logo

CuriousTab

CuriousTab

Discussion

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

  • The reference fuels for knock rating of spark ignition engines would include


  • Options
  • A. iso-octane and alpha-methyl naphthalene
  • B. normal octane and aniline
  • C. iso-octane and normal hexane
  • D. normal heptane and iso-octane

  • Correct Answer
  • normal heptane and iso-octane 

    • IC Engines and Nuclear Power Plants problems

    Search Results

    • 1. The detonation is also called knocking or pinking.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 2. The increase of cooling water temperature in petrol engine will __________ the knocking tendency.

    • Options
    • A. not effect
    • B. decrease
    • C. increase
      • Discuss
    • 3. The primary fuel used in nuclear power plants is

    • Options
    • A. U235
    • B. U238
    • C. Pu239
    • D. Pu233
      • Discuss
    • 4. The brake power of a diesel engine, keeping other parameters constant, can be increased by

    • Options
    • A. decreasing the density of intake air
    • B. increasing the temperature of intake air
    • C. increasing the pressure of intake air
    • D. decreasing the pressure of intake air
      • Discuss
    • 5. U233 is produced

    • Options
    • A. artificially
    • B. as basic raw material
    • C. when thorium is irradiated by neutrons
    • D. by fission of U238
      • Discuss
    • 6. In a four stroke cycle petrol engine, the charge is compressed when both the valves (i.e. inlet valve and exit valve) are closed,

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 7. Ordinary water is sometimes used as moderator when enriched uranium is used as a fuel in nuclear power plants.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 8. The object of supercharging the engine is

    • Options
    • A. to reduce mass ofthe engine per brake power
    • B. to reduce space occupied by the engine
    • C. to increase the power output of an engine when greater power is required
    • D. all ofthe above
      • Discuss
    • 9. The basic requirement of a good combustion chamber is

    • Options
    • A. minimum turbulence
    • B. low compression ratio
    • C. high thermal efficiency and power output
    • D. low volumetric efficiency
      • Discuss
    • 10. In a diesel engine, the duration between the time of injection and ignition, is known as

    • Options
    • A. pre-ignition period
    • B. delay period
    • C. period of ignition
    • D. burning period
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.