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  1. Which of the following enters the super heater of a boiler ?
  2. A.
    Cold water
    B.
    Hot water
    C.
    Wet steam
    D.
    Super-heated steam

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  3. Water is supplied to a boiler
  4. A.
    at atmospheric pressure
    B.
    at slightly more than atmospheric pressure
    C.
    at 100 cm/kg2
    D.
    at more than the steam pressure on the boiler

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  5. As steam expands in turbine
  6. A.
    its pressure increases
    B.
    its pressure increases
    C.
    its boiling point increases
    D.
    its temperature increases

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  7. Burning of low grade fuel can be improved by
  8. A.
    Blending with better quality
    B.
    Oil assisted ignition
    C.
    Pulverizing
    D.
    Any of the above

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  9. When pulverized fuel is not used, the equipment used for supplying coal to the boiler is
  10. A.
    Heater
    B.
    Stoker
    C.
    Burner
    D.
    Skip hoist

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  11. The p-region has a greater concentration of __________ as compared to the n-region in a P-N junction.
  12. A.
    holes
    B.
    electrons
    C.
    both holes & electrons
    D.
    phonons

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  13. A p-type semiconductor material is doped with ____________ impurities whereas a n-type semiconductor material is doped with __________ impurities
  14. A.
    acceptor, donor
    B.
    acceptor, acceptor
    C.
    donor, donor
    D.
    donor, acceptor

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  15. In the p & n regions of the p-n junction the _________ & the ___________ are the majority charge carriers respectively.
  16. A.
    holes, holes
    B.
    electrons, electrons
    C.
    holes, electrons
    D.
    electrons, holes

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