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Theory of Machine

Theory of Machine
The locus of a point on a thread unwound from a cylinder will be

Cycloidal
A circle
A straight line
Involute

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Theory of Machine
For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that

Governor B is more sensitive than governor A
None of these
Governor A is more sensitive than governor B
Both governors A and B are equally sensitive

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Theory of Machine
For an involute gear, the ratio of base circle radius and pitch circle radius is equal to

cosecφ
secφ
sinφ
cosφ

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Theory of Machine
In a spring controlled governor, when the controlling force ____ as the radius of rotation increases, it is said to be a stable governor.

Increases
Decreases
None of the listed here
Remains constant

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Theory of Machine
A shaft carrying two rotors at its ends will have

Two nodes
No node
One node
Three nodes

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Theory of Machine
To obviate axial thrust, following gear drive is used

Mutter gears
Double helical gears having identical teeth
Double helical gears having opposite teeth
Single helical gear in which one of the teeth of helix angle a is more

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