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Theory of Machine

Theory of Machine
In a coupling rod of a locomotive, each of the four pairs is a ________ pair.

Rolling
Screw
Sliding
Turning

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Theory of Machine
In a kinematic chain, a quaternary joint is equivalent to

Three binary joints
Two binary joints
One binary joint
Four binary joints

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Theory of Machine
The example of successfully constrained motion is a

Motion of an I.C. engine valve
All of these
Motion of the shaft between a footstep bearing
Piston reciprocating inside an engine cylinder

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Theory of Machine
In an open pair, the two elements of a pair

Are not held together mechanically
Have a line or point contact when in motion
Are kept in contact by the action of external forces, when in motion
Have a surface contact when in motion

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Theory of Machine
Which of the following mechanisms produces mathematically an exact straight line motion?

Tchebicheff mechanism
Peaucellier's mechanism
Grasshopper mechanism
Watt mechanism

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Theory of Machine
When the sleeve of a Porter governor moves upwards, the governor speed

Decreases
First increases and then decreases
Increases
Remain unaffected

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