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Theory of Machine

Theory of Machine
The moment on the pulley which produces rotation is called

Moment of momentum
Momentum
Inertia
Torque

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Theory of Machine
The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be

To dip the nose and tail
To dip the nose and raise the tail
To raise the nose and dip the tail
To raise the nose and tail

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Theory of Machine
Instantaneous center of rotation of a link in a four bar mechanism lies on

Left side pivot of this link
A point obtained by intersection on extending adjoining links
Can’t occur
Right side pivot of this link

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Theory of Machine
The Kutzbach criterion for determining the number of degrees of freedom (n) is (where l = number of links, j = number of joints and h = number of higher pairs)

n = 2(l - 1) - 2j - h
n = 3(l - 1) - 2j - h
n = 2(l - 1) - 3j - h
n = 3(l - 1) - 3j - h

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Theory of Machine
In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called

Steam lap
Exhaust lap
Lead
None of these

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Theory of Machine
The equation of motion for a vibrating system with viscous damping is (d²x/dt²) + (c/m). (dx/dt) + (s/m). x = 0. If the roots of this equation are real, then the system will be

Without vibrations
Under damped
Critically damped
Over-damped

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