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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 - 2
l
l - 1
l + 1

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Theory of Machine
Which of the following has sliding motion?

Connecting rod
Cross-head
Crank pin
Crank

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Theory of Machine
________ is an inversion of Double slider crank chain.

Reciprocating engine
Scotch yoke mechanism
Hand pump
Coupling rod of a locomotive

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Theory of Machine
When a slider moves on a fixed link having curved surface, their instantaneous centre lies

At the pin joint
At the centre of curvature
On their point of contact
At the centre of circle

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Theory of Machine
The Klein's diagram is used when

Crank has uniform angular acceleration
Crank has nonuniform angular velocity
Crank has nonuniform angular acceleration
Crank has uniform angular velocity

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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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