logo

CuriousTab

CuriousTab

Discussion

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

  • The knocking in spark ignition engines can be reduced by


  • Options
  • A. retarding the spark
  • B. increasing the engine speed
  • C. both (a) and (b)
  • D. none of these

  • Correct Answer
  • both (a) and (b) 

    • IC Engines and Nuclear Power Plants problems

    Search Results

    • 1. A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be

    • Options
    • A. stable under nuclear radiation
    • B. corrossion resistant
    • C. good thermal conductor
    • D. all of these
      • Discuss
    • 2. The ratio of the heat equivalent to one kW hour to the heat in fuel per B.P. hour is termed as brake thermal efficiency.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 3. Theoretically, a four stroke cycle engine should develop __________ power as that of a two stroke cycle engine.

    • Options
    • A. half
    • B. same
    • C. double
    • D. four times
      • Discuss
    • 4. In order to mix air and petrol in the required proportion and to supply it to the engine during suction stroke, then __________ is employed.

    • Options
    • A. fuel pump
    • B. injector
    • C. carburettor
    • D. none of these
      • Discuss
    • 5. The nuclear radiators produced in a reactor which must be sheilded are

    • Options
    • A. electrons
    • B. ?, ? and ? rays
    • C. neutron and gamma rays
    • D. none of these
      • Discuss
    • 6. The inlet valve of a four stroke cycle internal combustion engine remains open for

    • Options
    • A. 130°
    • B. 180°
    • C. 230°
    • D. 270°
      • Discuss
    • 7. The thermodynamic cycle on which the petrol engine works, is

    • Options
    • A. Otto cycle
    • B. Joule cycle
    • C. Rankine cycle
    • D. Stirling cycle
      • Discuss
    • 8. The working pressure and temperature inside the cylinder of an internal combustion engine is __________ as compared to a steam engine.

    • Options
    • A. low
    • B. very low
    • C. high
    • D. very high
      • Discuss
    • 9. Lubrication in I.C. engines dissipates the heat generated from the moving parts due to friction.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. If V1 is the jet velocity and V0 is the vehicle velocity, then propulsive efficiency of a turbo-jet engine is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.