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Theory of Machine

Theory of Machine
V-belts are usually used for

Long drives
Short drives
Long and short drives
None of these

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Theory of Machine
Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts?

Applied mechanics
Mechanisms
Theory of machines
Kinetics

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Theory of Machine
A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of the rotor separately, are 100 Hz and 200 Hz respectively. The lowest critical speed is

9,360 r.p.m.
5,367 r.p.m.
12,000 r.p.m.
6,000 r.p.m.

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Theory of Machine
In which of the following type of gear train the first gear and the last gear are co-axial.

Reverted gear train
Compound gear train
Simple gear train
None of the listed here

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Theory of Machine
The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is

Oldham's coupling
Universal coupling
Flexible coupling
Chain coupling

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Theory of Machine
When the crank is at the inner dead center, in a reciprocating steam engine, then the acceleration of the piston will be

ω²r. n/(n + 1)
ω²r. n/(n - 1)
ω²r. (n + 1)/n
ω²r. (n - 1)/n

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