Rudolph's Engine Heating And Cooling! Trivia Quiz

20 Questions | By Ozzzmann | Last updated: Mar 21, 2022 | Total Attempts: 388

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Rudolphs review questions on heating and cooling Chap. 12

Questions and Answers

1.

100 percent antifreeze will freeze at a lower temperature than 50/50 mixture of antifreeze and water.
- A.
  
  True
- B.
  
  False
2.

The cooling system is designed to cool 100% of the heat produced by the engine.
- A.
  
  True
- B.
  
  False
3.

Heat will always flow from a hot to a cooler substance
- A.
  
  True
- B.
  
  False
4.

As the pressure of a liquid increases, the boiling point decreases
- A.
  
  True
- B.
  
  False
5.

When the thermoststat is open, it directs coolant flow through the radiator
- A.
  
  True
- B.
  
  False
6.

Air that is trapped in a cooling system will not affect the cooling capability
- A.
  
  True
- B.
  
  False
7.

In most automotive applications, the water pump is driven by the:
- A.
  
  Flywheel
- B.
  
  Camshaft
- C.
  
  Crankshaft
- D.
  
  Impeller
8.

Which of the following cooling system hoses is normally subjected to the roughest service life?
- A.
  
  Upper radiator
- B.
  
  Lower radiator
- C.
  
  Heater inlet
- D.
  
  Bypass
9.

For every one pound of pressure put on engine coolant, the boiling point of the coolant is raised about___F degrees
- A.
  
  2
- B.
  
  3
- C.
  
  4
- D.
  
  5
10.

When must a thermostat be fully opened?
- A.
  
  20 F degrees above the start to open temperature
- B.
  
  3 F degrees above or below its temperature rating
- C.
  
  3 F degrees above its temperature rating
- D.
  
  20 F degrees below the start to open temperature
11.

The typically recommended mixture of water and antifreeze is:
- A.
  
  30/70
- B.
  
  50/50
- C.
  
  40/60
- D.
  
  60/40
12.

Most manufacturers recommend that cooling systems should be drained, flushed, and filled every:
- A.
  
  Six months
- B.
  
  Year
- C.
  
  Two years
- D.
  
  Five years
13.

Technician A says an electric cooling fan may come on without the ignition being turned on. Technician B says an electric cooling fan may be controlled by the engine control computer. Who is correct?
- A.
  
  A only
- B.
  
  B only
- C.
  
  Both A and B
- D.
  
  Neither A nor B
14.

Cooling system pressure is increased by the use of a
- A.
  
  Water pump
- B.
  
  Electric fan
- C.
  
  Radiator cap
- D.
  
  Thermostat
15.

A thermostat is used in the cooling system to prevent
- A.
  
  Overheating
- B.
  
  Overcooling
- C.
  
  Both A & B are correct
- D.
  
  Neither A or B are correct
16.

Radiator design ( coolant flow ) is
- A.
  
  Cross flow
- B.
  
  Down flow
- C.
  
  Both A and B
- D.
  
  Neither A or B
17.

Heat that is hidden is called
- A.
  
  Absolute heat
- B.
  
  Warm heat
- C.
  
  Specific heat
- D.
  
  Latent heat
18.

Cooling systems are pressurized in normal operating conditions to
- A.
  
  Increase boiling point of coolant
- B.
  
  Ensure a constant flow of coolant
- C.
  
  Aid in locating leaks
- D.
  
  Minimize the formation of rust and corrosion
19.

In a typical thermostat, operation is controlled by
- A.
  
  A temperature sensitive bi-metal spring
- B.
  
  A pressure sensitive control switch
- C.
  
  A wax pellet and coil spring
- D.
  
  Coolant flow rate through the water outlet connection
20.

Technician A and B are discussing fan shrouds. Technician A says that engine can be run without the shrouds. Technician B says that the shrouds should not be removed. Which technician is correct?
- A.
  
  Technician A
- B.
  
  Technician B
- C.
  
  Both A & B
- D.
  
  Neither A or B