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Power Plant Engineering

Power Plant Engineering
A nuclear fission is initiated when the critical energy as compared to neutron binding energy of the atoms is

More
Less
Same
There is no such criterion

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Power Plant Engineering
Amongst the following, the fissionable materials are

U₂₃₃ and Pu₂₂₉
U₂₃₈ and Pu₂₃₉
U₂₃₅ and Pu₂₃₅
U₂₃₁ and Pu₂₃₃

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Power Plant Engineering
For economical operation of a nuclear plant

Used fuel should be reprocessed
Moderator should be used
Coolant should be employed
Control rods should be used

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Power Plant Engineering
Reflector in nuclear plants is used to

Check pollution
Conserve energy
Shield the radioactivity completely
Return the neutrons back into the core

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Power Plant Engineering
The following present serious difficulty in designing reactor shield

Beta particles
Alpha particles
Thermal neutrons
Fast neutrons and gamma rays

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Power Plant Engineering
U238 will undergo fission by

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

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