MDE 13 Q5

1 / 4

What is the primary purpose of the heat exchanger in a typical diesel engine cooling water system?

D) To filter out debris from the cooling water

A) To increase the temperature of the coolant

B) To separate oil from the cooling water

C) To transfer heat from the engine coolant to the external cooling medium

2 / 4

Why are circulation pumps used in a diesel engine cooling water system?

A) To increase the pressure in the cooling system

B) To remove air from the cooling system

C) To maintain a constant flow of coolant through the engine and heat exchanger

D) To mix the coolant with additives

3 / 4

What is the role of the thermostat in a diesel engine cooling water system?

A) To regulate the coolant flow based on temperature

C) To increase the pressure in the cooling system

D) To filter out large particles from the coolant

B) To clean the coolant

4 / 4

What is the function of the header tank in a diesel engine cooling water system?

D) To mix coolant with additives

C) To filter out impurities from the coolant

A) To store spare coolant for emergencies

B) To allow for expansion and contraction of the coolant

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