Question

Explain the principle and working of a nuclear reactor with the help of a labelled diagram. A nuclear power reactor generates electric power of

100 MW

. How many numbers of fission occur per second if the nuclear fuel used is the reactor is uranemium.

Accepted Answer

Principle and working of nuclear reactor:

A nuclear reactor works on the principle of achieving a control chain reaction in Uranium $(238)$ enriched with Uranium $(235)$ generating large amounts of energy.
The reactor consists of fuel, moderators, control rods, radiation shielding and coolants.
Fuel: In the reactor, fuel is fabricated in form of thin and long cylindrical rods together known as fuel assembly. The rods are surrounded by coolant for the transfer of heat produced in them.
Natural uranium is used as nuclear fuel.
Moderators are used to slow down the velocity of neutrons. E.g. graphite, heavy water.
Control rods are used to control the fission rate by absorbing neutrons. Cadmium and Boron are used to serve the purpose.
Radiation shielding by the utilisation of steel, lead, concrete etc. are provided to absorb and reduce the intensity of beta and gamma radiations emitted during fission, to such low levels that it does not become harmful to operating personnel.

The power of a nuclear reactor using uranium is given by,

$P = (\frac{n}{t}) \times 200 \times 10^{6} eV$

$100 \times 10^{6} = (\frac{n}{t}) \times 200 \times 10^{6} \times 1.6 \times 10^{- 19} \Rightarrow \frac{n}{t} = \frac{100 \times 10^{6}}{200 \times 10^{6} \times 1.6 \times 10^{- 19}} = 3.125 \times 10^{18} s^{- 1}$

Explain the principle and working of a nuclear reactor with the help of a labelled diagram. A nuclear power reactor generates electric power of $100 MW$ . How many numbers of fission occur per second if the nuclear fuel used is the reactor is uranemium.

Important Questions on Nuclei

Learn and Prepare for any exam you want !

Explain the principle and working of a nuclear reactor with the help of a labelled diagram. A nuclear power reactor generates electric power of 100MW. How many numbers of fission occur per second if the nuclear fuel used is the reactor is uranemium.

Important Questions on Nuclei

Learn and Prepare for any exam you want !

Explain the principle and working of a nuclear reactor with the help of a labelled diagram. A nuclear power reactor generates electric power of $100 MW$ . How many numbers of fission occur per second if the nuclear fuel used is the reactor is uranemium.