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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
In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring)

(S₁ - S₂) / h
(S₁ + S₂) / 2h
(S₁ + S₂) / h
(S₁ - S₂) / 2h

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Theory of Machine
Frequency of vibrations is usually expressed in

Number of cycles per minute
Number of cycles per second
None of these
Number of cycles per hour

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Theory of Machine
Which of the following disciplines provides study of inertia forces arising from the combined effect of the mass and the motion of the parts?

Mechanisms
Applied mechanics
Theory of machines
Kinetics

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Theory of Machine
A mechanism _________ for transmitting or transforming motion.

Can be used
Can not be used
None of these
Unpredictable

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Theory of Machine
Which of the following is an inversion of a double slider crank chain?

Scotch yoke mechanism
Oldham's coupling
Elliptical trammel
All of these

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