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WorksheetsCh12 Cooling Systems
Total questions: 15
Worksheet time: 3hrs 30mins
What senses the temperature of the coolant and allows the fluid to enter or exit the radiator?
radiator hose
water pump
thermostat
radiator cap
What happens when pressure is increased in the cooling system by using a radiator cap?
increases the boiling point of the coolant
decreases the boiling point of the coolant
keeps the boiling point constant
changes the water to antifreeze ratio in the coolant
What is used to attach the radiator hose to the radiator?
clamp
glue
tape
machine screw
Approximately what temperature will the antifreeze freeze if mixed 50% water and 50%
antifreeze?
212 F (100 C)
122 F (50 C)
32 F (0 C)
-34 F (-37 C)
Which of the following is like a mini radiator to help with heating the passenger cabin?
cabin air filter
heater core
compressor
evaporator
What forces the coolant to flow throughout the engine?
air from the front of the car
water jacket
radiator fins
water pump
What is the purpose of the radiator?
remove heat from the coolant
add heat to the coolant
slow down the air through the engine compartment
keep the coolant at 195oF (91oF)
Charge-air coolers (intercoolers and aftercoolers) are air-to-air or air-to-liquid ____________.
heat collectors
heat exchangers
cold air returns
hot air returns
Cooler air is ____________, allowing more air and fuel to go into the combustion chamber
which leads to more power.
more turbulent
cloudy
less dense
denser
What is the function of active grille shutters?
to improve aerodynamics and control airflow through the radiator
slow down the vehicle
to shut off air to the passenger’s cabin
to get the engine coolant as cold as possible
What is mounted in the exhaust system, using wasted heat from the exhaust to warm up
fluids?
exhaust gas recirculation valve
exhaust gas heat recovery system
the muffler
the catalytic converter
What type of water pump is run by electronic controls, only circulating coolant when
needed?
gear driven water pump
conventional belt driven mechanical water pump
electric water pump
timing belt driven water pump
Overheating an engine can cause serious damage. One technology called fail-safe cooling
allows you to drive the vehicle if it begins to overheat. How does it work?
It deactivates alternating cylinders in the engine, pumping in air to cool them.
It transfers cool air from the air conditioning system and injects it into the radiator.
Coolant is injected directly into the cylinders.
Oil is pumped into the cylinders.
What is hose failure from electrical reactions between engine metal and coolant called?
kinetic degradation
thermal degradation
mechanical degradation
electrochemical degradation
Which if the following would be the most acidic on the pH scale?
3
6
7
10
