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Nuclear Power Engineering

Nuclear Power Engineering
75% of a radioactive element decays in 6 hours. Its half life period is __________ hours.

4
3
43836
43894

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Nuclear Power Engineering
Gas cooling as compared to water cooling of nuclear reactors

Can produce only saturated steam for feeding to power turbine
Is more efficient as gas has a higher specific heat
None of these
Can not attain a high temperature

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Nuclear Power Engineering
Pressure of CO₂ gas (which is a coolant) in the Calder-Hall nuclear reactor is __________ kgf/cm² .

50
35
7
0.2

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Nuclear Power Engineering
A thermal nuclear reactor compared to a fast breeder reactor

Uses slower neutrons for fission
Uses faster neutrons for fission
Requires less fuel to run at the same power level
Gives higher power density

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Nuclear Power Engineering
Which of the following is the most harmful for the human being?

Β-rays
Γ-rays
Ultra violet rays
X-rays

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Nuclear Power Engineering
What is the average life of a radioactive atom having a 'half life period' of T?

0.144 T
2T
14.4 T
1.44 T

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