MDE 13 End of Unit Quiz

MDE 13 End Of Unit Quiz

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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

C) Effective heat removal by the cooler

D) A malfunctioning thermostat

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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?

B) Effective heat exchange

C) Blocked cooling water passages

D) Well-maintained cooling system

A) Increased coolant flow rate

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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 2:

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

A) Thermometer

C) Flow meter

D) Thermocouple or temperature sensor

B) Pressure gauge

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Question 3:

Why are circulation pumps used in a diesel engine cooling water system?

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

B) To remove air from the cooling system

D) To mix the coolant with additives

A) To increase the pressure in the cooling system

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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

D) Freshwater Pump

B) Keel Cooler

C) Centrifugal Pump

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Question 5:

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

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

A) To mix coolant with additives

D) To remove impurities from the coolant

B) To maintain pressure in the cooling system

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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

C) Storing inhibitors in an open container to facilitate ventilation

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

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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

B) Fouled or dirty cooler surfaces

D) Properly functioning pumps

C) Well-maintained gaskets and seals

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Question 3:

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

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

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

C) Relying solely on automatic dosing systems without manual checks

D) Treating the system only when visible problems occur

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Question 4:

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

C) To regulate the temperature of the coolant

D) To add inhibitors to the cooling system

A) To filter and remove debris from seawater

B) To increase the pressure of the coolant

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Question 2:

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

C) To filter out impurities from the coolant

A) To store spare coolant for emergencies

D) To mix coolant with additives

B) To allow for expansion and contraction of the coolant

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