​What Is a Disadvantage of Large-Scale Hydropower

question 28

Multiple Choice

​What is a disadvantage of large-scale hydropower?

• A) ​There is a low net energy yield.
• B) ​There are high CH4 emissions from rapid biomass decay in shallow tropical reservoirs.
• C) ​Most of the potential energy has already been tapped.
• D) ​The generated electricity comes at a relatively high cost.
• E) ​There are high emissions of CO2 and other air pollutants in temperate areas.

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Definitions:

Primary Line Voltage

The voltage applied to the primary winding of a transformer or the initial voltage in a power distribution line before any step up or step down transformations.

Secondary Line Voltage

The voltage present in the output (secondary) side of a transformative device, typically less than the input (primary) voltage.

Turns Ratio

The ratio of the number of turns in the primary winding to the number of turns in the secondary winding of a transformer.

Primary Line Current

The electric current flowing through the primary winding or circuit of a transformer or other electrical device.