A Heat Engine Operates Between a High Temperature Reservoir at T_H

question 28

Multiple Choice

A heat engine operates between a high temperature reservoir at T_H and a low temperature reservoir at T_L.Its efficiency is given by 1 - T_L/T_H:

• A)only if the working substance is an ideal gas
• B)only if the engine is reversible
• C)only if the engine is quasi-static
• D)only if the engine operates on a Stirling cycle
• E)no matter what characteristics the engine has

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Definitions:

Variable

An element, feature, or factor that is likely to vary or change.

Hypothesis

A proposed explanation or assumption for a phenomenon, made as a starting point for further investigation, testable by experimentation or observation.

Operationalization

The process of defining a research variable or concept so that it can be measured or expressed quantitatively or qualitatively.

Randomization

Randomization involves assigning individuals to groups by chance processes.