What is Nuclear Power Reactor Engineering Questions - Set 11 - ObjectiveBooks

What is Nuclear Power Reactor Engineering Questions - Set 11

Practice Test: Question Set - 11

1. Which is not a fissile nuclear material?
    (A) U-233
    (B) U-235
    (C) U-238
    (D) Pu-239

2. The radioisotope used to study the thyroid gland is
    (A) Iodine
    (B) Cobalt
    (C) Iron
    (D) Carbon

3. Fast breeder reactors are most usable in India, because of our largest __________ deposits.
    (A) Thorium
    (B) Plutonium
    (C) Uranium
    (D) None of these

4. Which of the following is not used as a nuclear fuel cladding material?
    (A) Zircaloy
    (B) Cadmium
    (C) Ceramics
    (D) Stainless steel

5. An electron has a mass that is approximately __________ that of the proton.
    (A) 1836 (approximately)
    (B) 1/1836 (approximately)
    (C) 1

6. 75% of a radioactive element decays in 6 hours. Its half life period is __________ hours.
    (A) 3/4
    (B) 1/6
    (C) 3
    (D) 4

7. Which of the following reactors is operated at high neutron flux and low power level?
    (A) Breeder reactor
    (B) Research reactor
    (C) Heterogeneous reactor
    (D) Liquid metal (e.g., molten sodium) cooled reactor

8. Secondary cooling circuit is a must in molten sodium cooled fast breeder reactor for
    (A) Achieving high degree of superheat in the steam
    (B) Faster heat removal rate from the core
    (C) Lowering the coolant circulation pressure
    (D) Avoiding the mixing of water with radioactive sodium, as it may cause explosion

9. Absorption/scattering cross-section of an element is expressed in "barn", which is equivalent to
    (A) 10-24 cm2
    (B) 10-12 cm
    (C) 1 Angstrom
    (D) 10-24 cm

10. One 'amu' is equivalent to
    (A) 9.31 MeV
    (B) 931 eV
    (C) 931 Mev
    (D) 931 J

11. Isotopes of an element have different
    (A) Mass number
    (B) Electronic configuration
    (C) Nuclear charge
    (D) Chemical properties

12. Indian monazite sand contains __________ percent thorium.
    (A) 10
    (B) 25
    (C) 60
    (D) 90

13. An element having large number of __________ is most easily subjected to nuclear fission.
    (A) Protons
    (B) Electrons
    (C) Neutrons
    (D) Nucleons

14. Thorium metal
    (A) Resembles steel in appearance
    (B) Is less hard (in the range of silver)
    (C) Is highly ductile
    (D) All (a), (b) and (c)

15. The amount of a radioactive material (having a half life of 100 years) remaining after 400 years will be __________ of its original weight.
    (A) 1/2
    (B) 1/4
    (C) 1/8
    (D) 1/16

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