MDE 13 End of Unit Quiz

MDE 13 End Of Unit Quiz

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Question 2:

In a keel type cooling water system, which component is used to pump seawater through the keel cooler?

B) Centrifugal Pump

A) Expansion Tank

C) Thermostatic Valve

D) Freshwater Pump

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Question 1:

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

D) By the size of the cooler unit

A) By the color of the cooling water

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

B) By the amount of noise it produces

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Question 3:

Which component of the keel type cooling water system is used to manage the pressure and temperature of the coolant?

A) Expansion Tank

D) Thermostatic Valve

B) Keel Cooler

C) Sea Water Strainer

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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

D) It can enhance the coolant flow rate

A) It can increase the efficiency of heat transfer

B) It can decrease the temperature difference across the cooler

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Question:

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

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

C) To filter and remove debris from the cooling water

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

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

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Question 3:

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

D) To mix the coolant with additives

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

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Question:

With reference to main engine cooling water systems, why might both heaters and coolers be fitted?

A) To adjust the coolant temperature to match the engine's operational requirements and prevent freezing or overheating

D) To enable the engine to operate at a constant temperature regardless of external conditions

C) To allow for simultaneous heating and cooling of different sections of the engine

B) To increase the rate of coolant circulation and improve overall engine efficiency

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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?

D) Ignoring temperature control in the system

A) Periodic chemical analysis and adjustment of treatment levels

C) Irregular maintenance and cleaning of the cooling system

B) Using only generic chemicals without consideration for compatibility

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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?

C) The color of the coolant

B) The pressure drop across the cooler

D) The noise level of the cooler

A) The size of the cooler unit

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Question 4:

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

D) To add inhibitors to the cooling system

B) To increase the pressure of the coolant

A) To filter and remove debris from seawater

C) To regulate the temperature of the coolant

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Question 2:

What is a necessary condition for ensuring proper treatment of a fresh water cooling system?

A) Regular monitoring and maintenance of the system’s temperature

D) Neglecting system cleanliness

C) Using a one-size-fits-all approach to chemical treatment

B) Frequent replacement of system components regardless of condition

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Question 2:

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

A) To store spare coolant for emergencies

D) To mix coolant with additives

C) To filter out impurities from the coolant

B) To allow for expansion and contraction of the coolant

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