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Chemical Engineering :: Nuclear Power Engineering

  1. Thermal neutrons which are used to cause the fission of U-235 have energy __________ eV.

  2. A.
    < 0.025
    B.
    > 1
    C.
    1-25
    D.
    > 200.

  3. Which of the following types of nuclear reactors is most prone to radioactive hazards ?

  4. A.
    Pressurised water reactor
    B.
    Gas cooled reactor
    C.
    Molten sodium cooled reactor
    D.
    Boiling water reactor

  5. Thermal nuclear reactors using enriched uranium as fuel contains a maximum of __________ percent fissile material i.e. U-235.

  6. A.
    1
    B.
    2
    C.
    3
    D.
    7

  7. The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?

  8. A.
    A+Z
    B.
    A- Z
    C.
    A
    D.
    Z

  9. Which of the following is not used as a nuclear fuel cladding material ?

  10. A.
    Zircalloy
    B.
    Cadmium
    C.
    Ceramics
    D.
    Stainless steel

  11. The function of moderators in nuclear reactor is to

  12. A.
    slow down the secondary neutrons.
    B.
    absorb the secondary neutrons.
    C.
    control the chain reaction.
    D.
    none of these.

  13. Specific gravity of uranium and plutonium is about

  14. A.
    9
    B.
    13
    C.
    19
    D.
    27

  15. Pick out the wrong statement.

  16. A.
    The nucleus of a hydrogen atom is identical with a proton.
    B.
    A, β-ray particle is identical with an electron.
    C.
    Mass of an electron is about 1/1800th of the lightest nucleus.
    D.
    Positron is heavier than a proton.

  17. If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same istotope will be __________ days.

  18. A.
    5
    B.
    10
    C.
    20
    D.
    30

  19. __________ nuclear reactor does not require a heat exchanger to supply steam to power turbine.

  20. A.
    Molten sodium cooled
    B.
    Helium cooled
    C.
    Boiling water
    D.
    Pressurised water