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Theory of Machine

Theory of Machine
If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to

l + 1
l - 2
l - 1
l

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Theory of Machine
When a body moves with simple harmonic motion, the product of its periodic time and frequency is equal to

One
Zero
π/2
π

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Theory of Machine
The following is the inversion of slider crank chain mechanism

Oscillating cylinder engine
All of these
Whitworth quick return mechanism
Hand pump

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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 anticlockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)

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

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Theory of Machine
Which of the following disciplines provides study of relative motion between the parts of a machine?

Applied mechanics
Mechanisms
Kinematics
Theory of machines

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Theory of Machine
The frictional torque transmitted by a disc or plate clutch is same as that of

Truncated conical pivot bearing
Flat collar bearing
Flat pivot bearing
Conical pivot bearing

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