NDA Physics quiz work power and energy

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NDA Physics quiz work power and energy

Question 1. Work is said to be done when:

A force is applied but no displacement occurs

A displacement occurs without force

A force is applied and displacement takes place in the direction of force

No force is applied

Question 2. The SI unit of work is:

Newton

Watt

Joule

Erg

Question 3. Power is defined as:

Work done × Time

Work done per unit time

Force × Displacement

Energy stored in a body

Question 4. The SI unit of power is:

Joule

Watt

Erg

Newton

Question 5. Kinetic energy of a body depends upon:

Only its mass

Only its velocity

Both mass and square of velocity

Its acceleration

Question 6. A body of mass m moving with velocity v has kinetic energy:

m × v

m × v²

½ mv²

2mv²

Question 7. Potential energy of a body depends on:

Its temperature

Its velocity

Its position or configuration

Its density

Question 8. The commercial unit of electrical energy is:

Joule

Kilowatt-hour (kWh)

Watt

Ampere

Question 9. If power of a motor is 1 horsepower, then in watts it is equal to:

546 W

1000 W

746 W

500 W

Question 10. Work done is zero when:

Force is applied in the direction of displacement

Displacement is perpendicular to the direction of force

Displacement is zero

Force is large

Quiz

Question 1. Work is said to be done when:

Question 2. The SI unit of work is:

Question 3. Power is defined as:

Question 4. The SI unit of power is:

Question 5. Kinetic energy of a body depends upon:

Question 6. A body of mass m moving with velocity v has kinetic energy:

Question 7. Potential energy of a body depends on:

Question 8. The commercial unit of electrical energy is:

Question 9. If power of a motor is 1 horsepower, then in watts it is equal to:

Question 10. Work done is zero when:

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