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Theory of Machine

Theory of Machine
When one of the links of a kinematic chain is fixed, the chain is known as a

Inversion
Structure
Machine
Mechanism

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Theory of Machine
The D-slide valve is also known as

None of these
Inside admission valve
Outside admission valve
Piston slide valve

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Theory of Machine
The method of direct and reverse cranks is used in engines for

Kinematic analysis
Vibration analysis
Balancing of forces and couples
The control of speed fluctuations

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Theory of Machine
The frictional torque transmitted in a conical pivot bearing, considering uniform pressure, is (where R = Radius of shaft, and α = Semi-angle of the cone)

(2/3) μ W R cosecα
(1/2) μ W R cosecα
μ W R cosecα
(3/4) μ W R cosecα

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

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Theory of Machine
In vibration isolation system, if ω/ωn > 1, then the phase difference between the transmitted force and the disturbing force is

0°
270°
90°
180°

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