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Theory of Machine

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

Two nodes
Three nodes
One node
No node

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Theory of Machine
The mechanism forms a structure, when the number of degrees of freedom (n) is equal to

1
2
-1

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Theory of Machine
The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain, is known as

Inversion
Structure
Machine
Compound mechanism

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Theory of Machine
In an ideal machine, the output as compared to input is

More
Equal
May be less or more depending on efficiency
Less

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Theory of Machine
V-belts are usually used for

None of these
Short drives
Long drives
Long and short drives

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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

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

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