MDE 13 End of Unit Quiz

MDE 13 End Of Unit Quiz

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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

B) To maintain pressure in the cooling system

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

A) To mix coolant with additives

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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

D) By the size of the cooler unit

A) By the color of the cooling water

B) By the amount of noise it produces

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Question 3:

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

B) An increase in the cooling system pressure

A) A decrease in coolant flow rate

D) A malfunctioning thermostat

C) Effective heat removal by the cooler

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Question 3:

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

C) Decreases the effectiveness of temperature regulation

A) Improves coolant flow rate

B) Increases the temperature drop across the cooler

D) Enhances the heat exchange process

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Question:

Which of the following safety considerations is most important when handling inhibitors used in cooling systems?

B) Ensuring inhibitors are mixed with the fuel before use

A) Wearing personal protective equipment (PPE) such as gloves and goggles

D) Ignoring the manufacturer's instructions for handling and storage

C) Storing inhibitors in an open container to facilitate ventilation

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Question 4:

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

A) Regularly clean the system to prevent buildup of contaminants

C) Allow temperature variations without monitoring

B) Use high doses of chemicals sporadically

D) Avoid routine checks of chemical levels

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Question 5:

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

D) Properly functioning pumps

B) Fouled or dirty cooler surfaces

A) Increased coolant temperature

C) Well-maintained gaskets and seals

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Question 1:

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

A) Increased air pressure in the engine room

D) Improperly aligned engine components

C) High coolant flow rate

B) Clogged or fouled cooling passages

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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?

A) Heat Exchanger

C) Centrifugal Pump

B) Keel Cooler

D) Freshwater Pump

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Question 1:

Which of the following is a key condition for the effectiveness of a fresh water cooling system treatment program?

A) Periodic chemical analysis and adjustment of treatment levels

B) Using only generic chemicals without consideration for compatibility

D) Ignoring temperature control in the system

C) Irregular maintenance and cleaning of the cooling system

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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

B) It can decrease the temperature difference across the cooler

D) It can enhance the coolant flow rate

A) It can increase the efficiency of heat transfer

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Question 4:

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

D) The noise level of the cooler

C) The color of the coolant

A) The size of the cooler unit

B) The pressure drop across the cooler

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