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Lecture 4

Authored by Lidiya Jose

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Lecture 4
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the second law of thermodynamics state about heat flow?

Heat cannot flow spontaneously from cold to hot.

Heat can only flow in a closed system.

Heat can flow spontaneously from cold to hot.

Heat flows without the need for work.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Who described the operating principle of an ideal heat engine mathematically?

Isaac Newton

Sadi Carnot

Albert Einstein

James Clerk Maxwell

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a heat pump primarily used for?

To cool the air only.

To generate electricity.

To heat a space.

To transfer heat from a high temperature to a low temperature.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the reversed Carnot cycle, what is the function of a Carnot refrigerator?

To cool the refrigerant.

To convert work into heat.

To move heat from a colder area to a warmer one.

To generate electricity.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the throttling valve in a refrigeration cycle?

To maintain a pressure differential.

To cool the refrigerant.

To heat the refrigerant.

To increase the pressure of the refrigerant.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does COP stand for in refrigeration systems?

Coefficient of Performance

Control of Pressure

Constant Operating Pressure

Cooling Output Power

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a type of refrigeration system?

Solar Refrigeration System

Chemical Refrigeration System

Thermal Expansion System

Mechanical-Compression Refrigeration System

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