POWER PLANT ENGINEERING QUIZ

Half life of a radioactive isotope corresponds to the time required for half of the following to decay

Electrons

Atom

Protons

Neutrons

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The total energy released in fission of U is

5 MeV

199 MeV

10 MeV

168 MeV

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A reactor capable of converting a ferrite material into fissile isotopes is called

Fast breeder reactor

Boiling water reactor

Breeder reactor

Regenerative reactor

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U233 is produced

As basic raw material

Artificially

By neutron irradiation of thorium

By neutron irradiation of Uz

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Which of the following type of pump is used in liquid metal cooled reactor for circulation of liquid metal

Axial

Centrifugal

Reciprocation

Electromagnetic

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Which of the following is more appropriate for a moderator? One which

Absorbs neutrons

Accelerates neutrons

Does not absorb neutrons

Eats up neutrons

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A nuclear fission produces energy of following order in MeV

200

2000

20000

20

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Enriched uranium is one in which

Extra energy is pumped from outside

Percentage of U₂₃₄ has been artificially increased

Percentage of U₂₃₅ has been artificially increased

Percentage of U has been artificially increased

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Natural uranium is made up of

99.282% U₂₃₅, 0.712% U₂₃₈, 0.06%' U₂₃₄

99.282% U₂₃₈, 0.712% U₂₃₅, 0.006% U₂₃₄

99.282% U₂₃₅, 0.712% U₂₃₄, 0.006% U₂₃₈

99.282% U₂₃₄, 0.712% U₂₃₈, 0.006% U₂₃₅

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In nuclear fission

The electrons of the element change

The original elements change into completely different elements

The molecules rearrange themselves to form other molecules

None of the listed here

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