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Theory of Machine

Theory of Machine
Cylindrical cams can be classified as

Circular
None of these
Tangent
Reciprocating

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

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

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Theory of Machine
When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.

Upward
Downward
Forward
Backward

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Theory of Machine
The minimum periodic time of a compound pendulum is

(1/2π). √(2kG/g)
2π. √(2kG/g)
2π. √(kG/g)
(1/2π). √(kG/g)

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Theory of Machine
The ratio of the driving tensions for V-belts is __________ times that of flat belts.(Where β = Semi-angle of the groove)

cosecβ
cosβ
sinβ
secβ

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Theory of Machine
A machine mounted on a single coil spring has a period of free vibration of tp . If the spring is cut into four equal parts and placed in parallel and the machine is mounted on them, then the period of free vibration of the new system will become

4 tp
16 tp
tp /4
tp /16

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