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Question

Which one of the following is the largest source of electricity in India?

This question was previously asked in
CDS I 2016 English Previous Year Paper (14-Feb-2016)
The correct answer is

Thermal power plants

Understanding India's Electricity Sources

Let's look at the question about the largest source of electricity in India. India uses several different ways to generate power, each contributing differently to the total electricity supply. The question asks us to identify the single largest source among the given options.

Analyzing Electricity Generation Options in India

The options provided represent major categories of power generation:

  • Hydropower plants: These generate electricity using the energy from moving water.
  • Nuclear power plants: These use nuclear reactions to produce heat, which is then converted into electricity.
  • Thermal power plants: These generate electricity by burning fuel (like coal, gas, or oil) to heat water and create steam, which drives turbines.
  • Wind energy: This is a renewable source that uses wind turbines to convert wind energy into electricity.

Identifying the Largest Electricity Source

To answer the question accurately, we need to consider the contribution of each of these sources to India's total electricity generation capacity or actual generation. Historically and currently, India's power sector is heavily reliant on one specific source among the options.

Based on available data and the structure of India's power generation mix, thermal power plants, particularly those burning coal, constitute the largest portion of the country's electricity generation. While India is expanding its renewable energy capacity like wind and solar, and has significant hydropower resources and some nuclear power, thermal power remains the dominant source.

Breakdown of Power Sources in India

Here's a general idea of the proportion of different energy sources in India's power sector. Please note that exact percentages can vary slightly over time and between different reports, but the relative ranking of major sources is quite stable.

Major Electricity Sources in India (Approximate Share)
Source Category Approximate Share (Capacity/Generation)
Thermal Power (Coal, Gas, Lignite) Largest Share (Often >50%)
Renewable Energy (Solar, Wind, Hydro > 25 MW, etc.) Significant and Growing Share
Hydropower (Large > 25 MW) Moderate Share
Nuclear Power Smaller Share

As the table illustrates, thermal power plants contribute the most to India's electricity supply compared to hydropower, nuclear power, or wind energy individually, although the overall renewable category is becoming increasingly significant.

Conclusion on India's Power Generation

Therefore, among the choices given, thermal power plants are the largest source of electricity in India.

Revision Table: India's Electricity Sources

Key Power Generation Types in India
Source Type Primary Fuel/Mechanism Contribution Level
Thermal Power Coal, Gas, Lignite, Oil Largest Contributor
Hydropower Water Flow/Dams Significant, but less than Thermal
Nuclear Power Uranium (Nuclear Fission) Minor Contributor
Wind Energy Wind Turbines Growing Renewable Source, significant but less than Thermal

Additional Information on India's Energy Mix

India is actively working towards diversifying its energy mix and increasing the share of renewable energy sources to reduce reliance on fossil fuels and combat climate change. While thermal power, especially coal-based, is currently the largest source, there is a strong policy push towards solar energy, wind energy, and other renewables. However, building new renewable capacity and integrating it into the grid takes time, and thermal power plants will likely remain a major source for the foreseeable future, albeit with a gradually decreasing proportion as renewables grow.

Understanding the different sources and their relative contributions is crucial for studying energy policy and infrastructure in India.

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