All Real Engines Are Less Efficient Than the Carnot Engine

question 54

Multiple Choice

All real engines are less efficient than the Carnot engine because

• A) they do not operate through the Otto cycle.
• B) they do not operate through a reversible cycle.
• C) the working substance does not maintain a constant volume through the cycle.
• D) the working substance does not maintain a constant pressure through the cycle.
• E) the working substance does not maintain a constant temperature through the cycle.

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Definitions:

Contribution Format

A type of income statement format that separates fixed costs from variable costs to highlight the contribution margin.

Income Statement

A financial document that provides a summary of a company’s revenues, expenses, and profits/losses over a specific period, showing how the revenue is transformed into net income.

Variable Expenses

Expenses that vary directly with the amount of production or activity level.

Fixed Expenses

Costs that do not fluctuate with the volume of production or sales, remaining constant over a period, such as rent, salaries, and insurance premiums.