Listen NCERT Audio Books - Kitabein Ab Bolengi
In the nuclear reactor of a power plant:
(a) How do control rods control the rate of fission?
(b) How is heat removed from the reactor core, and what use is made of this heat?
a) In Nuclear reactors control rods are stick down into the fuel to absorb neutrons, to slow the reaction down, or withdraw to speed the reaction up.
b) Heat is removed from the nuclear reactor core with the help of liquid sodium. It absorbs the heat and transfers it to the heat exchanger. Then, this heat is used for converting water into steam in the heat exchanger, which is later used to produce electricity by rotating a turbine and its shaft which is connected to a generator.
The following questions are about the nuclear reactor of a power plant.
a) Which isotope of uranium produces the energy in the fuel rods?
b) Will the fuel rods last forever?
c) Is the energy produced by nuclear fission or nuclear fusion?
d) What is the purpose of using the graphite moderator ?
e) What is the function of boron rods in the nuclear reactor?
f) Why is liquid sodium (or carbon dioxide gas) pumped through the reactor?