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Theory of Machine

Theory of Machine
The size of cam depends upon

Pitch curve
Prime circle
Pitch circle
Base circle

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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

G.I₂
I₂/G²
G².I₂
I₂/G

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Theory of Machine
The swaying couple is maximum or minimum when the angle of inclination of the crank to the line of stroke (θ) is equal to

45° and 225°
180° and 270°
90° and 180°
270° and 360°

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Theory of Machine
The equation of motion for a single degree of freedom system with viscous damping is 4(dx²/dt²) + 9(dx/dt) + 16x. The damping ratio of the system is

44082
30195
9/128
44090

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

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

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Theory of Machine
A foot step bearing and rotor of a vertical turbine form examples of

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

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