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Power Plant Engineering

Power Plant Engineering
Boiling water reactor uses the following as moderator, coolant and working fluid

Heavy water
Molten lead
Ordinary fluid
Hydrogen gas

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Power Plant Engineering
When a reactor becomes critical, then the production of neutrons is

Initiated
Exactly balanced by the loss of neutrons through leakage
Zero
Infinite

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Power Plant Engineering
The incomplete combustion is indicated by present of

CO
CO2
Water vapour
O2

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Power Plant Engineering
In order to have constant chain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be

Greater than 1.0
Equal to zero
Equal to 1.0
Less than 1.0

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Power Plant Engineering
The total energy released in fission of U is

199 MeV
168 MeV
10 MeV
5 MeV

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Power Plant Engineering
U238 will undergo fission by

Either fast or slow neutrons
High energy (fast) neutrons alone
Low energy (slow) neutrons alone
Medium energy neutrons

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