Which of the Following Is the Main Reason for the Fact

question 49

Multiple Choice

Which of the following is the main reason for the fact that hydroelectric power plants are far more efficient than coal- fired electric power plants?

• A) Hydroelectric plants have far fewer moving parts.
• B) Coal is only partially combustible, due to the presence of large amounts of impurities.
• C) Since the hydroelectric plant is not a heat engine, it is not restricted by the second law of thermodynamics.
• D) The law of conservation of energy tells us that heat engines, such as hydroelectric plants, are more efficient than other forms of energy conversion.
• E) Actually, hydroelectric plants are not significantly more efficient than coal- fired plants.

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Definitions:

Market System

A market system is an economic system in which decisions regarding investment, production, and distribution are based on supply and demand.

Circular Flow Model

An economic model that depicts how money and products move through an economy, showing the interactions between households and businesses.

Resource Markets

Markets where productive resources (like labor, capital, and raw materials) are bought and sold.

Products

Goods or services that are created through a process of production and offered in the market to satisfy consumer needs or wants.