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Theory of Machine

Theory of Machine
When the speed of the engine fluctuates continuously above and below the mean speed, the governor is said to be

Stable
Unstable
Hunt
Isochronous

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Theory of Machine
A mechanism consisting of four links is called a __________ mechanism.

Compound
Simple
Binary
None of these

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Theory of Machine
Governor is used in automobile to

Maximize the fuel economy
Decrease the variation of speed
Limit the vehicle speed
Maintain constant engine speed

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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)

cosβ
cosecβ
secβ
sinβ

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Theory of Machine
In order to facilitate starting of locomotive in any position, the cranks of a locomotive with two cylinders, are placed at

120° to each other
180° to each other
45° to each other
90° to each other

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Theory of Machine
V-belts are usually used for

Short drives
None of these
Long drives
Long and short drives

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