Tag: save energy

Questions Related to save energy

State whether given statement is True or False
Electricity is power.

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

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Electricity is movement of electrons across atoms.

The predominant source of energy on Earth is

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

  1. plants

  2. natural gas

  3. electricity

  4. the Sun

Show answer
Correct Option: D
Explanation:

Solar energy is renewable source of energy.  And Sun is the predominant source of energy. 

State True or False :
Wind can be used to generate electricity.

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

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Wind energy is useful. Wind mills has been used since ages. Wind mills are used to generate electricity. The kinetic energy of wind is utilised to run the wind mill.

The amount of oil available for use are from oil 

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

  1. reserve

  2. reservoir

  3. resources

  4. barrels

Show answer
Correct Option: C
Explanation:

Reserve and Reservoir where we store them. Barrels are small containers where processed oil is packaged.

Which of the following is used to produce electricity?

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

  1. Water

  2. Biomass

  3. Thermal power

  4. All of the above

Show answer
Correct Option: D
Explanation:

Water is a source of hydel energy.
Biomass helps to produce biogas in rural areas.
Thermal power plants produce electricity by burning of coal.
All of them are sources of energy and produce electricity.

Which among the following is not a renewable source of energy?

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

  1. Solar

  2. Geothermal

  3. Hydropower

  4. Biomass

Show answer
Correct Option: D
Explanation:

Among the following biomass is a non renewable source of energy. 

Lignite and Bituminous are 

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

  1. Nuclear fuel

  2. Coal

  3. Natural gas

  4. Biogas

Show answer
Correct Option: B
Explanation:

These are different ranks of coal which is non renewable source of energy.

State True or False :
Electricity is exclusively a non-renewable resource.

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

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Electricity can be produced by another energy sources. It is not a primary energy form. It can be generated from renewable as well non-renewable sources of energy.

Choose the correct statement.

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

  1. Power of  magnets in hydro power plants increases with time.

  2. Magnets are involved in the generation of electricity in hydro power plants.

  3. In hydro power plants, magnetic energy is converted into electrical energy.

  4. In hydro power plants, electrical energy is converted into magnetic energy.

Show answer
Correct Option: B
Explanation:

Magnets slowly lose their strength with time.

In hydro power plants, kinetic energy from water is converted to electrical energy. This is done with the help of magnets. A coil is rotated (from kinetic energy of water) between two magnets to generate electricity.

Which of these is not related to energy efficiency?

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

  1. Useful energy

  2. $kW$

  3. Heat

  4. Energy transformation

Show answer
Correct Option: B
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.