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Theory of Machine

Theory of Machine
The radial distance of a tooth from the pitch circle to the bottom of the tooth is called

Dedendum
Clearance
Addendum
Working depth

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Theory of Machine
A kinematic chain is known as a mechanism when

One of the links is fixed
None of the links is fixed
None of these
Two of the links are fixed

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Theory of Machine
The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)

r sinφ
(r/2) cosφ
r cosφ
r tanφ

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Theory of Machine
The frictional torque transmitted in a flat pivot bearing, assuming uniform wear, is (Where μ = Coefficient of friction, W=Load over the bearing, R=Radius of bearing)

²/₃ μWR
μwr
¾μWR
½μWR

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Theory of Machine
The critical speed of a shaft depends upon its

Stiffness
Stiffness and eccentricity
Mass and stiffness
Mass

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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.

Decreases
None of the listed here
Increases
Remains constant

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