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Mechanical Engineering :: Steam Nozzles and Turbines

  1. In forced circulation steam boilers, the force is applied

  2. A.

     To draw water

    B.

     To circulate water

    C.

     To drain off the water

    D.

     All of these

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  3. Pulverized fuel is used for

  4. A.

     Better burning

    B.

     More calorific value

    C.

     Less radiation loss

    D.

     Medium sized units

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  5. The fittings mounted on the boiler for its proper and safe functioning is a

  6. A.

     Water level indicator

    B.

     Pressure gauge

    C.

     Safety valve

    D.

     All of these

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  7. The relative heat absorption for successively added equal areas of boiler convection heating surfaces

  8. A.

     Increases

    B.

     Decreases

    C.

     Remain unaffected

    D.

     First increases and then decreases

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  9. The efficiency of a pressure-velocity compounded impulse turbine is __________ as compared to pressure compounded impulse turbine.

  10. A.

     Same

    B.

     Less

    C.

     More

    D.

     None of these

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  11. Willian's law states that the steam consumption per hour provided with a throttled governor is proportional to (where I.P. = Indicated power)

  12. A.

     1/(I.P)

    B.

     1/(I.P)²

    C.

     I.P.

    D.

     (I.P.)²

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  13. Blading efficiency is also known as

  14. A.

     Stage efficiency

    B.

     Diagram efficiency

    C.

     Nozzle efficiency

    D.

     None of these

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  15. Stage efficiency is also known as

  16. A.

     Diagram efficiency

    B.

     Nozzle efficiency

    C.

     Gross efficiency

    D.

     None of these

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  17. The behavior of coal in a furnace is determined by

  18. A.

     The content of sulphur

    B.

     The content of ash and heating value

    C.

     The proximate analysis

    D.

     The exact analysis

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  19. One kilowatt-hour energy is equivalent to

  20. A.

     1000 J

    B.

     360 kJ

    C.

     3600 kJ

    D.

     3600 kW/sec

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