MDE 13 Q5

1 / 4

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

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

D) To mix the coolant with additives

A) To increase the pressure in the cooling system

B) To remove air from the cooling system

2 / 4

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

D) To mix coolant with additives

A) To store spare coolant for emergencies

C) To filter out impurities from the coolant

B) To allow for expansion and contraction of the coolant

3 / 4

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

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

D) To filter out debris from the cooling water

4 / 4

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

B) To clean the coolant

C) To increase the pressure in the cooling system

D) To filter out large particles from the coolant

A) To regulate the coolant flow based on temperature

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