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Question (31)

QN0026346

Which form of energy is used in cooking gas?

(A) Mechanical energy
(B) Chemical energy
(C) Electrical energy
(D) Nuclear energy

Correct Answer: B

Explanation:

LPG stores chemical energy.

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Question (32)

QN0026347

A hydroelectric plant mainly converts:

(A) Heat energy into sound energy
(B) Mechanical energy into electrical energy
(C) Chemical energy into electrical energy
(D) Sound energy into electrical energy

Correct Answer: B

Explanation:

Turbines convert mechanical energy into electricity.

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Question (33)

QN0026348

Which form of energy does a compressed spring possess?

(A) Kinetic energy
(B) Electrical energy
(C) Potential energy
(D) Light energy

Correct Answer: C

Explanation:

A compressed spring stores elastic potential energy.

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Question (34)

QN0026349

Windmills convert wind energy into:

(A) Chemical energy
(B) Electrical energy
(C) Heat energy
(D) Nuclear energy

Correct Answer: B

Explanation:

Wind turbines generate electricity.

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Question (35)

QN0026350

Which device converts solar energy directly into electrical energy?

(A) Electric motor
(B) Solar cell
(C) Generator
(D) Heater

Correct Answer: B

Explanation:

Solar cells convert sunlight directly into electricity.

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Question (36)

QN0026351

The SI unit of all forms of energy is:

(A) Watt
(B) Newton
(C) Joule
(D) Pascal

Correct Answer: C

Explanation:

SI unit of energy is joule.

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Question (37)

QN0026352

A pendulum at its highest position possesses maximum:

(A) Kinetic energy
(B) Potential energy
(C) Sound energy
(D) Heat energy

Correct Answer: B

Explanation:

Height is maximum at extreme position.

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Question (38)

QN0026353

Which activity demonstrates conversion of muscular energy into mechanical energy?

(A) Sleeping
(B) Running
(C) Reading
(D) Watching television

Correct Answer: B

Explanation:

Muscles produce movement while running.

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Question (39)

QN0026354

Power is defined as:

(A) Work done × time
(B) Work done per unit time
(C) Force × displacement
(D) Energy × velocity

Correct Answer: B

Explanation:

Power = Work ÷ Time.

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Question (40)

QN0026355

The SI unit of power is:

(A) Joule
(B) Newton
(C) Watt
(D) Pascal

Correct Answer: C

Explanation:

SI unit of power is watt.

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Question (31)

Which form of energy is used in cooking gas?

Explanation:

Link:

Question (32)

A hydroelectric plant mainly converts:

Explanation:

Link:

Question (33)

Which form of energy does a compressed spring possess?

Explanation:

Link:

Question (34)

Windmills convert wind energy into:

Explanation:

Link:

Question (35)

Which device converts solar energy directly into electrical energy?

Explanation:

Link:

Question (36)

The SI unit of all forms of energy is:

Explanation:

Link:

Question (37)

A pendulum at its highest position possesses maximum:

Explanation:

Link:

Question (38)

Which activity demonstrates conversion of muscular energy into mechanical energy?

Explanation:

Link:

Question (39)

Power is defined as:

Explanation:

Link:

Question (40)

The SI unit of power is:

Explanation:

Link:

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