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- 1. Multiple Choice
In a pressurized water reactor( PWR) _____________
Light or heavy water is used as both coolant and moderator.
The coolant water boils in the reactor core.
Water is used at high pressure
Both (a) and (c).
- 2. Multiple Choice
The reason for providing the thermal shielding is to _________________
Absorb the fast neutrons
Protect the operating personnel from exposure to radiations
Prevent the reactor wall from getting heated
All of the above
- 3. Multiple Choice
Reflectors of a nuclear reactors are made of........
Boron
Cast iron
Beryllium
Steel
- 4. Multiple Choice
The nuclear energy is measured as........
MeV
MW
Curie
None of the above
- 5. Multiple Choice
The function of the moderator in a nuclear is to........
Stop chain reaction
Absorb neutrons
Reduce the speed of neutrons
Reduce temperature
- 6. Multiple Choice
In a nuclear reactor function of reflector is to......
Reduce the speed of the neutrons
Stop the chain reaction
Reflect the escaping neutrons back into the core
None of the above
- 7. Multiple Choice
Which is the most commonly used moderator?
Graphite
Sodium
Deuterium
Heavy water
- 8. Multiple Choice
U238 will undergo fission by
Slow neutrons alone
fast neutrons alone
Either fast or slow neutrons
medium energy neutrons
- 9. Multiple Choice
The risk of radioactive hazard is greatest in the turbine with following reactor
pressurized water
boiling water
gas cooled
liquid metal cooled
- 10. Multiple Choice
The function of control rods is nuclear plants is to
control temperature
control radioactive pollution
control absorption of neutron
control fuel consumption
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