Mechanical Engineering MCQs

2075 MCQs  (Page 26 of 208)

Fast breeder reactor uses___________________?
A. Boiler
B. Direct cycle of coolant system
C. Double circuit system of coolant cycle
D. Multi pass system
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
Amongst the following, the fissionable materials are________________?
A. U233andpu239
B. U23iandpu233
C. U235andpu235
D. U238andpu239
Moderator in nuclear plants is used to__________________?
A. Reduce temperature
B. Extract heat from nuclear reaction
C. Control the reaction
D. Cause collision with the fast moving neutrons to reduce their speed
The most commonly used moderator in nuclear plants is___________________?
A. heavy water
B. concrete and bricks
C. graphite and concrete
D. deutrium