Environmental Studies ยท Science General

Energy Resources and Storage

2,821 Questions

Energy Resources questions explore conventional and renewable energy sources, including wind, hydropower, and biomass technologies. These concepts are crucial for SSC, UPSC, and state competitive exams. Practice these questions to understand energy generation and storage technologies better.

Renewable energy sourcesWind turbine componentsHydropower plant basicsBiomass energy generationOcean wave technology

Energy Resources and Storage Questions

Multiple choice

Which is the most widely used form of renewable energy?

  1. Solar energy

  2. Hydel energy

  3. Wind energy

  4. Nuclear energy

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hydroelectricity is the most widely used form of renewable energy, accounting for 16 percent of global electricity consumption, and 3427 terawatt-hours of electricity production in 2010, which continues the rapid rate of increase experienced between 2003 and 2009.

Multiple choice

Which of the following may be counted as plus points of wind energy?

  1. Consistent over short periods
  2. Widely distributed
  3. No GHG emissions

  1. Only 1 and 2

  2. Only 2 and 3

  3. Only 1 and 3

  4. All 1, 2 and 3
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Wind power, as an alternative to fossil fuels, is plentiful, renewable, widely distributed, clean, produces no greenhouse gas emissions during operation and uses little land. Once the wind turbine is built, the energy it produces does not cause green house gases or other pollutants. Wind power is very consistent from year to year but has significant variation over shorter time scales.

Multiple choice

Biomass can be converted into energy by

  1. thermal conversion
  2. chemical conversion
  3. biochemical conversion

  1. 1 and 2

  2. 2 and 3

  3. 1 and 3

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

Biomass is the biological material from living, or recently living organisms, most often referring to plants or plant-derived materials. As a renewable energy source, biomass can either be used directly or indirectly -- once or converted into another type of energy product such as biofuel. Biomass can be converted to energy in three ways: thermal conversion, chemical conversion and biochemical conversion.

Multiple choice

Consider the following facts about wind energy.

  1. The amount of energy produced by wind turbine is directly proportional to the size of the rotor blade.
  2. Kites are a potential answer to harnessing high altitude winds into electrical power.
  3. Currently, wind energy contributes to only about 2.5% of total world energy production.

Which of the above are true?

  1. 1 and 2

  2. 2 and 3

  3. 1 and 3

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

The amount of energy produced by your wind turbine is proportional to the size of the rotor used, when all other factors have been taken into consideration. A bigger rotor certainly generates more power.

Kites provide a cheap and easy way to harness the power of the wind at high altitude, and are a key research area towards development of airborne wind farms. An airborne wind turbine is a design concept for a wind turbine that is supported in the air without a tower and itcarries the advantage of tapping an almost constant wind, without requirements for slip rings or yaw mechanism, and without the expense of tower construction. Wind power contributes to around 2.5% of world electricity generation, and is estimated to be growing at 25% per annum.
Multiple choice

The Jatropha plant can be used as a source of

  1. Biodiesel
  2. Jet Fuel
  3. Biomass feedstock to power electricity plants

  1. 1 and 2

  2. 2 and 3

  3. 1 and 3

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

When jatropha seeds are crushed, the resulting jatropha oil can be processed to produce a high-quality biodiesel that can be used in a standard diesel car or further processed into jet fuel, while the residue (press cake) can also be can be used as biomass feedstock to power electricity plants, used as fertilizer (it contains nitrogen, phosphorus and potassium), or as animal fodder. The cake can also be used as feed in digesters and gasifiers to produce biogas.

Multiple choice

Which of the following is/are renewable resource(s)?

  1. Wood

  2. Wildlife

  3. Forests

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

A renewable resource is a resource which is replaced naturally and can be used again. Examples are: oxygen, freshwater, solar energy, timber and biomass.

Multiple choice

Khadin system relates to which of the following?

  1. Biogas plant

  2. Soil conservation system

  3. Power management system

  4. Water harvesting system
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Khadin, also called dhora, is a construction designed to harvest surface runoff water for agriculture. It was first designed in western Rajasthan in the 15th century.

Multiple choice

Which of the following energy productions is expected to have the highest value (gm/m2/yr) in a grassland ecosystem?

  1. Secondary production (SP)

  2. Tertiary production (TP)

  3. Gross production (GP)

  4. Net production (NP)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The rate of total capture of energy or the rate of total production of organic material is gross primary productivity while the balance or biomass remaining after meeting the cost of respiration of producers is net primary productivity. Hence, gross productivity has the highest value in grass land ecosystem.

Multiple choice

Where does the energy that powers water cycle does come from?

  1. Plants

  2. Animals

  3. Industries

  4. Sun

  5. Oceans
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sun is the main source of the energy as Due to the heat of Sun the surface water of earth evaporate in to the atmosphere, which return back through condensation in the form of rain and snow.

Multiple choice

Which of the following statements is/are true?

  1. Wind energy is an environment-friendly source of energy.

  2. Wind energy is a renewable source of energy.

  3. Wind turbines need high level of maintenance.

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

Wind energy is environment-friendly. It is a renewable source of energy. Wind turbines need high level of maintenance.

Multiple choice

Sea provides us

  1. wind energy and water energy

  2. tidal energy and water energy

  3. tidal energy and wave energy

  4. water energy and tidal energy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

We get tidal energy and wave energy from the sea.