Practice Test: Question Set - 01
1. Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has
- (A) High
neutron absorption cross-section
- (B) Low
moderating efficiency
- (C) High
neutron scatter cross-section
- (D) Low
neutron absorption cross-section
2. The efficiency of a nuclear power plant in comparison to conventional and nuclear consideration is
- (A) Higher cost of
nuclear fuel
- (B) High initial cost
- (C) High heat rejection
in condenser
- (D) Lower temperature and
pressure conditions
3. The control rods in the control system of nuclear reactors are used to
- (A) Absorb
excess neutrons
- (B) Control
fuel consumption
- (C) Control
temperature
- (D) All of these
4. Electron volt is the unit of
- (A) Atomic power
- (B) Energy
- (C) Voltage
- (D) Radio activity
5. A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order to
- (A) Slow
down the speed of fast moving neutrons
- (B) Control
the reaction
- (C) Reduce
the temperature
- (D) Extracts
heat from nuclear reaction
6. One gram of uranium will produce energy equivalent to approximately
- (A) 1 tonne of high grade coal
- (B) 4.5 tonnes of high grade coal
- (C) 10 tonnes of high grade coal
- (D) 100 tonnes of high
grade coal
7. Which of the following type of pump is used in liquid metal cooled reactor for circulation of liquid metal
- (A) Centrifugal
- (B) Axial
- (C) Reciprocation
- (D) Electromagnetic
8. 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
9. The nuclear energy is measured as
- (A) MeV
- (B) Curie
- (C) Farads
- (D) MW
10. Isotopes of same elements have
- (A) Same atomic number
and different masses
- (B) Same chemical
properties but different atomic numbers
- (C) Different masses and
different atomic numbers
- (D) Different chemical
properties and same atomic numbers
11. A boiling water reactor uses following as fuel
- (A) Enriched uranium
- (B) Plutonium
- (C) Thorium
- (D) U
12. Which of the following statement is correct regarding the features of a Breeder reactor?
- (A) It
produces more fuel than it consumes
- (B) It
requires highly enriched fuel
- (C) It
requires liquid sodium metal as moderator
- (D) All
of the above
13. In nuclear fission each neutron that causes fission releases
- (A) No new neutron
- (B) At least one new
neutron
- (C) One new neutron
- (D) More than one new
neutron
14. Artificial radioactive isotopes find application in
- (A) Power generation
- (B) Nucleonic devices
- (C) Nuclear fission
- (D) Medical field
15. 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
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