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Vapaour Compression Cycle

Total questions: 21

Worksheet time: 13mins

Name
Class
Date
1.

What is used as the channel for the refrigerant controller in the refrigerator?

a)

Spring

b)

Capillary tube

c)

Fan

d)

Pipeline

2.

Under what circumstances does the refrigerant in the refrigerator evaporate?

a)

Pressure increases

b)

Temperature decreases

c)

Temperature increases

d)

Pressure decreases

3.

In which device does the refrigerant in the refrigerator convert into liquid?

a)

Refrigerant Controller

b)

Condenser

c)

Evaporator

d)

Compressor

4.

The function of the defrosting tube in the refrigerator is?

a)

Remove frost

b)

Evaporate and remove the water after defrosting

c)

Heating tube

d)

Remove moisture

5.

What is the advantage of a variable speed compressor over a single speed compressor?

a)

Increased durability

b)

Reduced noise

c)

Increased speed

d)

At least 40% reduction in consumption

6.

What is the purpose of the condenser in a refrigerator?

a)

To convert refrigerant into liquid

b)

To control the flow of refrigerant

c)

To increase the pressure of refrigerant

d)

To reduce the temperature of refrigerant

7.

How does the evaporator in a refrigerator function?

a)

By converting refrigerant into liquid

b)

By converting refrigerant into gas

c)

By controlling the flow of refrigerant

d)

By increasing the pressure of refrigerant

8.

What is the role of the compressor in a refrigerator?

a)

To convert refrigerant into liquid

b)

To control the flow of refrigerant

c)

To increase the pressure of refrigerant

d)

To increase the temperature of refrigerant

9.

What is the function of the evaporator in a refrigerator?

a)

By converting refrigerant into liquid

b)

By converting refrigerant into gas

c)

By controlling the flow of refrigerant

d)

By increasing the pressure of refrigerant

10.

What is the purpose of the refrigerant controller in a refrigerator?

a)

Spring

b)

Capillary tube

c)

Fan

d)

Pipeline

11.

What is the role of the condenser in a refrigerator?

a)

To convert refrigerant into liquid

b)

To control the flow of refrigerant

c)

To increase the pressure of refrigerant

d)

To reduce the temperature of refrigerant

12.

What is the purpose of the thermostat in a refrigerator?

a)

To control the temperature inside the refrigerator

b)

To increase the pressure of refrigerant

c)

To convert refrigerant into liquid

d)

To reduce the temperature of refrigerant

13.

How does the capillary tube in a refrigerator function?

a)

By converting refrigerant into liquid

b)

By controlling the flow of refrigerant

c)

By increasing the pressure of refrigerant

d)

By reducing the temperature of refrigerant

14.

What is the role of the fan in a refrigerator?

a)

To convert refrigerant into liquid

b)

To control the flow of refrigerant

c)

To increase the pressure of refrigerant

d)

To reduce the temperature of refrigerant

15.

Compressor converts low temperature gas into ……………… ?

a)

High temperature gas

b)

Low temperature gas

c)

Zero pressure gas

d)

Low pressure gas

16.

Which statement is NOT true about the working of refrigerator?

a)

Condenser converts gas into liquid

b)

Capillary device is used to reduce the temperature and pressure

c)

Evaporator reduces the temperature of the gas flowing through it

d)

Compressor uses a motor to generate high pressure gas

17.
Which is not involved in defrost system?
a)
Heater
b)
Timer
c)
Compressor
18.
The purpose of the defrost timer is to
a)
regulate the frequency of the defrost cycle
b)
turn refrigerator off when temperature is reached
c)
always apply voltage to the heater
d)
act as a fuse
19.

Vegetables need to be stored at the

a)

top shelves (shelf 1 or 2)

b)

middle shelf

c)

lowest shelf

20.

The refrigerant gas after compressed in compressor goes to

a)

Freezer Compartment

b)

Thermostat

c)

Condenser

d)

Atmosphere

21.

Use of CFCs are banned because

a)

It causes Ozone Deptetion, in the event of leakages to atmospher

b)

It is flammable

c)

It is chemicall not stable

d)

It is toxic