MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
At high temperatures, which material is the best choice to be used as coolant in a nuclear reactor? |
| A. | Water |
| B. | Heavy water |
| C. | Molten Potassium |
| D. | Molten Carbon |
| Answer» D. Molten Carbon | |
| 2. |
If the number of fissions are 2.375 X 1024, what is the mass of uranium 235 isotope used? |
| A. | 789.23 g |
| B. | 879.32 g |
| C. | 926.65 g |
| D. | 980.74 g |
| Answer» D. 980.74 g | |
| 3. |
Calculate the energy released by the fission of 5 gm of 235U in kWh if energy released per fission is 200 MeV. |
| A. | 1.13 X 10<sup>5</sup> kWh |
| B. | 2.65 X 10<sup>5</sup> kWh |
| C. | 3.78 X 10<sup>5</sup> kWh |
| D. | 4.12 X 10<sup>5</sup> kWh |
| Answer» B. 2.65 X 10<sup>5</sup> kWh | |
| 4. |
The fission of a single nucleus of 235U releases 200 MeV of energy. What is the number of fissions that must occur to produce a power of 1 MW? |
| A. | 3.23 X 10<sup>16</sup> |
| B. | 3.12 X 10<sup>16</sup> |
| C. | 4.38 X 10<sup>16</sup> |
| D. | 5.38 X 10<sup>16</sup> |
| Answer» C. 4.38 X 10<sup>16</sup> | |
| 5. |
How many fission takes place per second in a 300 MW reactor, assuming each fission releases 200 MeV of energy? |
| A. | 2.38 X 10<sup>18</sup> |
| B. | 4.38 X 10<sup>18</sup> |
| C. | 8.38 X 10<sup>18</sup> |
| D. | 9.38 X 10<sup>18</sup> |
| Answer» E. | |
| 6. |
The neutrons slowed down by moderators are called as ____________ |
| A. | Slowed neutrons |
| B. | Thermal neutrons |
| C. | Fission neutrons |
| D. | Moderated neutrons |
| Answer» C. Fission neutrons | |
| 7. |
The safety-rods present to shut down the reactor are made up of ____________ |
| A. | Copper |
| B. | Calcium |
| C. | Carbon |
| D. | Cadmium |
| Answer» E. | |
| 8. |
Reflectors are used in a nuclear reactor to control the speed of neutrons. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
When the multiplication factor is greater than 1, the power increases linearly. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
The moderator commonly used is ___________ |
| A. | Diamond |
| B. | Graphite |
| C. | Lead |
| D. | Copper |
| Answer» C. Lead | |
| 11. |
The average energy of a neutron produced in a fission of Uranium 235 isotope is ___________ |
| A. | 1 MeV |
| B. | 2 MeV |
| C. | 10 MeV |
| D. | 100 MeV |
| Answer» C. 10 MeV | |
| 12. |
An atom bomb is a ____________ |
| A. | Controlled fission reaction |
| B. | Controlled fusion reaction |
| C. | Uncontrolled fission reaction |
| D. | Uncontrolled fusion reaction |
| Answer» D. Uncontrolled fusion reaction | |
| 13. |
The Q-value of fission reaction is of the order ___________ |
| A. | 10 MeV |
| B. | 100 MeV |
| C. | 200 MeV |
| D. | 500 MeV |
| Answer» D. 500 MeV | |
| 14. |
Nuclear fission is the phenomenon of ___________ |
| A. | Heavy nucleus splitting |
| B. | Heavy nucleus combining |
| C. | Light nucleus splitting |
| D. | Light nucleus combining |
| Answer» B. Heavy nucleus combining | |