Tag: sources of energy

Quizzes (16) Questions (65)

Questions Related to sources of energy

Multiple choice physics sources of energy wave energy tidal energy wave power and tidal power

Arrange the following steps of conversion of ocean thermal energy into electricity, in a proper sequence.
(a) The vapour of ammonia or CFC is passed over the turbines of generators.
(b) The hot water from the ocean is used to vapourise the liquid like ammonia or CFC.
(c) Cold water from the ocean depths is used to cool the vapour again into liquid.
(d) This cold liquid is again vapourised and the process continues.

  1. b a c d

  2. c a b d

  3. c b a d

  4. a b c d
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The hot water in the ocean is used to evaporate liquids like ammonia or CFC. This vapour is used to rotate the turbines of the generator and the vapour is again cooled down to a liquid by using the cold water from the ocean depth. This cooled liquid ammonia or CFC is again vapourised and the above process continues.

Multiple choice physics sources of energy wave energy tidal energy wave power and tidal power

Tidal energy is a major source of energy due to the presence of large water bodies on the earth.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

While tidal energy is a source of energy, it is not considered a 'major' source compared to other renewables due to limited suitable sites and high infrastructure costs.

Multiple choice physics sources of energy wave energy tidal energy wave power and tidal power

_________ are used to produce energy in OTEC.

  1. Tidal energy

  2. Temperature difference between the different layers of water in ocean

  3. Ocean waves

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

OTEC stands for Ocean Thermal Energy Conversion, which specifically uses the temperature gradient between surface and deep ocean layers to generate electricity.

Multiple choice physics sources of energy wave energy tidal energy wave power and tidal power

Which of the following is not a form of oceanic energy?

  1. Energy from biomass

  2. Tidal energy

  3. Ocean thermal energy

  4. Solar energy
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Solar energy is a primary source of energy that drives other processes, but it is not classified as a form of oceanic energy itself, unlike tidal, wave, or thermal energy.

Multiple choice physics sources of energy wave energy tidal energy wave power and tidal power

The oceans cover almost ...... percent of the surface of earth with water and act as a vast collector of ...... energy.

  1. $71$, chemical

  2. $97$, solar

  3. $71$, solar

  4. $17$, hydroenergy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Oceans cover approximately 71 percent of the Earth's surface and act as a vast collector of solar energy, which is stored as heat in the surface waters.

Multiple choice physics sources of energy electricity from water energy hydro electricity hydro energy

Construction of dams

  1. Is always an advantageous process

  2. Has only disadvantages

  3. Both

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

The construction of dams for generating hydro electric power and then installation of transformers and their connection to the national grid has the following four main advantages:

A) disturbance of the natural ecosystem in the surrounding forest area

B) disruption of the plants and animals life

C) displacement of people on a large scale

D) disruption of the aquatic ecosystem.

So,construction of dams is not always advantageous.

Multiple choice physics sources of energy electricity from water energy hydro electricity hydro energy

Arrange the following steps in the conversion of hydel energy to electricity in a proper sequence.
(a) Released water is made to fall on the blades of the turbines.
(b) Water in the dam is released.
(c) Water is collected in the dam.
(d) Potential energy is converted to kinetic energy.
(e) The armature of the electric generator rotates to produce electricity.

  1. b c d e a

  2. a d b c e

  3. e c d b a

  4. c b d a e
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Initially water is collected in the dam. When it is released, the potential energy is converted to kinetic energy. The released water is made to fall on the blades of turbines. The armature of the electric generator rotates to produce electricity.