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Theory of Machine

Theory of Machine
In a shaper mechanism, the Coriolis component of acceleration will

Exist
None of these
Not exist
Depend on position of crank

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Theory of Machine
If the opposite links of a four bar linkage are equal, the links will always form a

Triangle
Rectangle
Parallelogram
Pentagon

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Theory of Machine
The minimum force required to slide a body of weight W on a rough horizontal plane is

W cosecθ
W sinθ
W cosθ
W tanθ

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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)

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

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Theory of Machine
The danger of breakage and vibration is maximum

Near the critical speed
None of these
Below the critical speed
Above the critical speed

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Theory of Machine
The mechanism in which two are turning pairs and two are sliding pairs, is called a

All of these
Elliptical trammel
Double slider crank chain
Scotch yoke mechanism

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