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Fuel Oil System

CBT 71 questions

First 5 of 71 questions — with answers

The correct answer is marked. Unlock the rest to study the whole test, online or offline.

  1. Question 1

    Biodiesel is being proposed as an alternative fuel for use in marine diesel engines. Which one of the options best describes biodiesel that can be used in an unmodified diesel engine?
    • A blend of petroleum based diesel fuel and less than 20 % bio fuel.
    • A pure product of hydrocarbon based oil refining.
    • A pure product from the processing of vegetable crops.
    • A blend of petroleum based fuel and water.

  2. Question 2

    "Turbulence" is the term used to describe the movement of the charge air in a diesel engine cylinder. Which one of the following options best describes a feature which helps in generating turbulence?
    • The geometry of air inlet ports and valves.
    • The combustion chamber volume.
    • The piston crown material.
    • The length of the charge air receiver.

  3. Question 3

    Blended fuel is the term applied to those fuels which are normally produced by mixing which two of the following categories of fuel?
    • Marine residual fuels.
    • Marine distillate fuel.
    • Cargo boil off gas.
    • Biodiesel.

  4. Question 4

    Combustion of fuel oil can be considered to be an energy conversion process. Which of the following options best describes the conversion?
    • Chemical to heat energy.
    • Heat to mechanical energy.
    • Chemical to mechanical energy.
    • Heat to chemical energy.

  5. Question 5

    Dual fuel diesel engines which use gas and fuel oil are used on some ships. Select the option which best describes one of the methods of operation of the fuel systems for these engines:
    • Low pressure gas is used as the main fuel with fuel oil used to ignite it.
    • High pressure gas is added to the fuel oil and both injected into the cylinder together.
    • Low pressure gas and fuel oil are injected into the cylinder separately.
    • High pressure gas is used as fuel when fuel oil is not available.

Preview — 5 of 71 questions

You are seeing the first 5 questions with answers. Unlock the remaining 66 to study the whole test — online or offline.

About this CBT test

Fuel Oil System is a CBT test with 71 questions and verified answers. Common topics include: diesel engine, fuel injection, high pressure, boiler burner, engines operate, oil, system, control.

You can practise the free questions online — one at a time, with the correct answer — or unlock the whole test and download it to study offline, without internet.

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