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Home ‣ Mechanical Engineering ‣ IC Engines and Nuclear Power Plants Comments
  • Question

  • In a four stroke cycle diesel engine, the exhaust valve


  • Options
  • A. opens at 30° before bottom dead cnetre and closes at 10° after top dead centre
  • B. opens at 30° after bottom dead centre and closes at 10° before top dead centre
  • C. opens at bottom dead centre and closes at top dead centre
  • D. may open and close anywhere

  • Correct Answer
  • opens at 30° before bottom dead cnetre and closes at 10° after top dead centre 

    • IC Engines and Nuclear Power Plants problems

    Search Results

    • 1. The maximum propulsive efficiency of a turbo-jet engine is at a speed of

    • Options
    • A. 1000 km/h
    • B. 2000 km/h
    • C. 2400 km/h
    • D. 3000 km/h
      • Discuss
    • 2. Uranium has isotopes

    • Options
    • A. U234
    • B. U235
    • C. U238
    • D. all of these
      • Discuss
    • 3. The advancing of spark timing in spark ignition engines will __________ knocking tendency.

    • Options
    • A. increase
    • B. reduce
    • C. not effect
      • Discuss
    • 4. The colour of exhaust from diesel engine is generally

    • Options
    • A. white
    • B. bluish
    • C. black
    • D. violent
      • Discuss
    • 5. The theoretically correct mixture of air and petrol is

    • Options
    • A. 10:1
    • B. 15:1
    • C. 20:1
    • D. 25:1
      • Discuss
    • 6. In qualitative governing, the quantity of fuel is varied to suit the load on the engine and the total charge of air is altered.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 7. An atom bomb utilises uncontrolled nuclear fission.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. A two stroke cycle engine gives __________ mechanical efficiency than a four stroke cycle engine.

    • Options
    • A. higher
    • B. lower
      • Discuss
    • 9. Light weight substances can not be effective moderators.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. Morse test is used to determine the I.P. of a

    • Options
    • A. single cylinder petrol engine
    • B. four stroke engine
    • C. single cylinder diesel engine
    • D. multi-cylinder engine
      • Discuss

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