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Theory of Machine

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

Sixteen times
Eight times
Twice
Four times

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Theory of Machine
Under logarithmic decrement, the amplitude of successive vibrations are

In logarithmic progression
In arithmetic progression
Constant
In geometric progression

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Theory of Machine
With single Hooke's joint it is possible to connect two shafts, the axes of which have an angular misalignment up to

10°
40°
20°
30°

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Theory of Machine
A chain comprises of 5 links having 5 joints. Is it kinematic chain?

Data are insufficient to determine it
It is a marginal case
No
Yes

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Theory of Machine
A disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied to the disc causing precession will be (where I = Mass moment of inertia of the disc, and ωP = Angular velocity of precession of the axis of spin)

I ω ωP
Iω²
(1/2). I ω ωP
(1/2).Iω²

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Theory of Machine
The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is

Chain coupling
Oldham's coupling
Flexible coupling
Universal coupling

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