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  1. In regenerative cycle, bled steam is
  2. A.
    discharged to atmosphere
    B.
    condensed in steam condenser
    C.
    used to beat feed water for boiler
    D.
    is mixed with steam supplied to turbine

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  3. Most of the generators in thermal power plants run at
  4. A.
    3000 rpm
    B.
    1500 rpm
    C.
    1000 rpm
    D.
    750 rpm

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  5. Which of the following is not the voltage at which power is usually transmitted
  6. A.
    132 kV
    B.
    66 kV
    C.
    33 kV
    D.
    20 kV

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  7. Overall thermal efficiency of a steam power station is in the range
  8. A.
    18-24%
    B.
    30-40%
    C.
    44-62%
    D.
    68-79%

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  9. What is the maximum size of steam turbine usually being installed, for thermal power plants ?
  10. A.
    120 MW
    B.
    250 MW
    C.
    500 MW
    D.
    1000 MW

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  11. Which of the following, is not a high pressure boiler ?
  12. A.
    Loeffler boiler
    B.
    Lancashire boiler
    C.
    Velox boiler
    D.
    Lamont boiler

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  13. A condenser in a thermal power plant condenses steam combing out of
  14. A.
    Boiler
    B.
    Super-heater
    C.
    Economizer
    D.
    Turbine

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  15. Permissible pH value of water for boilers is
  16. A.
    1
    B.
    7
    C.
    slightly more than 7
    D.
    10

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  17. The equipment installed in power plants to reduce air pollution due to smoke is
  18. A.
    Induced draft fans
    B.
    De-super heaters
    C.
    Electrostatic precipitators
    D.
    Re-heaters

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  19. Super heated steam is always
  20. A.
    at a temperature higher than the saturation temperature corresponding to a steam pressure
    B.
    at a pressure more than the boiler steam pressure
    C.
    separated from water particles before being supplied to turbine
    D.
    at a pressure less than the maximum cycle pressure

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