centre lies

On their point of contact
At the centre of circle
At the centre of curvature
At the pin joint

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Theory of Machine
A Porter governor is a

Pendulum type governor
Spring loaded governor
Inertia governor
Dead weight governor

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Theory of Machine
In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring)

(S₁ - S₂) / 2h
(S₁ + S₂) / 2h
(S₁ + S₂) / h
(S₁ - S₂) / h

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Theory of Machine
When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be

To move the ship towards starboard
To raise the bow and lower the stern
To move the ship towards port side
To raise the stern and lower the bow

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Theory of Machine
A cam mechanism imparts following motion

Rotating
Reciprocating
All of these
Oscillating

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