A Pumped-Storage System Is Where Water Is Pumped Up into an Elevated

question 14

Multiple Choice

A pumped-storage system is where water is pumped up into an elevated reservoir, and then allowed to fall to produce electricity. What is the basic reason this system is economical?

• A) surplus electricity at night is being used to pump water into reservoir.
• B) more electricity is generated than is used in pumping water into the reservoir.
• C) it is more efficient to generate electricity when it is generated with gravity.
• D) the electricity is being generated with a renewable energy resource.
• E) the electricity is being generated with a non-carbon based energy source.

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Definitions:

Average Fixed Cost

The aggregate fixed production costs per unit of output, calculated by dividing these costs by the total quantity of products made.

Bakes

The process of cooking food by dry heat, especially in an oven, often related to pastries, bread, and cakes.

Average Fixed Cost

The constant expenses linked to manufacturing, when divided by the volume of goods produced, reduce as the amount of production expands.

Mixers

Devices used to blend or mix ingredients together in cooking or industrial processes.