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Home Mechanical Engineering Steam Nozzles and Turbines See What Others Are Saying!
  • Question
  • The friction present between the steam and the nozzle surfaces reduces the heat drop by


  • Options
  • A. 10 to 15 percent
  • B. 15 to 25 percent
  • C. 25 to 40 percent
  • D. 40 to 60 percent

  • Correct Answer
  • 10 to 15 percent 


  • More questions

    • 1. Glazing in grinding wheels __________ cutting capacity.

    • Options
    • A. has no effect on
    • B. increase
    • C. decrease
    • Discuss
    • 2. The fire tubes in a Cochran boiler usually have __________ diameter.

    • Options
    • A. 6.25 mm
    • B. 62.5 mm
    • C. 72.5 mm
    • D. 92.5 mm
    • Discuss
    • 3. The entropy is a point function and thus it is a property of the same.

    • Options
    • A. Correct
    • B. Incorrect
    • Discuss
    • 4. Thermal diffusivity is a

    • Options
    • A. function of temperature
    • B. physical property of a substance
    • C. dimensionless parameter
    • D. all of these
    • Discuss
    • 5. The centre of gravity a T-section 100 mm x 150 mm x 50 mm from its bottom is

    • Options
    • A. 50mm
    • B. 75mm
    • C. 87.5mm
    • D. 125mm
    • Discuss
    • 6. Holes are machined by push broaches only for sizing.

    • Options
    • A. Correct
    • B. Incorrect
    • Discuss
    • 7. A file removes the metal during

    • Options
    • A. forward stroke
    • B. return stroke
    • C. both forward and return strokes
    • D. none of these
    • Discuss
    • 8. The coefficient of discharge is the ratio of dieoretical discharge to the actual discharge through an orifice.

    • Options
    • A. True
    • B. False
    • Discuss
    • 9. Two equal and opposite parallel forces whose lines of action are different form a couple.

    • Options
    • A. Correct
    • B. Incorrect
    • Discuss
    • 10. Throttle governing of steam engines is a method of controlling the engine output by varying

    • Options
    • A. volume of intake steam
    • B. pressure of intake steam
    • C. temperature of intake steam
    • D. all of these
    • Discuss


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