Hotel Service Unit 7 Q2 Quiz

Hotel Service Unit 7 Marine diesel oil Q2

1 / 10

What does the water crackle test help detect in fuel?

D) High sulfur content

A) Excessive sediment

B) Presence of water

C) Fuel degradation

2 / 10

What can happen if significant amounts of water are present in marine diesel oil?

A) It improves engine lubrication

B) It can cause corrosion in fuel system components

C) It increases fuel’s flash point

D) It stabilizes engine operation

3 / 10

Which of the following is a possible consequence of water contamination in marine diesel oil?

C) Improved engine cooling

D) Higher exhaust temperatures

A) Increased fuel efficiency

B) Poor combustion and reduced engine performance

4 / 10

Which of the following is a test that can indicate the presence of water in marine diesel oil?

D) Engine vibration test

C) Specific gravity test

B) Water crackle test

A) Flash point test

5 / 10

Which of the following is a possible source of fuel contamination by water on board a vessel?

C) Condensation forming in fuel tanks

A) Corrosion in fuel tanks

B) Water entering through open hatches

D) Fuel leaking into the engine room

6 / 10

Which of the following is another test that can detect water in marine diesel oil?

C) Density test

A) Viscosity test

D) Cetane number test

B) ASTM D95 distillation test

7 / 10

Which of the following is a source of water contamination in marine diesel oil?

B) Seawater entering the fuel system during bunkering

C) High fuel temperature

A) Fuel tank overfilling

D) Low engine speed

8 / 10

What is another source of water contamination in fuel on board a vessel?

B) Leaking steam pipes or cooling water systems near fuel tanks

A) Overheating of the fuel

C) Excessive fuel consumption

D) High fuel pressure

9 / 10

Which of the following is another potential consequence of water contamination in fuel?

D) Cleaner exhaust emissions

C) Reduced fuel temperature

A) Blockage of fuel filters

B) Increased fuel consumption

10 / 10

Why is the ASTM D95 test important for marine diesel oil?

B) It determines the fuel’s water content, ensuring it is within safe operational limits

C) It measures fuel density

A) It measures the fuel’s flash point

D) It checks for sulfur content

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