Tag: electric energy generation and environment

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Questions Related to electric energy generation and environment

Multiple choice physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy
State whether the given statement is True or False :
Solar panel can be set up in remote and inaccessible hamlets or very sparsely inhabited areas. 

  1. True

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

Solar panels are ideal for remote areas because they do not require a connection to a centralized power grid. They can generate electricity locally using sunlight, making them a practical solution for sparsely inhabited regions.

Multiple choice physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

Of the following, renewable source of energy is

  1. Wood

  2. Petroleum

  3. Natural gas

  4. Uranium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Wood is a renewable source of energy because it can be replenished by planting new trees. Petroleum, natural gas, and uranium are finite fossil or mineral fuels that cannot be replaced on a human timescale.

Multiple choice physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

The sources of energy which are being produced continuously in nature and are inexhaustible, are called

  1. Conventional sources

  2. Non-renewable sources

  3. Non-conventional sources

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

Sources of energy that are inexhaustible and produced continuously in nature are generally classified as non-conventional or renewable sources. Conventional sources like coal and petroleum are finite and exhaustible.

Multiple choice physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

Solar energy can be used to produce

  1. Electrical energy

  2. Mechanical energy

  3. Heat energy

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Solar energy can be converted into electrical energy using photovoltaic cells, heat energy using solar thermal collectors, and mechanical energy through various solar-powered engines or systems.

Multiple choice physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

Which of the following devices transforms light energy into chemical energy?

  1. Car dynamo

  2. Electric motor

  3. Electric fan

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

None of the listed devices (car dynamo, electric motor, electric fan) transform light energy into chemical energy. Photosynthesis in plants is the primary natural process that performs this transformation.

Multiple choice physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

Biomass based energy can be obtained from :

  1. direct burning of wood, agricultural residue etc.

  2. biomass may be converted in to some other form of fuel which can release energy.

  3. bacterial decomposition of organic matters like cow dung, agricultural wastes, human excreta etc. in presence of water in absence of air, a mixture of $CH _4, CO _2, H _2, H _2S $ etc.

  4. burning of industrial waste.
Reveal answer Fill a bubble to check yourself
A,B,C Correct answer
Explanation

A biofuel is a fuel that is produced through contemporary biological processes, such as agriculture and anaerobic digestion, rather than a fuel produced by geological processes such as those involved in the formation of fossil fuels, such as coal and petroleum, from prehistoric biological matter. Biofuels can be derived directly from plants, or indirectly from agricultural, commercial, domestic, and/or industrial wastes. Renewable biofuels generally involve contemporary carbon fixation, such as those that occur in plants or microalgae through the process of photosynthesis. Other renewable biofuels are made through the use or conversion of biomass (referring to recently living organisms, most often referring to plants or plant-derived materials). This biomass can be converted to convenient energy-containing substances in three different ways: thermal conversion, chemical conversion, and biochemical conversion. This biomass conversion can result in fuel in solid, liquid, or gas form. This new biomass can also be used directly for biofuels.