Mechanical Quiz

What state the first law of Thermodynamics?

Conservation of Energy

Conservation of Mass

Conservation of Momentum

Conservation of Charge

Every material obeys the Hooke’s law within

Elastic limit

Plastic limit

Limit of proportionality

None of these

If a body is moving in a straight line then net force acting on it is

Constant

Increasing

Decreasing

Zero

The term inertia means which of the following? The tendency of an object to

Maintain its mass.

Remain in motion.

Remain in rest or motion.

Stop the motion of other objects.

What is the reading on the Vernier Scale?

260

150

165

700

If a material has identical properties in all directions, it is called

Elastic

Plastic

Isotropic

Homogeneous

What happens to the gravitational force between two objects if their separation is doubled? The force of attraction is

Doubled.

The same.

Half as much.

One fourth as much.

Indeterminate structures have number of unknown quantities _________ available conditions of equilibrium.

Equal to

Less than

More than

None of the above

In a simple spring-mass system, stability with oscillations is obtained when the differential equation laplace transform have..?

Positive roots

Negative roots

Imaginary positive roots

Imaginary negative roots

If two masses 5.2 kg and 4.8 kg are attached to ends of inextensible strings passed over a frictionless pulley then acceleration of system is

0.7 ms-2

0.4 ms-2

0.5 ms-2

1 ms-1

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