chapter 12 test

name

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

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

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

• a. clamp
• b. glue
• c. tape
• d. machine screw

Approximately what temperature will the antifreeze freeze if mixed 50% water and 50% antifreeze?

• a. 212ºF (100ºC)
• b. 122ºF (50ºC)
• c. 32ºF (0ºC)
• d. -34ºF (-37ºC)

Which of the following is like a mini radiator to help with heating the passenger cabin?

• a. cabin air filter
• b. heater core
• c. compressor
• d. evaporator

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

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 (91ºC)

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

Cooler air is ____________, allowing more air and fuel to go into the combustion chamber which leads to more power.

• a. more turbulent
• b. cloudy
• c. less dense
• d. denser