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Nuclear Power Engineering

Nuclear Power Engineering
Specific gravity of uranium and plutonium is about

9
13
19
27

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Nuclear Power Engineering
In β-decay of radioactive material, the ratio of neutron to proton

Increases
Decreases
Remains same
Is unpredictable; may increase or decrease

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Nuclear Power Engineering
A fertile material is the one, which can be

Converted into fissile material on absorption of neutron
Fissioned by fast neutrons
Fissioned by slow (thermal) neutrons
Fissioned by either slow or fast neutrons

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Nuclear Power Engineering
'Heavy water' is termed as 'heavy' because it is

An oxide of heavier isotope of oxygen
Denser than water
A heavy liquid
An oxide of deuterium

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Nuclear Power Engineering
Heavy water is preferred over ordinary water as a coolant, because it.

Can be heated to a higher temperature without pressurizing
Is less prone to radiation damage
Acts both as an efficient coolant as well as a moderator
All of these

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Nuclear Power Engineering
Research reactors are normally meant for

Power generation
Producing high neutron flux 10¹²-10¹³ neutrons/cm², sec and studying the effect of neutron bombardment on dif ferent materials
None of these
Accelerating the neutrons

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