MDE 13 End of Unit Quiz

MDE 13 End Of Unit Quiz

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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

D) Avoid routine checks of chemical levels

B) Use high doses of chemicals sporadically

C) Allow temperature variations without monitoring

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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

C) High coolant flow rate

B) Clogged or fouled cooling passages

D) Improperly aligned engine components

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Question 5:

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

D) Increased coolant temperature at the cooler outlet

C) Improved pressure drop across the cooler

B) Decreased temperature difference across the cooler

A) Increased heat transfer efficiency

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Question 3:

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

C) Relying solely on automatic dosing systems without manual checks

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

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

D) Treating the system only when visible problems occur

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Question 2:

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

D) To mix coolant with additives

C) To filter out impurities from the coolant

B) To allow for expansion and contraction of the coolant

A) To store spare coolant for emergencies

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Question 3:

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

A) A decrease in coolant flow rate

B) An increase in the cooling system pressure

D) A malfunctioning thermostat

C) Effective heat removal by the cooler

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Question 2:

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

D) Freshwater Pump

B) Centrifugal Pump

C) Thermostatic Valve

A) Expansion Tank

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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

B) By the amount of noise it produces

A) By the color of the cooling water

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Question:

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

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

B) Ensuring inhibitors are mixed with the fuel before use

C) Storing inhibitors in an open container to facilitate ventilation

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

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Question 2:

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

D) Well-maintained cooling system

B) Effective heat exchange

A) Increased coolant flow rate

C) Blocked cooling water passages

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Question 5:

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

A) Increased coolant temperature

D) Properly functioning pumps

B) Fouled or dirty cooler surfaces

C) Well-maintained gaskets and seals

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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

C) Irregular maintenance and cleaning of the cooling system

B) Using only generic chemicals without consideration for compatibility

A) Periodic chemical analysis and adjustment of treatment levels

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