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Theory of Machine

Theory of Machine
The brake commonly used in railway trains is

Band brake
Band and block brake
Internal expanding brake
Shoe brake

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Theory of Machine
The factor which affects the critical speed of a shaft is

Eccentricity
Span of shaft
All of the listed here
Diameter of disc

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Theory of Machine
A Hartnell governor is a

Inertia governor
Dead weight governor
Spring loaded governor
Pendulum type governor

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Theory of Machine
The unbalanced force due to revolving masses

Varies in magnitude and direction both
Constant in magnitude and direction both
Varies in magnitude but constant in direction
Varies in direction but constant in magnitude

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Theory of Machine
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A)

vBA × AB
v²BA /AB
v²BA
vBA /AB

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Theory of Machine
The frictional torque transmitted in a flat pivot bearing with assumption of uniform pressure is _________ as compared to uniform wear.

None of the listed here
Same
More
Less

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