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IC Engines and Nuclear Power Plants - Data Intensity 1 Multiple Questions and Answers.
| 11. | Where reactor operation is designed with fast neutrons such as in reactors using highly enriched fuel, the moderator used is | ||
| A. | heavy water | ||
| B. | graphite | ||
| C. | carbon dioxide | ||
| D. | no moderator is needed | ||
| 12. | In a diesel engine, the duration between the time of injection and ignition, is known as | ||
| A. | pre-ignition period | ||
| B. | delay period | ||
| C. | period of ignition | ||
| D. | burning period | ||
| 13. | Each fission of U235 produces on the average __________ fast neutrons as a product of reaction. | ||
| A. | 2.46 | ||
| B. | 24.6 | ||
| C. | 246 | ||
| D. | 2460 | ||
| 14. | Reactors for propulsion applications are designed for | ||
| A. | any form of uranium | ||
| B. | natura uranium | ||
| C. | enriched uranium | ||
| D. | plutonium | ||
| 15. | The primary fuel used in nuclear power plants is | ||
| A. | U235 | ||
| B. | U238 | ||
| C. | Pu239 | ||
| D. | Pu233 | ||
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