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Theory of Machine

Theory of Machine
In automobiles the power is transmitted from gear box to differential through

Bevel gear
Universal joint
Knuckle joint
Hooke's joint

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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
G.I₂
G².I₂
I₂/G²

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Theory of Machine
The acceleration of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by

ω² (R - r₁) cosθ
ω² R cosθ
ω² (R - r₁) sinθ
ω² r₁ sinθ

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Theory of Machine
A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 10 rad/s. When the shaft is rotated at 300 r.p.m., it will whirl with a radius of

3.0 mm
2.50 mm
2 mm
2.22 mm

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Theory of Machine
A point on a link connecting double slider crank chain traces a

Circle
Parabola
Ellipse
Hyperbola

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Theory of Machine
Carnot cycle is

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

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