Nuclear Power Plant MCQ Questions and Answers for Practice

1. A nuclear fission is initiated when the critical energy as compared to neutron binding energy of the atoms is

1. same
2. more
3. less
4. none of the above

2. A nuclear fission produces energy of following order in MeV

1. 20
2. 200
3. 2000
4. 20000

3. A nuclear unit becoming critical means

1. it is generating power to rated capacity
2. it is capable of generating much more than rated capacity
3. there is danger of nuclear spread
4. chain reaction that causes automatic splitting of the fuel nuclei has been established

4. A reactor capable of converting a ferrite material into fissile isotopes is called

1. regenerative reactor
2. fast breeder reactor
3. breeder reactor
4. boiling water reactor

5. Amongst the following, the fissionable materials are

1. U-233 and Pu-239
2. U-23i and Pu-233
3. U-235 and Pu-235
4. U-238 and Pu-239

6. Boiling water reactor employs

1. boiler
2. direct cycle of coolant system
3. double circuit system of coolant cycle
4. multi pass system

7. Breeder reactor has a conversion ratio of

1. unity
2. more than unity
3. less than unity
4. zero

8. Fast breeder reactor uses

1. boiler
2. direct cycle of coolant system
3. double circuit system of coolant cycle
4. multi pass system

9. For economical operation of a nuclear plant

1. used fuel should be reprocessed
2. moderator should be used
3. coolant should be employed
4. control rods should be used

10. Gas cooled reactor uses following materials as moderator, and coolant

1. graphite, C02
2. graphite, air
3. heavy water, C02
4. lead, H2

11. Hydrogen is preferred as better coolant in comparison to C02 because former

1. is lighter
2. is inert
3. has high specific heat
4. is a good conductor

12. In boiling water reactor, moderator is

1. coolant itself
2. ferrite rod
3. graphite rod
4. liquid sodium metal

13. In nuclear fission each neutron that causes fission releases

1. no new neutron
2. at least one new neutron
3. one new neutron
4. more than one new neutrons

14. Moderator in nuclear plants is used to

1. moderate the radioactive pollution
2. extract heat from nuclear reaction
3. control the reaction
4. cause collision with the fast moving neutrons to reduce their speed

15. One gram of uranium will produce energy equivalent to approximately

1. 1 tonne of high grade coal
2. 4.5 tonnes of high grade coal
3. 10 tonnes of high grade coal
4. 100 tonnes of high grade coal