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Nuclear Power Engineering

Nuclear Power Engineering
Thorium metal

All of these
Is less hard (in the range of silver)
Is highly ductile
Resembles steel in appearance

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Nuclear Power Engineering
Absorption/scattering cross-section of an element is expressed in "barn", which is equivalent to

10⁻²⁴ cm
1 Angstrom
10⁻²⁴ cm²
10⁻¹² cm

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Nuclear Power Engineering
Critical mass is the minimum mass of nuclear fissile material required for the

Sustainment of chain reaction
None of these
Economic power generation
Power generation on commercial scale

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Nuclear Power Engineering
The critical mass of a fissionable material can be reduced by

Cooling it
Surrounding it by neutron absorbing material
Surrounding it by neutron reflecting material
Heating it

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Nuclear Power Engineering
Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around __________ m/sec.

2200
1
3 x 10¹¹
9 x 10²¹

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Nuclear Power Engineering
Energy equivlant to one atomic mass unit (amu) is __________ MeV.

9.31
93.1
9310
931

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