The Efficiency of an Engine

question 47

Multiple Choice

The efficiency of an engine

• A)can have units of Joules.
• B)is always less than 100%.
• C)is the ratio of the work done by the engine to the heat exhausted to the low temperature reservoir.
• D)is the ratio of the heat exhausted to the low temperature reservoir to the work done by the engine.

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Definitions:

Disinflation

A reduction in the rate of inflation, characterized by a slowing down in the rate at which prices increase over time.

Short-Run Phillips Curve

A graphical representation that shows an inverse relationship between the rate of inflation and the unemployment rate in the short-term.

World Commodity Prices

The prices of goods such as oil, gold, coffee, etc., that are traded internationally and can fluctuate due to supply and demand dynamics.

Disinflation

A reduction in the rate of inflation; a slowdown in the rate at which prices increase over time.