MDE 13 Q6

1 / 10

Question 5:

What is the impact of low coolant flow rate on the performance of a diesel engine water cooler?

C) Improved pressure drop across the cooler

D) Increased coolant temperature at the cooler outlet

B) Decreased temperature difference across the cooler

A) Increased heat transfer efficiency

2 / 10

Question 4:

How can an airlock in the cooling system affect the performance of a diesel engine water cooler?

C) It can cause localized overheating and reduced cooling efficiency

A) It can increase the efficiency of heat transfer

D) It can enhance the coolant flow rate

B) It can decrease the temperature difference across the cooler

3 / 10

Question 4:

Which parameter is essential for evaluating the efficiency of a diesel engine water cooler, in addition to temperature difference?

A) The size of the cooler unit

D) The noise level of the cooler

C) The color of the coolant

B) The pressure drop across the cooler

4 / 10

Question 1:

How is the performance of a diesel engine water cooler typically measured?

C) By the temperature difference between the inlet and outlet water

A) By the color of the cooling water

B) By the amount of noise it produces

D) By the size of the cooler unit

5 / 10

Question 1:

What could be a cause of decreased performance in a diesel engine water cooler?

D) Improperly aligned engine components

C) High coolant flow rate

B) Clogged or fouled cooling passages

A) Increased air pressure in the engine room

6 / 10

Question 2:

Which condition might result in a water cooler showing a higher-than-normal temperature difference across its inlets and outlets?

C) Blocked cooling water passages

B) Effective heat exchange

A) Increased coolant flow rate

D) Well-maintained cooling system

7 / 10

Question 2:

Which instrument is commonly used to measure the temperature difference across a diesel engine water cooler?

C) Flow meter

D) Thermocouple or temperature sensor

A) Thermometer

B) Pressure gauge

8 / 10

Question 5:

Which maintenance issue could cause a water cooler to exhibit higher pressure drops and reduced performance?

B) Fouled or dirty cooler surfaces

D) Properly functioning pumps

C) Well-maintained gaskets and seals

A) Increased coolant temperature

9 / 10

Question 3:

What impact does a malfunctioning thermostat have on the performance of a diesel engine water cooler?

A) Improves coolant flow rate

C) Decreases the effectiveness of temperature regulation

B) Increases the temperature drop across the cooler

D) Enhances the heat exchange process

10 / 10

Question 3:

What does a high temperature drop across the water cooler indicate?

A) A decrease in coolant flow rate

D) A malfunctioning thermostat

B) An increase in the cooling system pressure

C) Effective heat removal by the cooler

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