Explain the principle and working of Nuclear Reactor with the help of labelled diagram. If one microgram of U 92 235 is completely destroyed in an atom bomb, how much energy will be released?

NUCLEAR REACTOR: A nuclear reactor is a device to produces nuclear energy based on controlled nuclear chain reaction. Principle of nuclear reactor: It works on the principle of achieving a controlled chain reaction of Uranium enriched with U 235 and as a result generating huge amount of energy. The chain reaction is controlled by slowing down the fission neutrons to thermal neutrons by using a moderator. The reaction rate is maintained by controlled rods that can absorb neutrons Working: 1. Neutron induced fission releases energy plus extra fast neutrons. 2. Fast neutrons are slowed down by a “moderator” such as water or graphite, allowing chain reaction to occur. 3. Chain reaction is controlled by controlling the condition of the moderator, or by use of neutron absorbing materials (e.g. cadmium control rods) 4. Heat is removed by some form of heat exchanger where it is used to run a heat engine. Given the amount of uranium destroyed= 1 μgm = 10 - 9 kg . Complete destruction of this mass will emit energy as given by the Einstein's mass energy relation i.e E = m c 2 , where m = mass, and c = velocity of light = 3 × 10 8 m s - 1 Substituting the given values, we have Energy released= E = 1 × 10 - 9 × 3 × 10 8 2 = 9 × 10 7 J

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Which is the best type of nuclear reactor?

Important Questions on Nuclear Physics

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Physics>Modern Physics>Nuclear Physics>Nuclear Fission

A nuclear fuel rod generates energy at a rate of

5 \times 10^{8} W m^{- 3} .

It is in the shape of a cylinder of radius

4.0 mm

and length

0.20 m .

A coolant of specific heat

4 \times 10^{3} J {kg}^{- 1} K^{- 1}

flows, past it at a rate of,

0.2 kg s^{- 1}

. The temperature rise in this coolant is approximately,

MEDIUM

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Draw the diagram of a nuclear power reactor and label the following part.

The part that confines neutrons to the core

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Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Explain the principle and working of Nuclear Reactor with the help of labelled diagram.

If one microgram of ${}_{92}^{235}U$ is completely destroyed in an atom bomb, how much energy will be released?

HARD

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Explain the principle and working of a nuclear reactor with the help of a labelled diagram.

HARD

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Briefly describe the working of a nuclear reactor.

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Physics>Modern Physics>Nuclear Physics>Nuclear Fission

A chain reaction is possible when the mass of the fuel is greater than the

MEDIUM

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Draw the diagram of a nuclear power reactor and label the following part.

Radiation shield.

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Physics>Modern Physics>Nuclear Physics>Nuclear Fission

A nuclear reactor delivers a power of

10^{9} W

. What is the amount of fuel consumed by the reactor in one hour ?

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Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Write the function of coolant used in nuclear reactor.

HARD

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Explain the process of release of energy in a nuclear reactor. Draw a schematic diagram of a nuclear reactor and write the function of each part.

MEDIUM

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Mention one misuse of nuclear fission reaction.

MEDIUM

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

In nuclear reactor, cadmium rods are used as:

MEDIUM

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

What kind of nuclear reaction produces energy in a nuclear reactor?

HARD

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Explain the principle and working of a nuclear reactor with the help of a labelled diagram.

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Physics>Modern Physics>Nuclear Physics>Nuclear Fission

In a nuclear reactor, the following fission reaction occurs

${}_{92}^{235}U + {}_{0}^{1}n \to {}_{56}^{141}{Ba} + {}_{36}^{92}{Kr} + neutrons$

Control rods made of Cadmium are inserted to remove extra neutrons. How many neutrons need to be removed for each of the above reactions so that the reactor remains critical?

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Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Rewrite and complete the following nuclear reaction by filling in the atomic number of Ba and mass number of Kr:

${}_{92}^{235}U + {}_{0}^{1}n \to {}_{___}^{144}{Ba} + {}_{36}^{___}{Kr} + 3 {}_{0}^{1}n + Energy$

HARD

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

A fission reaction is given by

{}_{92}^{236}U \to {}_{54}^{140}{X e} + {}_{38}^{94}{S r} + x + y

, where

x

and

y

are two particles. Considering

{}_{92}^{236}U

to be at rest, the kinetic energies of the products are denoted by

K_{X e}, K_{S r}, K_{x} (2 M e V)

and

K_{y} (2 M e V)

, respectively. Let the binding energies per nucleon of

{}_{92}^{236}U, {}_{54}^{140}{X e}

and

{}_{38}^{94}{S r}

7.5 MeV

8.5 MeV

, and

8.5 MeV

respectively. Considering different conservation laws, the correct option(s) is (are)

EASY

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Explain the process of release of energy in a nuclear reactor. Draw a schematic diagram of the nuclear reactor.

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Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Name a material which is used in making control rods in a nuclear reactor.

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Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Explain the principle and working of a nuclear reactor with the help of a labelled diagram.

Which is the best type of nuclear reactor?

Important Questions on Nuclear Physics

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