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Fission 2 5 0 6

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View credits, reviews, tracks and shop for the 1986 Vinyl release of King Of Swing on Discogs. The P/E ratio of Fission 3.0 is -6.25, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings. Price to Book Value per Share Ratio. Fission 3.0 has a P/B Ratio of 0.71. P/B Ratios below 1 indicate that a company could be undervalued with respect to its assets and liabilities.

The 0.72% U-235 is not sufficient to produce a self-sustaining critical chain reaction in U.S. Style light-water reactors, although it is used in Canadian CANDU reactors. For light-water reactors, the fuel must be enriched to 2.5-3.5% U-235.

Fission 2 5 0 64
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Fission 2 5 0 64

Q1. What is the binding energy of the nucleus ?

Use the following data:

mass of a proton = 1.00728 u

mass of a neutron = 1.00867 u

mass of a U nucleus = 238.05076 u

1 u = 931.3 MeV

1685 MeV
B
1732 MeV
1755 MeV
D
1802 MeV

Q2. Memorytamer 1 5 2 – automatic memory freeing app. The fission of one nucleus of uranium 235 releases 200 MeV of energy. What is the value of this energy in J?

3.2 × 10-25J
B
3.2 × 10-17J
3.2 × 10-11J
D
2.0 × 106J

Q3. The mass of the nuclear fuel in a nuclear reactor decreases at a rate of 1.2 × 10–5 kg per hour. Assuming 100% efficiency in the reactor what is the power output of the reactor?

Q4. The moderator in a nuclear reactor is sometimes made of graphite. What is the purpose of the graphite?

to absorb all the heat produced
B
to decrease the neutron speeds
to absorb alpha and gamma radiations
D
to prevent the reactor from going critical

Q5. Which line, A to D, in the table gives a combination of materials that is commonly used for moderating, controlling and shielding respectively in a nuclear reactor?

moderating

controlling

shielding

A

graphite

carbon

lead

B

cadmium

carbon

concrete

Polyverse comet 1 0 0 3. C

cadmium

boron

lead

D

graphite

boron

concrete

Q6. Which one of the following statements is not true about the control rods used in a nuclear reactor?

They must absorb neutrons.
B
They must slow down neutrons to thermal speeds.
They must retain their shape at high temperatures.
D
The length of rod in the reactor must be variable.

Q7. A thermal nuclear reactor is shut down by inserting the control rods fully into the core. Which line, A to D, shows correctly the effect of this action on the fission neutrons in the reactor?

number of fission neutrons

average kinetic energy of fission neutrons

A
B
C
D

reduced
reduced
unchanged
unchanged

Radium v3 0 1. reduced
unchanged
reduced
unchanged

Q8. For a nuclear reactor in which the fission rate is constant, which one of the following statements is correct?

There is a critical mass of fuel in the reactor.
B
For every fission event, there is, on average, one further fission event.
A single neutron is released in every fission event.
D
No neutrons escape from the reactor.

Q9. Artificial radioactive nuclides are manufactured by placing naturally-occurring nuclides in a nuclear reactor. They are made radioactive in the reactor as a consequence of bombardment by

alpha particles.
B
beta particles
protons
D
neutrons

Q10. In a thermal reactor, induced fission is caused by the nucleus capturing a neutron, undergoing fission and producing more neutrons. Which one of the following statements is true?

To sustain the reaction a large number of neutrons is required per fission.
B
The purpose of the moderator is to absorb all the heat produced.
The neutrons required for induced fission of U should be slow neutrons.
D
The purpose of the control rods is to slow down neutrons to thermal speeds.

Q11. Why is a moderator required in a thermal nuclear reactor?

to prevent overheating of the nuclear core
B
to absorb surplus uranium nuclei
to shield the surroundings from gamma radiation
D
to reduce the kinetic energy of fission neutrons

Q12. The nuclear fuel, which provides the power output in a nuclear reactor, decreases in mass at a rate of 6.0 × 10–6 kg per hour. What is the maximum possible power output of the reactor?

42 kW
B
75 MW
150 MW
D
300 MW

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