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Theory of Machine

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

One node
No node
Three nodes
Two nodes

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Theory of Machine
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line

Joining the corresponding points
Perpendicular to line as per (A)
Not possible to determine with these data
At 45° to line as per (A)

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Theory of Machine
An engine operates between temperatures of 900°Kandr2 and another engine between T2 and 400°K For both to do equal work, value of T2 will be

650°K
625°K
600°K
700°K

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Theory of Machine
The method of direct and reverse cranks is used in engines for

Balancing of forces and couples
The control of speed fluctuations
Kinematic analysis
Vibration analysis

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Theory of Machine
The main disadvantage of the sliding pair is that it is

Bulky
Both (A) and (B) above
Difficult to manufacture
Wears rapidly

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Theory of Machine
When the radius of rotation of balls __________ as the equilibrium speed increases, the governor is said to be unstable.

Remains constant
None of these
Decreases
Increases

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