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Theory of Machine

Theory of Machine
For fluctuating loads, well suited bearing is

Thrust bearing
Ball bearing
Needle roller bearing
Roller bearing

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Theory of Machine
The velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by (where ω = Angular velocity of the cam shaft)

ω (r₁ + r₂) cosθ cosec2θ
ω (r₁ r₂) cosθ
ω (r₁ r₂) sinθ
ω (r₁ + r₂) sinθ sec2θ

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Theory of Machine
A shaft carrying two rotors at its ends will have

Three nodes
Two nodes
No node
One node

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Theory of Machine
The main disadvantage of the sliding pair is that it is

Bulky
Both (A) and (B) above
Wears rapidly
Difficult to manufacture

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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

Second's pendulum
Compound pendulum
Simple pendulum
Torsional pendulum

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Theory of Machine
Peaucellier’s mechanism has

Eight links
Twelve links
Six links
Four links

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