MDE 13 End of Unit Quiz

MDE 13 End Of Unit Quiz

1 / 12

Question 1:

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

B) Clogged or fouled cooling passages

A) Increased air pressure in the engine room

C) High coolant flow rate

D) Improperly aligned engine components

2 / 12

Question 2:

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

B) Pressure gauge

A) Thermometer

D) Thermocouple or temperature sensor

C) Flow meter

3 / 12

Question 3:

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

D) Enhances the heat exchange process

C) Decreases the effectiveness of temperature regulation

A) Improves coolant flow rate

B) Increases the temperature drop across the cooler

4 / 12

Question 3:

Which condition contributes to the effectiveness of a fresh water cooling system treatment program?

D) Treating the system only when visible problems occur

C) Relying solely on automatic dosing systems without manual checks

B) Allowing excessive fouling and debris to accumulate in the system

A) Ensuring the use of treatment chemicals that are compatible with the system

5 / 12

Question 5:

What is the purpose of the cooling water pump in a diesel engine cooling water system?

D) To remove impurities from the coolant

C) To ensure the circulation of cooling water through the engine and heat exchanger

B) To maintain pressure in the cooling system

A) To mix coolant with additives

6 / 12

Question 5:

In a keel type cooling water system, which component ensures that the engine's freshwater cooling circuit is effectively isolated from the seawater system?

C) Centrifugal Pump

A) Heat Exchanger

D) Freshwater Pump

B) Keel Cooler

7 / 12

Question 4:

What is the primary purpose of the seawater strainer in a keel type cooling water system?

A) To filter and remove debris from seawater

C) To regulate the temperature of the coolant

D) To add inhibitors to the cooling system

B) To increase the pressure of the coolant

8 / 12

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

B) The pressure drop across the cooler

C) The color of the coolant

9 / 12

Question 4:

To maintain an effective fresh water cooling system treatment program, it is important to:

D) Avoid routine checks of chemical levels

A) Regularly clean the system to prevent buildup of contaminants

C) Allow temperature variations without monitoring

B) Use high doses of chemicals sporadically

10 / 12

What is the primary function of the inhibitor used in fresh water cooling treatment?

B) To prevent the formation of scale and corrosion

C) To improve the aesthetic appearance of the coolant

D) To alter the color of the cooling system

A) To increase the flow rate of the coolant

11 / 12

Question:

With reference to main engine cooling water systems, what is the primary purpose of the header tank?

C) To filter and remove debris from the cooling water

B) To provide a reservoir for excess coolant and maintain system pressure

D) To regulate the temperature of the seawater entering the cooling system

A) To cool the engine by circulating coolant through the heat exchanger

12 / 12

Question 4:

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

D) It can enhance the coolant flow rate

C) It can cause localized overheating and reduced cooling efficiency

A) It can increase the efficiency of heat transfer

B) It can decrease the temperature difference across the cooler

Your score is