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Theory of Machine

Theory of Machine
The mechanism forms a structure, when the number of degrees of freedom (n) is equal to

1
2
-1

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Theory of Machine
A body will begin to move down an inclined plane, if the angle of inclination of the plane is ________ the angle of friction.

Less than
Equal to
None of these
Greater than

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Theory of Machine
TJIE horse power transmitted by a belt is dependent upon

Tension on slack side of belt
All of these
Radius of pulley
Tension on tight side of belt

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Theory of Machine
Which of the following is an inversion of a double slider crank chain?

Elliptical trammel
All of these
Oldham's coupling
Scotch yoke mechanism

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Theory of Machine
The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω₁ rad/s in the clockwise direction and the link OB turns with angular velocity ω₂ rad/s in the clockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)

(ω₁ - ω₂)r
ω₁.ω₂.r
(ω₁ + ω₂)r
(ω₁ - ω₂)2r

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Theory of Machine
When a shaking force is transmitted through the springs, damping becomes detrimental when the ratio of its frequency to the natural frequency is greater than

0.5
0.25
2
1

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