Heat engines and heat pumps

Heat engines and heat pumps

University

10 Qs

quiz-placeholder

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Heat engines and heat pumps

Heat engines and heat pumps

Assessment

Quiz

Physics

University

Hard

Created by

Shekhar Satpute

Used 6+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

How does your refrigerator (Jääkaappi) work?

Moves heat from inside the fridge to the room

Blows cold air into the fridge

Uses convection cells

It generates cold air

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a fridge the condenser coils are

inside the fridge

outside the fridge

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a fridge the evaporator coils are

inside the fridge

outside the fridge

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The temperature of the gas coming into the condenser coils is

the same as the surroundings

greater than the surroundings

less than the surroundings

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The expansion device on a fridge

decreases the temperature of the refrigerant liquid leaving the condenser

increases the temperature of the refrigerant liquid leaving the condenser

decreases the temperature of the refrigerant gas leaving the condenser

increases the temperature of the refrigerant gas leaving the condenser

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The main purpose of any heat engine is ........................................... . 

To convert heat energy into movement, W.

To convert heat energy into internal energy, W.

To convert heat energy into work, W.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

No engine can transfer all the input heat energy into useful work. Some energy is transferred to the surroundings. Which thermodynamic law is this?

1st Law

2nd Law

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