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Theory Of Machine
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Q521

The equation of free vibrations of a system is

\frac{d ^{2} x}{d t ^{2}} + 36 π^{2} x = 0,

its natural frequency is

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Q522

A rotor supported at A and B carries two masses as shown in the below figure. The rotor is
Theory of Machine mcq question image

Theory of Machine mcq question image

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Q523

According to Kennedy's theorem, if three bodies have plane motions, their instantaneous centers lie on

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Q524

The amplitude of vibration is always __________ the radius of the circle.

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Q525

The Bifilar suspension method is used to determine

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Q526

Under logarithmic decrement, the amplitude of successive vibrations are

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Q527

At the nodal point in a shaft, the amplitude for torsional vibration will be

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Q528

In a multiple V-belt drive, if one of the belts is broken, then we should replace

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Q529

The displacement of the reciprocating roller follower, when it has contact with the straight flanks of the tangent cam, is given by (where r₁ = Minimum radius of the cam, r₂ = Radius of the roller follower and

θ

= Angle turned by the cam from the beginning of the follower displacement)

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Q530

A flywheel is fitted to the crankshaft of an engine having W as the amount of indicated work per revolution and permissible limits of coefficient of fluctuation of energy and speed as C_E and C_S respectively. The kinetic energy of the flywheel is given by

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Q531

With usual notations for different parameters involved, the maximum fluctuations of energy for a flywheel is given by

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Q532

A body in motion will be subjected to Coriolis acceleration when that body is

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Q533

A cam with a roller follower would constitute following type of pair

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Q534

Rectangular bar in a rectangular hole is the following type of pair

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Q535

Shaft revolving in a bearing is the following type of pair

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Q536

In a differential band brake as shown in the below figure, if the length OB is greater than OA, then the force P at C should act in the downward direction.
Theory of Machine mcq question image

Theory of Machine mcq question image

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Q537

Two systems shall be dynamically equivalent when

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Q538

When a shaking force is transmitted through the springs, damping becomes detrimental when the ratio of its frequency to the natural frequency is greater than

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Q539

When the particles of a body moves perpendicular to its axis, then the body is said to have

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Q540

When there is a reduction in amplitude over every cycle of vibration, then the body is said to have

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