NUEN 304 Exam 1 (All Quizzes) | UPDATED Questions with 100%
Verified Answers
Question:
The neutron multiplication factor of a reactor, k, is
Answer:
The ratio of fission neutrons in the next generation to the fission neutrons in the previous
generation
Question:
From their definitions, identify which two of the six factors can
be greater than 1.0
Answer:
η and ε
Question:
Of the various possible events in the life cycle of neutrons
listed below, find the one that has a chance of participating in
the production of new neurons.
Answer:
Thermal neutrons that are absorbed in fuel isotopes
Question:
fast fission factor
Answer:
a ratio of the total number of fission neutrons produced by fast and thermal neutrons
together to the number of fission neutrons produced form thermal fissions.
Question:
fast non-leakage probability
Answer:
probability that fast neutron will not leak out
Question:
,resonance escape probability
Answer:
a fraction of fission neutrons that manage to slow down from fission to the thermal
energies without being absorbed
Question:
thermal non-leakage probability
Answer:
probability that thermal neutron will not leak out
Question:
thermal utilization factor
Answer:
the ratio of thermal neutrons absorptions in the fuel to total thermal neutron absorptions
Question:
reproduction factor
Answer:
the average # of fission neutrons produced per absorption in the fuel
Question:
infinite multiplication factor (k-inf)
Answer:
The ration of the neutrons produced by fission in one generation to the number of ns lost
thought absorption in the preceding generation.
Question:
effective multiplication factor (k-eff)
Answer:
The ration of the neutrons produced by fission in one generation to the number of ns lost
thought absorption and leakage in the preceding generation
Question:
, The reproduction factor is affected by...
Answer:
the temperature of a fuel and the enrichment of U235
Question:
The thermal utilization factor is affected by...
Answer:
the moderator-to-fuel-ratio, the amount of neutrons poison, and the enrichment of U235
Question:
The resonance escape probability is affected by...
Answer:
the enrichment of U235, the temperature of a fuel, and the temperature of the moderator
Question:
Each individual R region has the same keff as system as whole
Answer:
true
Question:
Each individual R region has the same k-infinite as system as
whole
Answer:
false
Question:
Partial current density Jz(+)(r,E,t) is defined as
Answer:
Rate of flow of particles that have +z components of velocity through 1cm2 perpendicular
z, per Mev at E at r and t.
Question:
Angular flux density units
Verified Answers
Question:
The neutron multiplication factor of a reactor, k, is
Answer:
The ratio of fission neutrons in the next generation to the fission neutrons in the previous
generation
Question:
From their definitions, identify which two of the six factors can
be greater than 1.0
Answer:
η and ε
Question:
Of the various possible events in the life cycle of neutrons
listed below, find the one that has a chance of participating in
the production of new neurons.
Answer:
Thermal neutrons that are absorbed in fuel isotopes
Question:
fast fission factor
Answer:
a ratio of the total number of fission neutrons produced by fast and thermal neutrons
together to the number of fission neutrons produced form thermal fissions.
Question:
fast non-leakage probability
Answer:
probability that fast neutron will not leak out
Question:
,resonance escape probability
Answer:
a fraction of fission neutrons that manage to slow down from fission to the thermal
energies without being absorbed
Question:
thermal non-leakage probability
Answer:
probability that thermal neutron will not leak out
Question:
thermal utilization factor
Answer:
the ratio of thermal neutrons absorptions in the fuel to total thermal neutron absorptions
Question:
reproduction factor
Answer:
the average # of fission neutrons produced per absorption in the fuel
Question:
infinite multiplication factor (k-inf)
Answer:
The ration of the neutrons produced by fission in one generation to the number of ns lost
thought absorption in the preceding generation.
Question:
effective multiplication factor (k-eff)
Answer:
The ration of the neutrons produced by fission in one generation to the number of ns lost
thought absorption and leakage in the preceding generation
Question:
, The reproduction factor is affected by...
Answer:
the temperature of a fuel and the enrichment of U235
Question:
The thermal utilization factor is affected by...
Answer:
the moderator-to-fuel-ratio, the amount of neutrons poison, and the enrichment of U235
Question:
The resonance escape probability is affected by...
Answer:
the enrichment of U235, the temperature of a fuel, and the temperature of the moderator
Question:
Each individual R region has the same keff as system as whole
Answer:
true
Question:
Each individual R region has the same k-infinite as system as
whole
Answer:
false
Question:
Partial current density Jz(+)(r,E,t) is defined as
Answer:
Rate of flow of particles that have +z components of velocity through 1cm2 perpendicular
z, per Mev at E at r and t.
Question:
Angular flux density units
