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Theory Of Machine
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Q401

A mass of 1 kg is attached to the end of a spring with a stiffness of 0.7 N/mm. The critical damping coefficient of this system is

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Q402

The Hooke's joint consists of:

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Q403

In a cam drive with uniform velocity follower, the sharp corners of the displacement diagram are rounded off at the beginning and at the end of each stroke. This is done

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Q404

The relation between the controlling force (F_c) and radius of rotation (r) for a stable spring controlled governor is

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Q405

The velocity of a particle moving with simple harmonic motion, at any instant is given by (where

ω

= Displacement of the particle from mean position)

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Q406

The partial balancing of reciprocating parts in locomotives produces

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Q407

The acceleration of a particle at any instant has two components i.e. radial component and tangential component. These two components will be

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Q408

An exact straight line motion mechanism is a

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Q409

In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links

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Q410

In a Hartnell governor, the stiffness of the spring is given by (where S₁ and S₂ = Spring forces exerted on the sleeve at max. and min. radii of rotation and h = Compression of the spring)

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Q411

One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where

δ

= Deflection of the spring)

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Q412

In vibration isolation system, if

\frac{ω}{ω n} < 2,

then for all values of damping factor, the transmissibility will be (where

ω

= Angular speed of the system,

ω n

= Natural frequency of vibration of the system)

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Q413

Which of the following would constitute a link?

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Q414

The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as

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Q415

In a mechanism, the fixed instantaneous centers are those centers which

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Q416

The moment on the pulley which produces rotation is called

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Q417

The tendency of a body to resist change from rest or motion is known as

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Q418

The length of a simple pendulum which gives the same frequency as the compound pendulum, is

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Q419

For the brake to be self locking, the force P at C shown in the below figure, should
Theory of Machine mcq question image

Theory of Machine mcq question image

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Q420

When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.

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