Nuclear Power Engineering MCQs

Option A: Coolant

Option B: Moderator

Option C: Both A. & B.

Option D: Neutron absorber

Correct Answer: C. Both A. & B. ✔

Option A: Less

Option B: More

Option C: Same

Option D: Much more

Correct Answer: Less ✔

Option A: Potential

Option B: Thermal

Option C: Kinetic

Option D: Electrical

Correct Answer: Kinetic ✔

Option A: 1.44 T

Option B: 0.144 T

Option C: 14.4 T

Option D: 2T

Correct Answer: 1.44 T ✔

Option A: Fuel is natural uranium and heavy water acts both as moderator & coolant

Option B: Coolant water boils in the core of the reactor

Option C: Coolant water is pressurised to prevent bulk boiling of water in the core

Option D: Use of moderator is not required

Correct Answer: Coolant water is pressurised to prevent bulk boiling of water in the core ✔

Option A: Converted into fissile material on absorption of neutron

Option B: Fissioned by slow (thermal) neutrons

Option C: Fissioned by fast neutrons

Option D: Fissioned by either slow or fast neutrons

Correct Answer: Converted into fissile material on absorption of neutron ✔

Option A: Fuel & coolant

Option B: Fuel & moderator

Option C: Coolant & moderator

Option D: None of these

Correct Answer: Fuel & moderator ✔

Option A: Combustion of a nuclear fuel e.g. uranium

Option B: Fusion of atoms of uranium

Option C: Absorption of neutrons in uranium atoms

Option D: Fission of U-235 by neutrons

Correct Answer: Fission of U-235 by neutrons ✔

Option A: Excellent moderating properties

Option B: Neutron breeding capability

Option C: Faster heat removal capability from the core

Option D: Capability to increase the reaction rate in the core

Correct Answer: Faster heat removal capability from the core ✔

Option A: Fissile atoms are evenly distributed throughout the mass of nuclear reactor

Option B: Same substance (e.g. heavy water) is used as moderator & coolant

Option C: The fuel and the moderator is mixed to form a homogeneous material

Option D: All A., B. and C.

Correct Answer: The fuel and the moderator is mixed to form a homogeneous material ✔

Option A: 141

Option B: 92

Option C: 233

Option D: 325

Correct Answer: 141 ✔

Option A: Electron

Option B: α-particle

Option C: Proton

Option D: Neutron

Correct Answer: Electron ✔

Option A: 1/2

Option B: 1/4

Option C: 1/8

Option D: 1/16

Correct Answer: 1/16 ✔

Option A: Protons

Option B: Electrons

Option C: Neutrons

Option D: Nucleons

Correct Answer: Nucleons ✔

Option A: 9.31 MeV

Option B: 931 eV

Option C: 931 Mev

Option D: 931 J

Correct Answer: 931 Mev ✔

Option A: 3/4

Option B: 1/6

Option C: 3

Option D: 4

Correct Answer: 3 ✔

Option A: Zircaloy

Option B: Cadmium

Option C: Ceramics

Option D: Stainless steel

Correct Answer: Cadmium ✔

Option A: Iodine

Option B: Cobalt

Option C: Iron

Option D: Carbon

Correct Answer: Iodine ✔

Option A: 58

Option B: 98

Option C: 348

Option D: 588

Correct Answer: 98 ✔

Option A: Uses slower neutrons for fission

Option B: Uses faster neutrons for fission

Option C: Gives higher power density

Option D: Requires less fuel to run at the same power level

Correct Answer: Uses slower neutrons for fission ✔

Option A: Molten sodium cooled

Option B: Helium cooled

Option C: Boiling water

Option D: Pressurised water

Correct Answer: Boiling water ✔

Option A: α-rays

Option B: β-rays

Option C: γ-rays

Option D: X-rays

Correct Answer: α-rays ✔

Option A: Good absorber of neutrons

Option B: Solid substance

Option C: Poor absorber of neutrons

Option D: None of these

Correct Answer: Poor absorber of neutrons ✔

Option A: Electrons and three protons

Option B: Protons

Option C: Neutrons

Option D: Electrons

Correct Answer: Neutrons ✔

Option A: Plutonium

Option B: Enriched uranium

Option C: Natural uranium

Option D: Thorium

Correct Answer: Enriched uranium ✔

Option A: Graphite

Option B: Heavy water

Option C: Beryllium

Option D: No

Correct Answer: No ✔

Option A: 1

Option B: 2200

Option C: 3 × 1011

Option D: 9 × 1021

Correct Answer: 2200 ✔

Option A: Uses natural uranium as fuel

Option B: Does not require a moderator

Option C: Both A. and B.

Option D: Neither A. nor B.

Correct Answer: Does not require a moderator ✔

Option A: It is difficult to control fusion reaction

Option B: The fuel required (e.g. deuterium and tritium) is scarce

Option C: It is difficult to initiate fusion reaction

Option D: Quantity of fuel required for initiating fusion reaction is prohibitively high

Correct Answer: It is difficult to control fusion reaction ✔

Option A: Pitchblende

Option B: Monazite sand

Option C: Cassiterite

Option D: Chalcopyrite

Correct Answer: Pitchblende ✔

Option A: Maintaining constant pressure in the primary cooling circuit under varying loads

Option B: Superheating the steam

Option C: Pressurising the water in the primary coolant circuit

Option D: None of these

Correct Answer: Maintaining constant pressure in the primary cooling circuit under varying loads ✔

Option A: A + Z

Option B: A – Z

Option C: A

Option D: Z

Correct Answer: A ✔

Option A: Radioactive

Option B: Physical

Option C: Chemical

Option D: All A., B. and C.

Correct Answer: Physical ✔

Option A: Uranium-235

Option B: Uranium-233

Option C: Plutonium-239

Option D: Both B. and C.

Correct Answer: D. Both B. and C. ✔

Option A: Hydrogen

Option B: Helium

Option C: Deuterium

Option D: None of these

Correct Answer: Hydrogen ✔

Option A: More atomic weight and less atomic number

Option B: Less atomic weight and less atomic number

Option C: Less atomic weight and more atomic number

Option D: None of these

Correct Answer: More atomic weight and less atomic number ✔

Option A: Isotones

Option B: Isobars

Option C: Isotopes

Option D: Isostere

Correct Answer: Isotones ✔

Option A: 0.015

Option B: 7.54

Option C: 0.71

Option D: 32.97

Correct Answer: 0.015 ✔

Option A: Has a low absorption cross-section

Option B: Has a low scattering cross-section

Option C: Absorbs neutrons

Option D: Does not absorb neutrons

Correct Answer: Absorbs neutrons ✔

Option A: Plane

Option B: Rutherford

Option C: Fermi

Option D: Hahn and Strassmann

Correct Answer: Fermi ✔

Option A: Madam Curie

Option B: Becquerel

Option C: Roentgen

Option D: J.J. Thomson

Correct Answer: Becquerel ✔

Option A: 1

Option B: 2

Option C: 3

Option D: 7

Correct Answer: 3 ✔

Option A: Increases

Option B: Remain same

Option C: Decreases

Option D: Is unpredictable; may increase or decrease

Correct Answer: Decreases ✔

Option A: U-235

Option B: U-238

Option C: Pb-206

Option D: Bi-209

Correct Answer: U-235 ✔

Option A: Progressively increases

Option B: Progressively decreases

Option C: Remains constant throughout

Option D: May increase or decrease depending on the material

Correct Answer: Progressively decreases ✔

Option A: Radioactive decay

Option B: Thermionic emission

Option C: Nuclear fusion

Option D: Combustion

Correct Answer: Nuclear fusion ✔

Option A: Enriched uranium

Option B: Natural uranium

Option C: Plutonium

Option D: Monazite sand

Correct Answer: Enriched uranium ✔

Option A: 4

Option B: 11.6

Option C: 0

Option D: 18.6

Correct Answer: 11.6 ✔

Option A: Electron

Option B: Proton

Option C: Neutron

Option D: Position

Correct Answer: Electron ✔

Option A: 10

Option B: 18

Option C: 20

Option D: 36

Correct Answer: 20 ✔

Option A: Fission products

Option B: Plutonium

Option C: Unused fuel

Option D: All A., B. & C.

Correct Answer: D. All A., B. & C. ✔

Option A: Slow down the secondary neutrons

Option B: Absorb the secondary neutrons

Option C: Control the chain reaction

Option D: None of these

Correct Answer: Slow down the secondary neutrons ✔

Option A: U-235

Option B: U-238

Option C: Th-232

Option D: None of these

Correct Answer: U-235 ✔

Option A: Geiger-Muller Counter

Option B: Cyclotron

Option C: Cold chamber

Option D: Mass spectrograph

Correct Answer: Geiger-Muller Counter ✔

Option A: 0.2

Option B: 7

Option C: 35

Option D: 50

Correct Answer: 7 ✔

Option A: Hydrogen

Option B: Deuterium

Option C: Tritium

Option D: Helium

Correct Answer: Deuterium ✔

Option A: Molten sodium

Option B: Heavy water

Option C: Ordinary water

Option D: Helium

Correct Answer: Molten sodium ✔

Option A: Alwaye (in Kerala)

Option B: Jadugoda (in Jharkhand)

Option C: Kalpakkam (in Tamilnadu)

Option D: Gopalpur coast (in Orissa)

Correct Answer: Jadugoda (in Jharkhand) ✔

Option A: Pressurised water reactor

Option B: Gas cooled reactor

Option C: Molten sodium cooled reactor

Option D: Boiling water reactor

Correct Answer: Boiling water reactor ✔

Option A: Should have small absorption cross-section

Option B: Is generally made of boron, hafnium or cadmium

Option C: Should have large absorption cross-section

Option D: Both B. and C.

Correct Answer: D. Both B. and C. ✔

Option A: 1012

Option B: 10-12

Option C: 10-8

Option D: 108

Correct Answer: 1012 ✔

Option A: Highly purified water

Option B: A compound of oxygen and deuterium

Option C: Water having dissolved salts of heavy metals

Option D: None of these

Correct Answer: A compound of oxygen and deuterium ✔

Option A: Fission

Option B: Combustion

Option C: Thermonuclear

Option D: None of these

Correct Answer: Thermonuclear ✔

Option A: Innermost shell

Option B: Nucleus

Option C: Outermost shell

Option D: None of these

Correct Answer: Nucleus ✔

Option A: Molten sodium cooled

Option B: CO2 gas cooled

Option C: Pressurised water

Option D: Boiling water

Correct Answer: Boiling water ✔

Option A: Uranium-238

Option B: Thorium-233

Option C: Plutonium-239

Option D: None of these

Correct Answer: Plutonium-239 ✔

Option A: High carbon steel

Option B: Molybdenum

Option C: Zircaloy

Option D: Boron or cadmium

Correct Answer: Boron or cadmium ✔

Option A: 0.71

Option B: 99.29

Option C: 0.015

Option D: 29.71

Correct Answer: 99.29 ✔

Option A: Concrete

Option B: Boron

Option C: 18/8 stainless steel

Option D: All A., B. and C.

Correct Answer: D. All A., B. and C. ✔

Option A: Fuel cost per unit power generated is less

Option B: Thermal efficiency of the former is higher

Option C: Maintenance cost of the former is less

Option D: None of these

Correct Answer: Fuel cost per unit power generated is less ✔

Option A: H2

Option B: N2

Option C: He

Option D: CO2

Correct Answer: H2 ✔

Option A: γ-rays

Option B: α-rays

Option C: Neutrons

Option D: None of these

Correct Answer: γ-rays ✔

Option A: Uranium

Option B: Uranium oxide

Option C: Uranium carbide

Option D: Magnesium diuranate

Correct Answer: Magnesium diuranate ✔

Option A: Thorium-233

Option B: Uranium-235

Option C: Uranium-233

Option D: Plutonium-239

Correct Answer: Uranium-233 ✔

Option A: Has two boiling water reactors of American design

Option B: Has an installed capacity of 400 MW

Option C: Is the first power reactor in India, which became critical in 1969

Option D: All A., B. and C.

Correct Answer: D. All A., B. and C. ✔

Option A: Is recovered from spent fuel from thermal nuclear reactor

Option B: Has much lower melting point (640°C ) compared to thorium (1690°C)

Option C: Both A. and B.

Option D: Neither A. nor B.

Correct Answer: C. Both A. and B. ✔

Option A: Carnotite

Option B: Thorium

Option C: Rescolite

Option D: Pitchblende

Correct Answer: Pitchblende ✔

Option A: Mass

Option B: Atomic

Option C: Both A. & B.

Option D: Neither A. nor B.

Correct Answer: C. Both A. & B. ✔

Option A: < 0.025

Option B: > 1

Option C: 1-25

Option D: > 200

Correct Answer: < 0.025 ✔

Option A: 32

Option B: 52

Option C: 72

Option D: 88

Correct Answer: 32 ✔

Option A: Candu reactor

Option B: Fast breeder reactor

Option C: Homogeneous reactor

Option D: Pressurised water reactor

Correct Answer: Fast breeder reactor ✔

Option A: Insulation lining of the reactor

Option B: Fuel

Option C: Lubricant

Option D: Retarder of neutron velocity

Correct Answer: Retarder of neutron velocity ✔

Option A: Absence of earthquake prone zone in nearby areas

Option B: Abundant availability of water

Option C: Remotely located from residential areas

Option D: Proximity to fuel source

Correct Answer: Absence of earthquake prone zone in nearby areas ✔

Option A: The production of radioisotopes

Option B: Supplying intense fields or beams of neutron for scientific experiments

Option C: Marine ship propulsion

Option D: None of these

Correct Answer: None of these ✔

Option A: Rapid heat transfer from the core

Option B: Accelerating the reaction rate in the core

Option C: Breeding neutrons

Option D: Accelerating the neutrons

Correct Answer: Rapid heat transfer from the core ✔

Option A: Number of neutrons

Option B: Mass number

Option C: Electronic configuration

Option D: Atomic weight

Correct Answer: Electronic configuration ✔

Option A: Liquid metal cooled

Option B: Fast breeder

Option C: Thermal

Option D: Swimming pool

Correct Answer: Fast breeder ✔

Option A: 3

Option B: 235

Option C: 200

Option D: 92

Correct Answer: 3 ✔

Option A: Electron capture

Option B: β-emission

Option C: α-emission

Option D: Positron emission

Correct Answer: β-emission ✔

Option A: Chain reaction and hence the power output by regulating the number of secondary neutrons

Option B: Emission of hazardous radiation

Option C: Conversion of fissile material into fertile material

Option D: Velocity of the secondary neutrons

Correct Answer: A. Chain reaction and hence the power output by regulating the number of secondary neutrons
causing fission ✔

Option A: Third

Option B: Second

Option C: First

Option D: Zero

Correct Answer: First ✔

Option A: Talcher (Orissa)

Option B: Kaiga (Karnataka)

Option C: Rawatbhata (Rajasthan)

Option D: Kalpakkam (Tamilnadu)

Correct Answer: Talcher (Orissa) ✔

Option A: Barn

Option B: Fermi

Option C: Angstrom

Option D: Curie

Correct Answer: Curie ✔

Option A: Homogeneous

Option B: Graphite moderated

Option C: Fast breeder

Option D: Enriched uranium (3% U-235) fuelled

Correct Answer: Fast breeder ✔

Option A: 3/4th of it will disintegrate in two months

Option B: It will completely disintegrate in two months

Option C: It will completely disintegrate in four months

Option D: 1/8th of it will remain intact at the end of four months

Correct Answer: It will completely disintegrate in two months ✔

Option A: Coolant are different materials

Option B: Coolant are present in different phases (e.g., heavy water and graphite)

Option C: Fuel are present in different phases (e.g. uranium and heavy water)

Option D: None of these

Correct Answer: Fuel are present in different phases (e.g. uranium and heavy water) ✔

Option A: Uranium

Option B: Plutonium

Option C: Radium

Option D: None of these

Correct Answer: Uranium ✔

Option A: Is a better neutron moderator as well

Option B: Require comparatively smaller pumps and heat exchanger for a given heat transfer rate

Option C: Has a better heat transfer characteristics, and it can be pressurised to attain a high temperature

Option D: All A., B. and C.

Correct Answer: D. All A., B. and C. ✔

Option A: 15

Option B: 45

Option C: 65

Option D: 85

Correct Answer: 85 ✔

Option A: Research

Option B: Power

Option C: Breeder

Option D: Homogeneous

Correct Answer: Research ✔