Tag: physics

Quizzes (598) Questions (13441)

Questions Related to physics

Multiple choice physics save energy types of sources of energy renewable and non-renewable resources renewable and non-renewable sources of energy

Which of these is not related to energy efficiency?

  1. Useful energy
  2. $kW$

  3. Heat

  4. Energy transformation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Energy efficiency measures how much of energy is put into device to do intended job. So, it is related to useful energy, heat and energy transformation.
$kW$ or kilowatts are unit used to measure amount of electric power.

Multiple choice physics save energy types of sources of energy renewable and non-renewable resources renewable and non-renewable sources of energy

Production of electricity by wave energy requires:

  1. extremely strong pipes to carry sea water in huge waves.

  2. devices to trap wave energy for rotation of turbine.

  3. devices to boil sea water in waves.

  4. all of the above.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Wave energy requires devices to trap the energy. A wide variety of devices have been developed to trap wave energy for rotation of turbine and production of electricity.

Multiple choice physics save energy types of sources of energy renewable and non-renewable resources renewable and non-renewable sources of energy

Which of the following is not true for non-renewable sources of energy?

  1. Present in a limited quantity in nature

  2. Not replenished by any natural process

  3. Are inexhaustible

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Non renewable sources of energy are exhausted by natural human activities over a certain period of time.

Multiple choice physics save energy types of sources of energy renewable and non-renewable resources renewable and non-renewable sources of energy

Sequence of energy conversion in a thermal power plant is:
P) Heat energy Q) Electrical energy R) Mechanical energy

  1. $P\rightarrow Q\rightarrow R$
  2. $P\rightarrow R\rightarrow Q$
  3. $R\rightarrow Q\rightarrow P$
  4. $Q\rightarrow R\rightarrow P$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sequence of energy conversion is Heat energy $\rightarrow$ Mechanical energy $\rightarrow$ Electrical energy.

Multiple choice physics save energy types of sources of energy renewable and non-renewable resources renewable and non-renewable sources of energy

Which of the following is a classification of sources of energy?

  1. Conventional and Non - Conventional

  2. Mechanical and Electrical

  3. Potential and Kinetic energy

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sources of energy can be classified as conventional/non-renewable or non-conventional/renewable sources of energy.