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Theory of Machine

Theory of Machine
Carnot cycle is

a semi-reversible cycle
an irreversible cycle
a reversible cycle
a quasi static cycle

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Theory of Machine
The example of completely constrained motion is a

Motion of a piston in the cylinder of a steam engine
All of these
Motion of a square bar in a square hole
Motion of a shaft with collars at each end in a circular hole

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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 sinθ
W cosecθ
W tanθ
W cosθ

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Theory of Machine
A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to

I₂/G
G².I₂
I₂/G²
G.I₂

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Theory of Machine
When a body is subjected to transverse vibrations, the stress induced in a body will be

Compressive stress
Bending stress
Shear stress
Tensile stress

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Theory of Machine
In vibration isolation system, if ω/ωn < 2, then for all values of damping factor, the transmissibility will be (where ω = Angular speed of the system, ωn = Natural frequency of vibration of the system)

Zero
Greater than unity
Equal to unity
Less than unity

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