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Cooling System

Total questions: 52

Worksheet time: 30mins

Name
Class
Date
1.

1. Tech A states thermostats in automotive engine are used to adjust the temperature of the engine. Tech B states radiators absorb heat from the air to keep the engine warm. Which Tech is correct?

a)

TECH A

b)

TECH B

c)

BOTH TECHS

d)

NEITHER TECH

2.

The function of a radiator is:

a)

uses an impeller to force coolant through the engine coolant passages.

b)

stays closed until operating temperature is reached

c)

stores coolant

d)

primary heat exchanger for the vehicle engine

3.

The function of a water pump is:

a)

uses an impeller to force coolant through the engine coolant passages.

b)

stays closed until operating temperature is reached

c)

stores coolant

d)

primary heat exchanger for the vehicle engine

4.

The function of a coolant reservoir is:

a)

uses an impeller to force coolant through the engine coolant passages.

b)

stays closed until operating temperature is reached

c)

stores coolant

d)

primary heat exchanger for the vehicle engine

5.

The function of a thermostat is:

a)

uses an impeller to force coolant through the engine coolant passages.

b)

stays closed until operating temperature is reached, then allows coolant flow

c)

stores coolant

d)

primary heat exchanger for the vehicle engine

6.

If the thermostat does not open, the engine will typically:

a)

turn off

b)

overheat

c)

lose oil

d)

leak coolant

7.

if a radiator core (fin area) get clogged with dirt and debris, what is the immediate effect?

a)

poor coolant-to-air heat exchange

b)

the coolant will not flow effectively

c)

the cylinder head will warp

d)

the radiator will breach

8.

Tech A states the thermostat temperature can be adjusted to suit operational demands. Tech B states the thermostat is necessary for a vehicle to maintain operating temperature as designed.

a)

TECH A

b)

TECH B

c)

BOTH TECHS

d)

NEITHER TECH

9.

Name this part

a)

Thermostat

b)

Radiator

c)

Heater Core

d)

Radiator Cap

10.

Name this part

a)

Water Pump

b)

Radiator

c)

Thermostat

d)

Heater Core

11.

Name this part

a)

Evaporator

b)

Thermostat

c)

Heater Core

d)

Radiator

12.

In most car and truck engines what type of cooling is used?

a)

air cooling

b)

liquid cooling

13.
In a liquid cooling system they use what?
a)
fins on the block 
b)
coolant
c)
camshaft
d)
piston
14.

Engine coolant consists of ________

a)

water and antifreeze

b)

oil and antifreeze

c)

dihydrogen monoxide and ethylene glycol

d)

water only

15.

Technician A says that coolant can be a variety of colors with green and orange being common. Technician B says that coolant needs to be mixed with water to provide the best protection against freezing and boiling. Who is correct?

a)

Technician A

b)

Technician B

c)

Both Technician A and Technician B

d)

Neither Technician A nor Technician B

16.

What senses the temperature of the coolant and allows the fluid to enter or exit the radiator?

a)

radiator hose

b)

water pump

c)

thermostat

d)

radiator cap

17.

What forces the coolant to flow throughout the engine?

a)

air from the front of the car

b)

water jacket

c)

radiator fins

d)

water pump

18.

What is the purpose of the radiator?

a)

remove heat from the coolant

b)

add heat to the coolant

c)

slow down the air through the engine compartment

d)

keep the coolant at 195oF (91oF)

19.

An engine does not reach operating temperature while being driven. Which of these could be the cause?

a)

A slipping water pump belt

b)

A stuck open thermostat

c)

A stuck closed thermostat

d)

A clogged radiator passage

20.

The first thing to check during a visual inspection of the cooling system is the:

a)

Belt tension

b)

Radiator Condition

c)

Fan Condition

d)

Coolant level and condition

21.

Coolant flows into the engine, from the Radiator through this hose.

a)

upper radiator hose

b)

lower radiator hose

c)

bypass hose

d)

heater hose

22.

The _____________ controls the temperature of the engine using a wax pellet submerged in the engine coolant.

a)

thermoswitch

b)

thermostat

c)

spark plug

d)

upper radiator hose

23.

What is the common name for the device that forces coolant to circulate through the cooling system?

a)

Thermostat

b)

Radiator

c)

Water Pump

d)

Muffler Bearing Assembly

24.

This is a picture of _____________

a)

power steering hoses

b)

windshield washer fluid hoses

c)

radiator hoses

d)

fuel line hoses

25.

What is the name of this part?

a)

thermostat

b)

water pump washer

c)

lower hose cap

d)

radiator cap

26.

The typical cooling system pressure is between ___________

a)

1 and 4 PSI

b)

5 and 7 PSI

c)

15 and 18 PSI

d)

24 and 32 PSI

27.

What happens when pressure is increased in the cooling system by using a radiator cap?

a)

increases the boiling point of the coolant

b)

decreases the boiling point of the coolant

c)

keeps the boiling point constant

d)

changes the water to antifreeze ratio in the coolant

28.

What is used to attach the radiator hose to the radiator?

a)

clamp

b)

glue

c)

tape

d)

machine screw

29.

What forces the coolant to flow throughout the engine?

a)

air from the front of the car

b)

water jacket

c)

radiator fins

d)

water pump

30.

What is the purpose of the radiator?

a)

remove heat from the coolant

b)

add heat to the coolant

c)

slow down the air through the engine compartment

d)

keep the coolant at 195oF (91oF)

31.

Charge-air coolers (intercoolers and aftercoolers) are air-to-air or air-to-liquid ____________.

a)

heat collectors

b)

heat exchangers

c)

cold air returns

d)

hot air returns

32.
what will happen if there is no cooling in an engine?
a)
nothing
b)
runs better
c)
pistons swell and rotating assembly seize
d)
runs cool
33.
on s standard car and truck engine what type of cooling is used?
a)
air cooling
b)
liquid cooling
34.
In a liquid cooling system they use what?
a)
fins on the block 
b)
coolant
c)
camshaft
d)
piston
35.
Engine coolant consists of ________
a)
water and antifreeze
b)
oil and antifreeze
c)
water and stop leak
d)
water only
36.

Technician A says that coolant can be a variety of colors with green and orange being common. Technician B says that coolant needs to be mixed with water to provide the best protection against freezing and boiling. Who is correct?

a)

Technician A

b)

Technician B

c)

Both Technician A and Technician B

d)

Neither Technician A nor Technician B

37.

Cooling fins are provided in air cooling system

a)

True

b)

False

38.

The _____________ controls the temperature of the engine using a wax pellet submerged in the engine coolant.

a)

thermoswitch

b)

thermostat

c)

spark plug

d)

upper radiator hose

39.

This is a picture of _____________

a)

power steering hoses

b)

windshield washer fluid hoses

c)

radiator hoses

d)

fuel line hoses

40.

What is the name of this part?

a)

thermostat

b)

water pump washer

c)

lower hose cap

d)

radiator cap

41.

A technician says coolant mixes with engine oil to help with cooling

a)

True

b)

False

42.

What part is this?

a)

Recovery tank

b)

Radiator

c)

Heater Core

d)

Water Pump

43.

What part is this?

a)

Turbocharger

b)

Alternator

c)

Water Pump

d)

Fuel Pump

44.

The purpose of the radiator cap is to increase the pressure of your cooling system.

a)

True

b)

False

45.

The water pump on an engine is designed to

a)

keep water out of the fuel injectors.

b)

purify water and make it available to both the operator and the engine.

c)

keep water out of the oil system.

d)

circulate water through the cooling system.

46.

What is the proper ratio of ethylene glycol to water for proper freezing/boiling points of coolant?

a)

75%/25%

b)

35%/65%

c)

50%/50%

d)

90%/10%

47.

All coolants are the same except for color and 3% additives.

a)

True

b)

False

48.

What is the freezing point of water in Fahrenheit at sea level?

a)

0 degrees

b)

25 degrees

c)

32 degrees

d)

50 degrees

49.

What is the purpose of the radiator cap?

a)

Helps maintain pressure on the cooling system

b)

Lowers the boiling point of the coolant

c)

Cools the coolant

d)

None of the above

50.

Which component should you never remove on a warm/hot engine

a)

Brake fluid cap

b)

Expansion tank cap

c)

Radiator cap

d)

Oil fill cap

51.

What can transmit heat better?

a)

air

b)

liquid

52.

What does antifreeze do to water?

a)

lowers the boiling point

b)

raises the boiling point

c)

increases its viscosity

d)

decreases its viscosity

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