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Theory of Machine

Theory of Machine
Any point on a link connecting double slider crank chain will trace a

Straight line
Ellipse
Parabola
Circle

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Theory of Machine
Coriolis component acts

None of these
Perpendicular to sliding surfaces
Along sliding surfaces
Somewhere in between above two

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Theory of Machine
A spring controlled governor is found unstable. It can be made stable by

Increasing the ball mass
Decreasing the ball mass
Decreasing the spring stiffness
Increasing the spring stiffness

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Theory of Machine
The frictional torque transmitted in a flat pivot bearing, assuming uniform wear, is (Where μ = Coefficient of friction, W=Load over the bearing, R=Radius of bearing)

½μWR
¾μWR
μwr
²/₃ μWR

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Theory of Machine
The relation between number of links (l) and number of joints (j) in a kinematic chain is

l = (1/2).(j + 2)
l = j + 4
l = (2/3).(j + 2)
l = (3/4).(j + 3)

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Theory of Machine
Sense of tangential acceleration of a link

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

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