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Theory of Machine

Theory of Machine
At the nodal point in a shaft, the amplitude for torsional vibration will be

Minimum
Zero
Maximum
Infinity

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Theory of Machine
A higher pair has__________.

None of these
Point contact
Surface contact
No contact

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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

Compound mechanism
Structure
Machine
Inversion

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Theory of Machine
A system in dynamic balance implies that

The system is also statically balanced
There is no critical speed in the system
The system is critically damped
There will absolutely no wear of bearings

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Theory of Machine
One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where δ = Deflection of the spring)

2π. √(δ/g)
2π. √(g/δ)
1/2π. √(g/δ)
1/2π. √(δ/g)

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Theory of Machine
If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to

l - 1
l - 2
l
l + 1

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