Nuclear Power Plants MCQs

Option A: Th232andU238

Option B: U233andPu239

Option C: U233andPu238

Option D: non oh these

Correct Answer: U233andPu238 ✔

Option A: In a heterogeneous or solid-fuel reactor, the fuel is mixed in a regular pattern within moderator.

Option B: Slow or thermal neutrons have energy of the order or 0.025 eV

Option C: Fast neutrons have energies above 1000 eV

Option D: Fast reactor uses moderator

Correct Answer: Fast reactor uses moderator ✔

Option A: centrifugal

Option B: axial

Option C: reciprocation

Option D: electromagnetic

Correct Answer: electromagnetic ✔

Option A: enriched uranium

Option B: plutonium

Option C: thorium

Option D: U

Correct Answer: enriched uranium ✔

A. the original elements change into completely different elements
B. the electrons of the element change
C. the molecules rearrange themselves to form other molecules
D. none of the above

Correct Answer: A. the original elements change into completely different elements
B ✔

Option A: used fuel should be reprocessed

Option B: moderator should be used

Option C: coolant should be employed

Option D: control rods should be used

Correct Answer: used fuel should be reprocessed ✔

Option A: 1 neutron

Option B: 1 — neutrons

Option C: 1 – 2 neutrons

Option D: 2 — neutrons

Correct Answer: 2 — neutrons ✔

Option A: uses graphite rods as moderator

Option B: has powerful moderator

Option C: has no moderator

Option D: uses ferrite material as moderator

Correct Answer: has no moderator ✔

Option A: enriched uranium

Option B: plutonium

Option C: thorium

Option D: U235

Correct Answer: U235 ✔

Option A: power generation

Option B: nucleonic devices

Option C: nuclear fission

Option D: nuclear fusion

Correct Answer: medical field ✔

Option A: electrons

Option B: protons

Option C: neutrons

Option D: nulceus

Correct Answer: atom ✔

Option A: coolant itself

Option B: ferrite rod

Option C: graphite rod

Option D: liquid sodium metal

Correct Answer: coolant itself ✔

Option A: for boiling pi water in the core

Option B: to use liquid sodium metal as coolant

Option C: to use intermediate coolant

Option D: to prevent the water coolant from boiling in the core

Correct Answer: to prevent the water coolant from boiling in the core ✔

Option A: 90% U-235

Option B: U-238

Option C: U-235

Option D: Pu-239

Correct Answer: 90% U-235 ✔

Option A: light weight atoms

Option B: heavy weight atoms

Option C: critical atoms

Option D: zero weight atoms

Correct Answer: light weight atoms ✔

Option A: Co2

Option B: pressurised water

Option C: mixture of water and steam

Option D: liquid metal

Correct Answer: mixture of water and steam ✔

Option A: plutonium

Option B: uranium

Option C: deuterium

Option D: thorium

Correct Answer: deuterium ✔

Option A: increased production of neutrons

Option B: complete absorption of neutrons

Option C: controlled production of neutrons

Option D: decreased leakage of neutrons

Correct Answer: decreased leakage of neutrons ✔

Option A: higher cost of nuclear fuel

Option B: high initial cost

Option C: high heat rejection in condenser

Option D: lower temperature and pressure condi-tions

Correct Answer: lower temperature and pressure condi-tions ✔

Option A: more

Option B: less

Option C: same

Option D: zero

Correct Answer: less ✔

Option A: slowing down fast neutrons so that Uz fission continues by slow motion neutrons

Option B: accelerating fast neutrons

Option C: absorbing all neutrons

Option D: using moderator

Correct Answer: slowing down fast neutrons so that Uz fission continues by slow motion neutrons ✔

Option A: greater than 1.0

Option B: less than 1.0

Option C: equal to zero

Option D: equal to 1.0

Correct Answer: equal to 1.0 ✔

Option A: alpha particles

Option B: beta particles

Option C: thermal neutrons

Option D: fast neutrons and gamma rays

Correct Answer: fast neutrons and gamma rays ✔

Option A: kinetic energy of neutrons

Option B: kinetic energy of fission products

Option C: instantaneous release of gamma rays

Option D: gradual readioactive decay of fission products

Correct Answer: kinetic energy of fission products ✔

Option A: fast moving

Option B: slow moving

Option C: critical neutrons

Option D: neutrons at rest

Correct Answer: slow moving ✔

Option A: does not absorb neutrons

Option B: absorbs neutrons

Option C: accelerates neutrons

Option D: eats up neutrons

Correct Answer: does not absorb neutrons ✔

Option A: plates

Option B: pallets

Option C: pins

Option D: any one of the above

Correct Answer: any one of the above ✔

Option A: natural uranium

Option B: enriched uranium

Option C: pure uranium

Option D: any type of uranium

Correct Answer: enriched uranium ✔

Option A: infinite

Option B: zero

Option C: exactly balanced by the loss of neutrons through leakage

Option D: initiated

Correct Answer: exactly balanced by the loss of neutrons through leakage ✔

Option A: at the lower rate than the consumption

Option B: at a higher rate than the constuption

Option C: at an equal rate of the consumption

Option D: depends on other considerations

Correct Answer: at a higher rate than the constuption ✔

Option A: boiling water

Option B: gas cooled

Option C: pressurised water

Option D: all of the above

Correct Answer: gas cooled ✔

Option A: almost same

Option B: slightly more

Option C: slightly less

Option D: much less

Correct Answer: much less ✔

Option A: chain reaction can be initiated

Option B: it becomes uncontrollable

Option C: it explodes

Option D: it produces no power

Correct Answer: chain reaction can be initiated ✔

Option A: fast

Option B: slow

Option C: in bulk

Option D: static

Correct Answer: slow ✔

Option A: acts as good moderator

Option B: produces maximum steam

Option C: transfers heat from core at a fast rate

Option D: breeds neutrons

Correct Answer: transfers heat from core at a fast rate ✔

Option A: natural uranium

Option B: molten lead

Option C: any form of uranium

Option D: thorium

Correct Answer: molten lead ✔

Option A: to maintain constant pressure in primary circuit under varying load

Option B: to Supply high pressure steam

Option C: to increase pressure of water in primary circut

Option D: to provide subcooled water at high pressure

Correct Answer: to maintain constant pressure in primary circuit under varying load ✔

Option A: control temperature

Option B: control readioactive pollution

Option C: control absorption of neutron

Option D: control fuel consumption

Correct Answer: ✔

Option A: light or heavy water

Option B: molten lead

Option C: carbon dioxide

Option D: freon

Correct Answer: light or heavy water ✔

Option A: Ulii

Option B: U

Option C: U238

Option D: Pu:

Correct Answer: U ✔

Option A: as basic raw material

Option B: by neutron irradiation of IT*

Option C: by neutron irradiation of thorium

Option D: artificially

Correct Answer: by neutron irradiation of IT* ✔

Option A: operate at extremely high power densities.

Option B: are liquid-metal cooled

Option C: produce more fuel than they consume

Option D: are unmoderated

Correct Answer: use water as coolant ✔

Option A: electron-volt

Option B: electron-ampere

Option C: curie

Option D: MeV

Correct Answer: curie ✔

Option A: as basic raw material

Option B: by neutron irradiation of Uz

Option C: by neutron irradiation of thorium

Option D: artificially

Correct Answer: by neutron irradiation of thorium ✔

Option A: as basic raw material

Option B: by neutron irradiation of Uz

Option C: by neutron irradiation of throium

Option D: artificially

Correct Answer: by neutron irradiation of Uz ✔

Option A: 99.282% U238, 0.712% U235, 0.006% U234

Option B: 99.282% U235, 0.712% U238, 0.06%’ U234

Option C: 99.282% U234, 0.712% U238, 0.006% U235

Option D: 99.282% U235, 0.712% U234, 0.006% U238

Correct Answer: 99.282% U238, 0.712% U235, 0.006% U234 ✔

Option A: 1-99%

Option B: 1-25%

Option C: 1-50%

Option D: 1-75%

Correct Answer: 1-99% ✔

Option A: regenerative reactor

Option B: fast breeder reactor

Option C: breeder reactor

Option D: boiling water reactor

Correct Answer: regenerative reactor ✔

Option A: atomic power

Option B: energy

Option C: voltage

Option D: radio activity

Correct Answer: energy ✔

Option A: pressurised water

Option B: boiling water

Option C: gas cooled

Option D: liquid metal cooled

Correct Answer: boiling water ✔

Option A: is lighter

Option B: is inert

Option C: has high specific heat

Option D: is a good conductor

Correct Answer: has high specific heat ✔

Option A: high energy (fast) neutrons alone

Option B: low energy (slow) neutrons alone

Option C: either fast or slow neutrons

Option D: medium energy neutrons

Correct Answer: either fast or slow neutrons ✔

Option A: Kota

Option B: Kalapakkam

Option C: Tarapur

Option D: Baraeilly

Correct Answer: Tarapur ✔

Option A: ordinary fluid

Option B: heavy water

Option C: molten lead

Option D: hydrogen gas

Correct Answer: ordinary fluid ✔

Option A: high energy (fast) neutrons alone

Option B: low energy (slow) neutrons alone

Option C: either fast or slow neutrons

Option D: medium energy neutrons

Correct Answer: high energy (fast) neutrons alone ✔

Option A: maximum in center and zero at side

Option B: maximum at side and zero in center

Option C: uniform throughout

Option D: zero throughout

Correct Answer: uniform throughout ✔

Option A: fast breeder

Option B: pressurised water

Option C: boiling water

Option D: sodium graphite

Correct Answer: boiling water ✔

Option A: 1

Option B: 2

Option C: U

Option D: 3

Correct Answer: 3 ✔

Option A: return the neutrons back into the core

Option B: shield the radioactivity completely

Option C: check polllution

Option D: conserve energy

Correct Answer: return the neutrons back into the core ✔

Option A: lead or concrete

Option B: lead and tin

Option C: graphite or cadmium

Option D: thick galvanised sheets

Correct Answer: lead or concrete ✔

Option A: 1 MeV

Option B: 2.4 MeV

Option C: 4.3 MeV

Option D: 7.8 MeV

Correct Answer: 7.8 MeV ✔

Option A: the most fissionable material

Option B: the basic fuel for nuclear paints

Option C: basic raw material for nuclear plants

Option D: the material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material

Correct Answer: the material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material ✔

Option A: any type of moderator can be used

Option B: graphite is used as the moderator

Option C: heavy water is used as the moderator

Option D: moderator may or may not be used

Correct Answer: moderator is dispensed with ✔

Option A: nucleus

Option B: electron

Option C: proton

Option D: meson

Correct Answer: electron ✔

Option A: no new neutron

Option B: at least one new neutron

Option C: one new neutron

Option D: more than one new neutrons

Correct Answer: one new neutron ✔

Option A: graphite, C02

Option B: graphite, air

Option C: heavy water, C02

Option D: lead, H2

Correct Answer: graphite, C02 ✔

Option A: same

Option B: more

Option C: less

Option D: there is no such criterion

Correct Answer: more ✔

Option A: protons and neutrons in an atom

Option B: protons and electrons in an atom

Option C: neutrons and electrons in an atom

Option D: protons and neutrons in a nucleus

Correct Answer: protons and neutrons in a nucleus ✔

Option A: demineralised water

Option B: carbon dioxide

Option C: heavy water

Option D: graphite

Correct Answer: no moderator is used ✔

Option A: splitting

Option B: fission

Option C: fusion

Option D: disintegration

Correct Answer: fission ✔

Option A: 20

Option B: 200

Option C: 2000

Option D: 20,000

Correct Answer: 20 ✔

Option A: same

Option B: lower

Option C: higher

Option D: unity

Correct Answer: lower ✔

Option A: neutron

Option B: proton

Option C: atom

Option D: electron

Correct Answer: atom ✔

Option A: %age of U235 has been artificially in-creased

Option B: %age of U has been artificially increased

Option C: %age of U234 has been artificially in-creased

Option D: extra energy is pumped from outside

Correct Answer: %age of U235 has been artificially in-creased ✔

Option A: U233andPu239

Option B: U

Option C: U238andPu239

Option D: U238andTh239

Correct Answer: U ✔

Option A: X-rays

Option B: infra-red rays

Option C: a, P, and y rays

Option D: neutrons and gamma rays

Correct Answer: neutrons and gamma rays ✔

Option A: heavy water

Option B: concrete and bricks

Option C: graphite and concrete

Option D: deutrium

Correct Answer: graphite ✔

Option A: reduce temperature

Option B: extract heat from nuclear reaction

Option C: control the reaction

Option D: cause collision with the fast moving neutrons to reduce their speed

Correct Answer: cause collision with the fast moving neutrons to reduce their speed ✔

Option A: MeV

Option B: curie

Option C: farads

Option D: MW

Correct Answer: MeV ✔

Option A: U233andPu239

Option B: U23iandPu233

Option C: U235andPu235

Option D: U238andPu239

Correct Answer: U233andPu239 ✔

Option A: same atomic number and different masses

Option B: same chemical properties but different atomic numbers

Option C: different masses and different atomic numbers

Option D: different chemical properties and same atomic numbers

Correct Answer: same chemical properties but different atomic numbers ✔

Option A: same

Option B: more

Option C: less

Option D: may be less or mote depending on size

Correct Answer: less ✔

Option A: gas cooled

Option B: liquid metal cooled

Option C: pressurised water

Option D: boiling water

Correct Answer: boiling water ✔

Option A: boiler

Option B: direct cycle of coolant system

Option C: double circuit system of coolant cycle

Option D: multi pass system

Correct Answer: double circuit system of coolant cycle ✔

Option A: unity

Option B: more than unity

Option C: less than unity

Option D: zero

Correct Answer: unity ✔

Option A: 1 tonne of high grade coal

Option B: 4.5 tonnes of high grade coal

Option C: 10 tonnes of high grade coal

Option D: 100 tonnes of high grade coal

Correct Answer: 4.5 tonnes of high grade coal ✔

Option A: boiler

Option B: direct cycle of coolant system

Option C: double circuit system of coolant cycle

Option D: multi pass system

Correct Answer: direct cycle of coolant system ✔

Option A: 5 MeV

Option B: 10 MeV

Option C: 199 MeV

Option D: 168 MeV

Correct Answer: 199 MeV ✔

Option A: it is generating power to rated capacity

Option B: it is capable of generating much more than rated capacity

Option C: there is danger of nuclear spread

Option D: chain reaction that causes automatic splitting of the fuel nuclei has been established

Correct Answer: chain reaction that causes automatic splitting of the fuel nuclei has been established ✔

Option A: mass number

Option B: atomic number

Option C: chemical properties

Option D: position in periodic table

Correct Answer: mass number ✔

Option A: protons in the nucleus

Option B: electrons in me nucleus

Option C: neutrons in the nucleus

Option D: electrons in the atom

Correct Answer: protons in the nucleus ✔