Question # 1

Which of the following types of force can do no work on the particle on which it acts

Choose an answer

Frictional force

Gravitational force

Electric force

Centripetal force

Work is a always done on a body when

Choose an answer

A force acts on it

It moves through certain distance

None of A or B is correct

Both A and B are correct

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Choose an answer

Much more

Very small

No amount at all

None of these

The work done in moving a body between two points in a conservative field is independent of the

Choose an answer

Direction

Force applied

Path followed by the body

Power

A solar cell converts energy of the Sun into:

Choose an answer

Heat energy

Magnetic energy

Light energy

Sound energy

The field in which work done is moving body between two points depends upon the path followed is called:

Choose an answer

Conservative filed

Non-conservative field

Electric field

None of these

The commercial unit of electrical energy is :

Choose an answer

K Watt

KWH

Horse power

Joule

Work has the dimensions as that of

Choose an answer

Torque

Angular momentum

Linear momentum

Power

A field in which the work done in moving a body along closed path is zero is called

Choose an answer

Nuclear Field

Conservative field

Gravitational field

Non-conservative field

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

Choose an answer

0.5 Kwn

2 Kwh

1 Kwh

None of these

If force and displacement are in opposite direction, the work done is taken as:

Choose an answer

Positive work

Negative work

Zero work

Infinte work

In the force applied is parallel to the direction of motion, then work done is:

Choose an answer

Maximum

Minimum

Zero

None of these

The work done by a force keeping an object in circular motion with constant speed is:

Choose an answer

Zero J.

0.1 J

1 J

0.01 J

The space around the earth within which it expects a force of attraction on other bodies is known as:

Choose an answer

Nuclear field

Conservative field

Electric field

Gravitational field

When the body is moves against the force of friction on a horizontal plane, the work done by the body is:

Choose an answer

Positive

Negative

Zero

None of these

The ultimate source of money sources of energy is:

Choose an answer

Sun

Air

Water

Petroleum

More Classes

Other Links

Physics ECAT Pre Engineering Chapter 4 Work and Energy Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer