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Tuesday, February 19, 2019

Power Plant Engineering (Objective Questions)




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1. Enriched uranium is required as a fuel in a nuclear reactor, if light 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 (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 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 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 

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