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For every pound of pressure increase, water's boiling point goes up about __________________ degrees F.
 
3
 
1
 
5
 
10
A water pump normally mounts to the ________________________of the engine.
 
Front
 
Side
 
Center
 
top
____________________cooling systems are no longer used in vehicles.
Open
A cross-flow radiator has it tanks on the _____________________of the core.
sides
An electric water pump uses an impeller and a large ______________________________ motor to force coolant through the cooling system.
dc
______________________________ cooling is often used on high-performance cars, since it can provide a more uniform engine temperature
Reverse-flow
Antifreeze prevents rust and winter ______________________________ inside the cooling system.
freeze up
The thermostat ______________________________ is the temperature at which it opens to permit coolant flow.
rating
A fluid coupling fan clutch is designed to ______________________________ at higher speeds.
slip
Pressure in the cooling system raises the boiling point of coolant to between ______________________________°F and 260°F.
250
A(n) ______________________________ is a small tank placed inside the vehicle's radiator to dissipate heat from transmission fluid.
oil cooler/ transmission cooler
A water pump ______________________________ is installed between the pump and engine to prevent coolant leakage.
gasket
Large cooling ______________________________ on the cylinder are an essential feature of air cooling systems.
fins
A flex fan alters airflow in response to engine speed.
True
High thermostat heat ranges are used in modern vehicles to reduce exhaust emissions.
True
The worm drive hose clamp is seldom used in cooling systems.
False
Open cooling systems are no longer used on vehicles.
True
Air cooling systems circulate fresh air through internal engine passages to carry away engine heat.
False
The radiator's primary function is to store engine heat.
False
A block heater is often used on diesel engines to aid winter starting.
True
Liquid cooling systems are the most common for passenger cars.
True
One of the functions of antifreeze is to lubricate the water pump.
True
Some cooling systems can use plain water instead of antifreeze.
False
When a thermostat is closed, which of these permits coolant circulation through the engine?
 
Bypass valve.
 
Bypass thermostat.
 
Both of the above.
 
None of the above.
The correct coolant/antifreeze mixture for use in most vehicles is ____.
 
50% antifreeze/50% water
 
pure ethylene glycol
 
25% antifreeze/75% water
 
pure water
Typical radiator cap pressure in an automotive cooling system is ____ psi.
 
12–16
 
7–10
 
18–20
 
20–26
The temperature of the combustion flames can reach ____°F.
 
4500
 
3900
 
3200
 
2600
Which of the following is not a true statement about the functions of an engine cooling system?
 
It keeps the engine from reaching operating temperature too
 
It provides a means of warming the passenger compartment.
 
It removes engine heat.
 
It maintains a proper engine operating temperature.


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