Renewable Energy Questions

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Very Short Answers Questions [1 Mark Questions]

Ques. As compared to traditional generators, renewable energy plants require

1. Less maintenance
2. More Uranium
3. Less fuel
4. Higher operating cost

Ans. The correct answer is a. Less maintenance

Explanation: Renewable energy facilities have far lower operating costs than typical fossil fuel generators. As a result, renewable energy plants require extremely little maintenance after installation. They use an extremely small quantity of fuel for operations.

Ques. Which of the following energy resources have been used for many decades?

1. Primary energy sources
2. Fuel cells
3. Conventional energy sources
4. Non-conventional energy sources

Ans. The correct answer is c. Conventional energy sources

Explanation: Conventional energy sources, such as coal, petroleum, and firewood, have been utilized for a long time. Non-conventional sources, on the other hand, are a very new addition to consumer consumption.

Ques. The classification of energy sources, based on usability, will be

1. Primary, secondary, and tertiary resources
2. Primary, and secondary resources
3. Primary, secondary, intermediate, and tertiary resources
4. Primary, intermediate, and secondary resources

Ans. The correct answer is d. Primary, intermediate, and secondary resources

Explanation: Based on their utility, energy resources are classed as primary, intermediate, and secondary. Primary resources are already existent in nature prior to human intervention or modification. Intermediate resources are acquired from primary resources after one or more phases of transformation. At the same time, the type of energy that is eventually delivered to the customer for use is referred to as a secondary resource.

Ques. In a Solar cell, which of the following effects is responsible for converting light energy into electrical energy?

1. Atmospheric effect
2. Photovoltaic effect
3. Physical effect
4. Magnetic effect

Ans. The correct answer is b. Photovoltaic effect

Explanation: When a photovoltaic cell is exposed to sunlight, it produces a voltage or electric current by converting light energy into electrical energy.

Ques. Which among the following is the main drawback of renewable energy?

1. Accessible only in a few places
2. Pollution
3. Unreliable supply
4. High maintenance cost

Ans. The correct answer is c. Unreliable supply

Explanation: Renewable energy generally depends on the weather for its power sources. Rain, for example, is necessary to fill dams with hydro generators and so supply energy. Wind is necessary to turn the blades of wind turbines.

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Short Answers Questions [2 Marks Questions]

Ques. Define renewable energy.

Ans. Renewable energy is defined as energy produced from natural sources that is replenished at a faster rate than it is consumed. Sunlight and wind are two examples of such continually replenishing sources. Renewable energy sources abound and are all around us.

Ques. What is geothermal energy?

Ans. Geothermal energy is a renewable energy source derived from the Earth's core. It is caused by heat created during the planet's creation and the radioactive decay of elements. This thermal energy is stored in the earth's core in the form of rocks and fluids.

Ques. Give some examples of renewable energy sources.

Ans. Some examples of renewable energy sources are

• Wind energy
• Solar energy
• Geothermal energy
• Hydropower
• Ocean energy
• Bioenergy

Ques. What is non-renewable resources of energy?

Ans. A non-renewable resource is a natural resource that cannot be renewed quickly enough by natural processes to keep up with use. Carbon-based fossil fuels are one example. With the use of heat and pressure, the original biological matter is converted into a fuel such as oil or gas.

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Long Answers Questions [3 Marks Questions]

Ques. Which renewable energy source is the best?

Ans. Although all types of renewable energy may be used, the most efficient renewable energy sources are geothermal, solar, wind, hydroelectricity, and biomass. 

• Renewable energy contributed to one-tenth of total US energy consumption in 2015. 
• Half of this was in the form of electricity. Biomass contributed the most (50%) followed by hydroelectricity (26%), and wind power (18%). 
• However, due to the availability and popularity of specific sources of renewable energy, these statistics could represent the most efficient forms as such. 
• These figures will alter as renewable energy becomes more mainstream and used internationally.

Ques. How can renewable energy benefit the environment?

Ans. Renewable energy sources, unlike fossil fuels such as oil and diesel, emit no greenhouse gases and no hazardous compounds or pollutants that might harm humans or the environment. 

• Furthermore, renewable energy sources are, as the name implies, renewable. Wind and solar electricity, for example, cannot be exhausted. We will never run out of wind or sunlight. The same is true for hydropower.
• Certain renewable energy sources, however, have inherent drawbacks. Wind and solar energy require enormous amounts of land to be able to build wind turbines or solar panels. There are several solutions to this problem, such as utilizing farmland. According to Oregon State University researchers, placing solar panels on just 1% of croplands globally would be sufficient to supply all of humanity's global electrical demands.

Ques. Will renewable energy sources stop global warming?

Ans. Carbon dioxide and other greenhouse gas emissions operate like a blanket, trapping heat, resulting in more frequent storms, drought, sea level rise, and even animal extinction. 

• The electrical industry accounts for 29% of emissions in the United States. 
• Replacing these fossil fuels with renewable energy sources will minimize harmful emissions into the environment and the hazards connected with global warming.
• Renewable energy sources emit minimal to no pollution during the manufacture, installation, operation, and decommissioning processes.

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Very Long Answers Questions [5 Marks Questions]

Ques. Differentiate between renewable and non-renewable energy resources.

Ans. The difference between renewable and non-renewable energy resources is given below

Ques. What are the benefits of renewable energy?

Ans. The benefits of renewable energy are

• Renewable energy is a significant partner in mitigating society's environmental impact and helping minimize the consequences of climate change because it does not release greenhouse gases during its production.
• Unlike traditional energy sources (coal, gas, oil, or nuclear energy), renewable energy sources are inexhaustible and adapt to natural cycles. As a result, it is essential to develop a sustainable energy system that promotes local growth without harming future generations' future.
• The cost of producing energy from renewable sources is foreseeable and can be planned for, in contrast to the cost of producing energy from fossil fuels, which is continually fluctuating and dependent on external factors.
• The International Renewable Energy Agency (IRENA) estimates that increasing the global renewable energy quota to 36% will result in an increase in employment in the industry from 9.2 million to more than 24 million people by 2030. Additionally, the world economy would expand by 1.1% or 1.3 trillion dollars.

Ques. What is the government initiative for the promotion of renewable energy?

Ans. The government has taken several steps for the promotion of renewable energy. These are

• FDI (Foreign Direct Investment) is permitted at up to 100 percent through automatic routes.
• Waiver of interstate transmission system (ISTS) costs for interstate sales of solar and wind electricity for projects to be completed by June 30th, 2025.
• Declaration of Renewable Purchase Obligation (RPO) trajectory until 2022.
• Establishment of Ultra Mega Renewable Energy Parks to give land and transmission to renewable energy developers on a plug-and-play basis.
• Laying new transmission lines and building new substation capacity for renewable energy evacuation.
• Establishment of a Project Development Cell to attract and facilitate investments.

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