Nuclear Power Reactor Engineering Questions & Answers - Set 12 - ObjectiveBooks

Nuclear Power Reactor Engineering Questions & Answers - Set 12

Practice Test: Question Set - 12


1. Which of the following isotopes is not present in natural uranium?
    (A) U-238
    (B) U-234
    (C) U-235
    (D) U-232

2. Mass of a positron is same as that of a/an
    (A) Electron
    (B) α-particle
    (C) Proton
    (D) Neutron

3. U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about __________ percent.
    (A) 85
    (B) 50
    (C) 3
    (D) 97

4. Pick out the wrong statement.
    (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

5. Thorium-232 is converted into uranium-233 in a/an __________ nuclear reactor.
    (A) Thermal
    (B) Fast breeder
    (C) Heavy water moderated
    (D) Enriched uranium

6. Nuclear power plant in INDIA is not located at
    (A) Talcher (Orissa)
    (B) Rawatbhata (Rajasthan)
    (C) Kalpakkam (Tamilnadu)
    (D) Kaiga (Karnataka)

7. Heavy water plant (in INDIA) is not located at
    (A) Kota and Baroda
    (B) Talcher (Orissa)
    (C) Tuticorin (Tamilnadu)
    (D) Korba (Chhattisgarh)

8. The number of neutrons in the nucleus of Uranium-233 (92U233) is
    (A) 141
    (B) 92
    (C) 233
    (D) 325

9. Nuclides having the same atomic numbers are termed as
    (A) Isotopes
    (B) Isomers
    (C) Isotones
    (D) Isobars

10. A homogeneous reactor is the one, in which the
    (A) Fissile atoms are evenly distributed throughout the mass of nuclear reactor
    (B) Same substance (e.g. heavy water) is used as moderator & coolant
    (C) The fuel and the moderator is mixed to form a homogeneous material
    (D) All (a), (b) and (c)

11. The size of an atom is of the order of one
    (A) °Angstrom
    (B) Fermi
    (C) Micron
    (D) mm

12. Molten sodium is used as a coolant in a fast breeder reactor, because of its
    (A) Excellent moderating properties
    (B) Neutron breeding capability
    (C) Faster heat removal capability from the core
    (D) Capability to increase the reaction rate in the core

13. Specific gravity of uranium and plutonium is about
    (A) 8
    (B) 13
    (C) 19
    (D) 27

14. Heat is generated in a nuclear reactor (thermal) by
    (A) Combustion of a nuclear fuel e.g. uranium
    (B) Fusion of atoms of uranium
    (C) Absorption of neutrons in uranium atoms
    (D) Fission of U-235 by neutrons

15. The atomic mass of an element is fractional, because
    (A) Of uncertainty principle
    (B) It may have isobars
    (C) It contains neutrons
    (D) It may have isotopes

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