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Theory of Machine

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
l - 1
l + 1
l - 2

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

Rolling
Turning
Sliding
Screw

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Theory of Machine
The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be

To raise the stern and lower the bow
To raise the bow and stern
To lower the bow and stern
To raise the bow and lower the stern

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Theory of Machine
Sense of tangential acceleration of a link

Is perpendicular to that of velocity
Is opposite to that of velocity
Is same as that of velocity
Could be either same or opposite to velocity

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Theory of Machine
Carnot cycle is

a reversible cycle
an irreversible cycle
a semi-reversible cycle
a quasi static cycle

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Theory of Machine
The acceleration of a particle at any instant has two components i.e. radial component and tangential component. These two components will be

Perpendicular to each other
Parallel to each other
Inclined at 45°
Opposite to each other

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