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Theory of Machine

Theory of Machine
The primary unbalanced force is maximum _________ in one revolution of the crank.

Sixteen times
Four times
Eight times
Twice

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

Pentagon
Rectangle
Triangle
Parallelogram

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Theory of Machine
When a point at the end of a link moves with constant angular velocity, its acceleration will have

Radial component only
Coriolis component only
Tangential component only
Radial and tangential components both

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Theory of Machine
A circular bar moving in a round hole is an example of

Partially constrained motion
Completely constrained motion
Incompletely constrained motion
Successfully constrained motion

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Theory of Machine
In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO. The acceleration of the piston P with respect to the crank-pin C is given by

ω² × CN
ω² × QN
ω² × CO
ω² × NO

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Theory of Machine
The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)

r sinφ
r cosφ
r tanφ
(r/2) cosφ

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MORE MCQ ON Theory of Machine

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