In a Steam Engine,steam at 140°C in a Turbine Does

question 38

Multiple Choice

In a steam engine,steam at 140°C in a turbine does work on an external system,and the steam leaves the turbine at 100°C.The efficiency of the steam engine is 5%.The relevant physical principle is

• A)the first law of thermodynamics.
• B)the second law of thermodynamics.
• C)specific heat capacity.
• D)operation of a heat pump.
• E)none of the above.

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Definitions:

Differential Revenue

The difference in revenue generated from two different business decisions, often used in managerial accounting to assess alternatives.

Opportunity Cost

The cost of an alternative that must be forgone in order to pursue a certain action or the benefits you could have received by taking an alternative action.

Opportunity Cost

The cost of forgoing the next best alternative when making a decision, representing potential benefits missed.

Differential Revenue

The additional revenue that is generated from choosing one alternative over another in decision-making processes.