A. 20
B. 200
C. 2000
D. 20,000
E. 2 x 105
Nuclear Power Plants
The size of the reactor is said to be critical when_________________?
A. chain reaction can be initiated
B. it becomes uncontrollable
C. it explodes
D. it produces no power
E. it produces tremendous power
Enriched uranium may contain fissionable contents of the order of__________________?
A. 1-99%
B. 1-25%
C. 1-50%
D. 1-75%
E. 1-90%.
In boiling water reactor, moderator is__________________?
A. coolant itself
B. ferrite rod
C. graphite rod
D. liquid sodium metal
E. blanket of thorium
The function of control rods in nuclear plants is to__________________?
A. control temperature
B. control readioactive pollution
C. control absorption of neutron
D. control fuel consumption
E. none of the above
Pick up the wrong statement Fast breeder reactors__________________?
A. operate at extremely high power densities.
B. are liquid-metal cooled
C. produce more fuel than they consume
D. are unmoderated
E. use water as coolant
Fast breeder reactor uses___________________?
A. boiler
B. direct cycle of coolant system
C. double circuit system of coolant cycle
D. multi pass system
E. single circuit system
The mass number of a substance represents the sum of total number of___________________?
A. protons and neutrons in an atom
B. protons and electrons in an atom
C. neutrons and electrons in an atom
D. protons and neutrons in a nucleus
E. protons and electrons in a nucleus
Breeder reactor has a conversion ratio of_____________________?
A. unity
B. more than unity
C. less than unity
D. zero
E. infinity
The unit of radio-activity is_____________?
A. electron-volt
B. electron-ampere
C. curie
D. MeV
E. AMU
