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Worksheets

HVAC

Total questions: 13

Worksheet time: 12mins

Name
Class
Date
1.

The accumulator, if equipped, is located between:

a)

the compressor and the fixed orifice tube

b)

the compressor and the expansion valve

c)

the evaporator and the compressor

d)

the condenser and the expansion valve

2.
In a typical system, within which component would the evaporation of refrigerant take place?
a)
Condenser
b)
Receiver dryer
c)
Evaporator
d)
Compressor
3.

Which component squeezes the gas?

a)

Compressor

b)

Condenser

c)

Evaporator

d)

Thermal Xpansion Valve

4.

Where does the low pressure liquid become a gas?

a)

Evaporator

b)

Condenser

c)

TX valve

d)

Compressor

5.

In what state is the refrigerant when it exits the condenser?

a)

High pressure gas

b)

Low pressure gas

c)

High pressure liquid

d)

Low pressure liquid

6.
The __________is placed ahead of the radiator, allowing it to receive maximum air flow from vehicle movement and coolant fan operation. 
a)
condenser
b)
compressor
c)
evaporator
d)
orifice tube
7.

What does a Thermal eXpansion Valve do?

a)

Cleans, dries and filters the refrigerant

b)

It controls the quantity of refrigerant entering the evaporator

c)

Allows for an increase in pressure and temperature prior to entering the condenser

d)

It acts as a safety device if the compressor is over pressuring the system

8.

The main components of the Air conditioning system are

a)

Thermistor, condenser, flow control and an evaporator.

b)

Fan blower, condenser, flow control and an evaporator.

c)

Compressor, condenser, TXV and an evaporator.

d)

Drainage, condenser, flow control and an evaporator.

9.

Where would you expect to find a high pressure liquid within an AC system?

a)

Between the compressor and the Thermal Xpansion Valve

b)

Between the Thermal Xpansion Valve and the Evaporator

c)

Between the compressor and the condenser

d)

Between the Condenser and the Thermal Xpansion Valve

10.

If contamination within an air conditioning system is suspected and a flushing procedure is to be carried out what component should also be changed?

a)

Compressor

b)

Receiver Drier

c)

Thermal Xpansion Valve

d)

Condenser

11.
The Compressor discharge hose uses a _____________ diameter than the suction hose.
a)
larger
b)
smaller
c)
identical
d)
opposite
12.

- a chemical compound used in an A/C system to remove heat from the evaporator and transfer it to the condenser.

a)

refrigerant

b)

coolant

c)

hydraulic oil

d)

anti-freeze

13.

Heat will always travel:

a)

in a straight line

b)

from top to bottom

c)

from hot to cold

d)

from cold to hot