Nuclear Power Engineering Quiz 4
1 / 51
Thermal nuclear reactors using enriched uranium as fuel contains a maximum of _____ percent fissile material i.e. U-235?
2 / 51
Which of the following accounts for the maximum energy release in the nuclear fission process ?
3 / 51
Uranium is recovered from its ore (pitchblende) by_________?
4 / 51
Thorium-232 is converted into uranium-233 in a/an _______ nuclear reactor?
5 / 51
Which of the following is not, a fertile material ?
6 / 51
Uranium Corporation of India Limited (UCIL) engaged in the mining & concentration of uranium ore is located at________?
7 / 51
Which of the following isotopes is not present in natural uranium?
8 / 51
The size of an atom is of the order of one ___________?
9 / 51
Which of the following radiations is the least penetrating ?
10 / 51
Which of the following is a non-fissile material ?
11 / 51
?-rays emission in radioactive disintegration is always accompanied by the emission of______?
12 / 51
Which of the following types of nuclear reactors is most prone to radioactive hazards ?
13 / 51
Which of the following ores contains maximum percentage of uranium ?
14 / 51
The ratio of volume of an atom to that of its nucleus is___________?
15 / 51
Which of the following is not a naturally occurring nuclear fuel ?
16 / 51
The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is_______?
17 / 51
Thorium can be converted into U-233 in a ______ reactor?
18 / 51
Which is not a fissile nuclear material ?
19 / 51
The velocity of thermal (slow) neutrons triggering nuclear fission reaction (having energy equal to 0.025 eV) is about _______ metres/second?
20 / 51
Which is the most commonly used molten metal for cooling of nuclear reactors ?
21 / 51
Which of the following factors is the most important in the site selection for a nuclear power plant ?
22 / 51
Which of the following reactors is operated at high neutron flux and low power level ?
23 / 51
Which is used as a coolant in nuclear reactor due to its high capture cross-section ?
24 / 51
Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around ______ m/sec?
25 / 51
Which of the following is not used as a moderator in nuclear reactor ?
26 / 51
Thermal neutrons which are used to cause the fission of U-235 have energy ______ eV?
27 / 51
Unit of radioactivity is__________?
28 / 51
Use of molten metal as a coolant in fast breeder reactor helps in__________?
29 / 51
Unit of radioactivity is___________?
30 / 51
Which of the following is a fuel for a fusion reactor (thermonuclear reactor) ?
31 / 51
Thermal shield is used in high powered nuclear reactors to___________?
32 / 51
Which of the following may be used to measure the rate of nuclear disintegration ?
33 / 51
Which of the following is not used as a nuclear fuel cladding material ?
34 / 51
Which of the following is a moderating material used in nuclear reactor ?
35 / 51
Which of the following is not an ore of uranium ?
36 / 51
Which of the following is the most harmful for the human being ?
37 / 51
Which of the following is not a good moderating material ?
38 / 51
Which of the following nuclear materials is fissile ?
39 / 51
Which one is the radioactive isotope of hydrogen ?
40 / 51
Uranium percentage in monazite sand is about_________?
41 / 51
Which one is different for the neutral atoms of the isotopes of an element ?
42 / 51
What is the average life of a radioactive atom having a ?half life period? of T ?
43 / 51
Which of the following undergoes fission reaction easily ?
44 / 51
Which of the following may not need a moderator ?
45 / 51
When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as______?
46 / 51
Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor ?
47 / 51
Thorium-232 (a fertile material) on absorption of a neutron gets converted into ___________ , which is a fissile material?
48 / 51
Which is a fertile nuclear fuel ?
49 / 51
U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about ______ percent?
50 / 51
Thorium metal___________?
51 / 51
Which of the following is artificially produced as it does not occur in nature ?
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