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Power Plant Engineering - section-1
  1. The coolant used in boiling water reactor is

    2. A.

     CO2
    B.

     Pressurised water
    C.

     Mixture of water and steam
    D.

     Liquid metal

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  2. A moderator

    3. A.

     Absorbs neutrons
    B.

     Does not absorb neutrons
    C.

     Accelerates neutrons
    D.

     None of these

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  3. Pressurized water reactor is designed

    4. A.

     For boiling pi water in the core
    B.

     To use liquid sodium metal as coolant
    C.

     To use intermediate coolant
    D.

     To prevent the water coolant from boiling in the core

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  4. The efficiency of a nuclear power plant in comparison to a conventional thermal power plant is

    5. A.

     Same
    B.

     More
    C.

     Less
    D.

     May be less or mote depending on size

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  5. Effective moderators are those materials which contain

    6. A.

     Light weight atoms
    B.

     Heavy weight atoms
    C.

     Critical atoms
    D.

     Zero weight atoms

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  6. Isotopes of same elements have

    7. A.

     Same atomic number and different masses
    B.

     Same chemical properties but different atomic numbers
    C.

     Different masses and different atomic numbers
    D.

     Different chemical properties and same atomic numbers

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  7. Boiling water reactor uses the following as moderator, coolant and working fluid

    8. A.

     Ordinary fluid
    B.

     Heavy water
    C.

     Molten lead
    D.

     Hydrogen gas

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  8. Gas cooled reactor uses following materials as moderator, and coolant

    9. A.

     Graphite, CO2
    B.

     Graphite, air
    C.

     Heavy water, CO2
    D.

     Lead, H2

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  9. Amongst the following, the fissionable materials are

    10. A.

     U₂₃₃ and Pu₂₂₉
    B.

     U₂₃₁ and Pu₂₃₃
    C.

     U₂₃₅ and Pu₂₃₅
    D.

     U₂₃₈ and Pu₂₃₉

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  10. The control rods in the control system of nuclear reactors are used to

    11. A.

     Absorb excess neutrons
    B.

     Control fuel consumption
    C.

     Control temperature
    D.

     All of these

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