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Theory of Machine

Theory of Machine
A rigid body possesses ________degrees of freedom

One
Four
Two
Six

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Theory of Machine
In a reciprocating steam engine, when the crank has turned from inner dead centre through an angle θ, the angular velocity of the connecting rod is given by

ω cosθ/(n² - sin²θ)1/2
ω sinθ/(n² - sin²θ)1/2
ω sinθ/(n² - cos²θ)1/2
ω cosθ/(n² - cos²θ)1/2

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

Circle
Parabola
Ellipse
Straight line

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Theory of Machine
The component of the acceleration, parallel to the velocity of the particle, at the given instant is called

Radial component
Tangential component
Coriolis component
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

Over-damped
Without vibrations
Under damped
Critically damped

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Theory of Machine
If the pressure angle is __________, a reciprocating follower will jam in its bearings.

Too small
Small
Large
Too large

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