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Theory of Machine

Theory of Machine
Which of the following is a higher pair?

Screw pair
Belt and pulley
Turning pair
Sliding pair

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Theory of Machine
If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be

Stable
None of the listed here
Isochronous
Unstable

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Theory of Machine
In multi V-belt transmission, if one of the belt is broken, we have to change the

All the belts
Broken belt
Broken belt and its adjacent belts
There is no need of changing any one as remaining belts can take care of transmission of load

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Theory of Machine
Which of the following is an open pair?

Cam and follower
Ball and socket joint
Lead screw and nut
Journal bearing

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Theory of Machine
A disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied to the disc causing precession will be (where I = Mass moment of inertia of the disc, and ωP = Angular velocity of precession of the axis of spin)

Iω²
(1/2).Iω²
I ω ωP
(1/2). I ω ωP

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Theory of Machine
When a rigid body is suspended vertically and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

Simple pendulum
Compound pendulum
Second's pendulum
Torsional pendulum

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