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Theory of Machine

Theory of Machine
A pantograph is a mechanism with

Higher pairs
Turning pairs
Lower pairs
Rolling pairs

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Theory of Machine
The Scott-Russell mechanism consists of

Turning and rotary pairs
Sliding pairs only
Sliding and rotary pairs
Sliding and turning pairs

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Theory of Machine
With usual notations for different parameters involved, the maximum fluctuations of energy for a flywheel is given by

2ECS²
EC S/2
2E²CS
2ECS

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Theory of Machine
The total number of instantaneous centers for a mechanism consisting of n links are

n(n - 1)/2
n
n - 1
n/2

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Theory of Machine
The rotating shafts tend to vibrate violently at whirling speeds because

The system is unbalanced
Resonance is caused due to the heavy mass of the rotor
Bearing centre line coincides with the axis
The shafts are rotating at very high speeds

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Theory of Machine
Which one of the following can completely balance several masses revolving in different planes on a shaft?

Two equal masses in any two planes
A single mass in different planes
Two masses in any two planes
A single mass in one of the planes of the revolving masses

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