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Theory of Machine

Theory of Machine
The Hooke's joint consists of:

Three forks
Four forks
Two forks
One fork

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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
n₁ + n₂ - 1
n₁ + n₂ + 1
n₁ + n₂ - 2

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Theory of Machine
The power of a Porter governor is equal to

[2c²/(1 + 2c)] (m + M) g.h
[4c²/(1 + 2c)] (m + M) g.h
[c²/(1 + 2c)] (m + M) g.h
[3c²/(1 + 2c)] (m + M) g.h

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

EC S/2
2ECS
2E²CS
2ECS²

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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

tp /16
tp /4
16 tp
4 tp

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Theory of Machine
In a reciprocating engine, usually __________ of the reciprocating masses are balanced.

Three-fourth
Two-third
One-half
Whole

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