Nuclear Power Plants

1. A boiling water reactor uses following as fuel

1. enriched uranium
2. plutonium
3. thorium
4. U
5. natural uranium.

View answer

2. A fast breeder reactor

1. uses graphite rods as moderator
2. has powerful moderator
3. has no moderator
4. uses ferrite material as moderator
5. uses pressurised water as moderator.

View answer

3. A fast breeder reactor uses

1. 90% U-235
2. U-238
3. U-235
4. Pu-239
5. U-239.

View answer

4. A fast breeder reactor uses following as fuel

1. enriched uranium
2. plutonium
3. thorium
4. U235
5. natrual uranium.

View answer

5. A fission chain reaction in uranium can be developed by

1. slowing down fast neutrons so that Uz fission continues by slow motion neutrons
2. accelerating fast neutrons
3. absorbing all neutrons
4. using moderator
5. enriching U235.

View answer

6. 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. there is no such criterion
5. none of the above.

View answer

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

1. 20
2. 200
3. 2000
4. 20000
5. 2 x 105.

View answer

8. 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
5. it generates no heat.

View answer

9. A pressurised water reactor employs pressuriser for the following application

1. to maintain constant pressure in primary circuit under varying load
2. to Supply high pressure steam
3. to increase pressure of water in primary circut
4. to provide subcooled water at high pressure
5. all of the above.

View answer

10. 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. ferrite reactor.

View answer