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IC Engines and Nuclear Power Plants problems

  • 1. The colour of exhaust from diesel engine is generally

  • Options
  • A. white
  • B. bluish
  • C. black
  • D. violent
    • Discuss
  • 2. The advancing of spark timing in spark ignition engines will __________ knocking tendency.

  • Options
  • A. increase
  • B. reduce
  • C. not effect
    • Discuss
  • 3. Uranium has isotopes

  • Options
  • A. U234
  • B. U235
  • C. U238
  • D. all of these
    • Discuss
  • 4. 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
  • 5. 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
    • 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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