QUIZ3_AGR318

What is the normal operating temperature for the engine?

• 50-85 degrees

• 85-100 degrees

• 100-145 degrees

• 145-190 degrees

The cooling system

• helps engine warm up / remove excessive heat

• helps the engine overheat

• control the thermostate

Write one type of cooling system you have learned in class.

Air cooled engines used what for cooling?

• coolant

• water

• antifreeze

• fins on the engine block

Choose correct statement.

• air cooled engine is an advantage in places where water is scarce

• cooling in air cooled system is uniform.

• engine with a liquid cooling system is more noisy

Name this component

• thermostat

• water jacket

• radiator

• water pump

This component is located in between radiator and water pump or it may be attached directly to the engine crankshaft. It helps to lowering the coolant's temperature. What is the component?

• thermostat

• cooling fan

• hose

• water jacket

The function of thermostat is to regulate the flow of coolant when the engine is operating. It is open when the engine is warms up. TRUE or FALSE?

• True

• False

What is the function of bypass hose?

• carry cool water and returns it to engine via water pump inlet.

• allows heated coolant to enter the top or inlet side of the radiator.

• allow coolant to flow freely into water jacket via water pump when thermostat is closed.

Failure of cooling system can cause

• damage to the engine and reducing its operating efficiency

• lead to incorrect ignition timing

• tractor maintenance costs will increase

• tractor's life expectancy will be increased