MCQ on Power Plant Engineering Part-5

Power Plant Engineering

1. Canning in the nuclear reactor is a process of coating the fuel with a material that does not contaminate the coolant, also eliminates the radiation hazards. Which material is used for this?

a. Aluminium

b. Magnesium

c. Stainless steel

d. All of these.

 

2. In Canadium Deuterium Uranium reactor (CANDU), heavy water is used as _______.

a. Moderator

b. Coolant

c. Neutron reflector

d. All of the above

 

3. Fast breeder reactor uses______.

(a) boiler

(b) direct cycle of coolant system

(c) double circuit system of coolant cycle

(d) multi pass system

 

4. The commonly used material for shielding is ______.

(a) lead or concrete

(b) lead and tin

(c) graphite or cadmium

(d) thick galvanized sheets

 

5. Boiling water reactor uses the following as moderator, coolant and working fluid _______.

(a) ordinary fluid

(b) heavy water

(c) molten lead

(d) hydrogen gas

 

6. U235 will undergo fission by _______.

(a) high energy (fast) neutrons alone

(b) low energy (slow) neutrons alone

(c) either fast or slow neutrons

(d) medium energy neutrons

 

7. Natural uranium is made up of _________.

(a) 99.282% U238, 0.712% U235, 0.006% U234

(b) 99.282% U235, 0.712% U238, 0.06%’ U234

 (c) 99.282% U234, 0.712% U238, 0.006% U235

 (d) 99.282% U235, 0.712% U234, 0.006% U238

 

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

(a) regenerative reactor

(b) fast breeder reactor

(c) breeder reactor

(d) boiling water reactor

 

9. Enriched uranium may contain fissionable contents of the order of _______.

(a) 1-99%

(b) 1-25%

(c) 1-50%

(d) 1-75%

 

10. Electrons that orbit the outermost shell of an atom are called?

a) Valence electrons

b) Electrons

c) Electron Coefficients

d) Neutrons

 

11. What happens when a neutron is absorbed by a nucleus of an atom of U235?

a) Mass number of atom increases

b) One electron is let out

c) U236 isotope is formed

d) Nucleus becomes unstable

 

12. Select the desirable property of a moderator?

a) Moderator should absorb neutrons but slow down the neutrons as early as possible

b) It should have low thermal conductivity for better heat transfer

c) It shouldn’t be chemically unstable

d) It should have low resistance to corrosion

 

13. Heavy nuclei must be such that they can be fissioned by neutrons of an energy such substance are called?

a) Fission fragments

b) Fission Neutrons

c) Fission species

d) Fission elements

 

14. Control rods are made of __________.

a) Cesium

b) Cadmium

c) Tin

d) Gallium

 

15. Who invented nuclear fission?

a) Rutherford

b) Hans Bethe

c) Otto Hahn

d) Marie Curie

 

16. What types of rays are trapped by shielding?

 a) Gamma rays

b) Beta rays

c) X-rays

d) IR rays

 

17. Most of the energy released in fission process is in process of __________.

a) Kinetic Energy

b) Thermal Energy

c) Light Energy

d) Heat Energy

 

18. Which nuclear fuel is usually used in thermal nuclear reactor to create fission?

a) U234

b) U235

c) U236

d) U237

 

19. PWR stands for ________.

a) Power

b) Partially weathered rock

c) Pressurized water Reactor

d) Packaging waste regulations

 

20. In which of the following reactor is heavy hydrogen isotope H-2 is used as moderator?

a) Boiling water reactor

b) Pressurized water reactor

c) Candu reactor

d) Thermal reactor

 

21. What is the acronym of LMFBR?

a) Liquid molecular fast boiling reactor

 b) Liquid metal fast breeder reactor

c) Liquefied metal fast boiling reactor

d) Liquid metal fast boiling reactor

 

22. LWR stands for _________.

a) Lower water reactor

b) Line water reactor

c) Liquefied water  reactor

d) Light water reactor

 

23. Pick up the wrong statement_______.

(a) In a heterogeneous or solid-fuel reactor, the fuel is mixed in a regular pattern within a moderator.

(b) Slow or thermal neutrons have energy of the order or 0.025 eV

 (c) Fast neutrons have energies above 1000 eV

(d) Fast reactor uses moderator

 

24. The function of control rods in nuclear plants is to_________.

(a) control temperature

(b) control radioactive pollution

(c) control absorption of neutron

 (d) control fuel consumption

 

25. In fast breeder reactors _____.

(a) any type of moderator can be used

(b) graphite is used as the moderator

(c) heavy water is used as the moderator

 (d) moderator is dispensed with

26. The process by which a heavy nucleus is splitted into two light nuclei is known as_______.

(a) splitting

(b) fission

(c) fusion

(d) chain reaction

 

27. Moderator is not required in_____.

a. Pressurized water reactor

b. Gas cooled reactor

c. Boiling water reactor

d. Breeder reactor

 

28. Can vacated coal mines be used for waste disposal.

a) True

b) False

 

29. Gas cooled reactor uses following materials as moderator, and coolant______.

(a) graphite, C02

(b) graphite, air

(c) heavy water, C02

(d) lead, H₂

 

30. The energy required to be applied to a radioactive nucleus for the emission of a neutron is_____.

(a) 1 MeV

(b) 2.4 MeV

(c) 4.3 MeV

(d) 7.8 MeV

 

31. Out of the following, which one is not an unconventional source of energy ?

a. Tidal power

b. Geothermal energy

c. Nuclear energy

d. Wind power.

 

32. Surge tank is for the protection of____.

a. Dam

b. Spillways

c. Pen stock

d.Headworks

 

33. A thermoelectric engine, which consists of two dissimilar electric conductors connected at two junctions maintained at different temperatures, converts______.

a. Electric energy into heat energy

b. Heat energy into electric energy

c. Mechanical work into electric energy

d. Electric energy into mechanical work

 

34. A steam turbine operating with less moisture is more efficient and less prone to damage the blade.

a. True

b. False

35. The commercial sources of energy are_______.

(a) solar, wind and biomass

(b)fossil fuels, hydropower and nuclear energy

 (c)wood, animal wastes and agriculture wastes

(d)none of the above

 

36. The main source of production of biogas is______.

(a) human waste

(b) wet cow dung

(c) wet livestock waste

(d) all above

 

37. Solar thermal power generation can be achieved by_______.

(a) using focusing collector or heliostates

(b) using flat plate collectors

(c) using a solar pond

(d) any of the above system

 

38. Thorium Breeder Reactors are most suitable for India because________.

(a) these develop more power

(b) its technology is simple

(c) abundance of thorium deposits are available in India

(d) these can be easily designed

 

39. The secondary sources of energy are______.

a. Coal, oil, uranium

b. Wood, animal waste, agriculture waste

c. Wind, biomass, geothermal

d. Solar, wind, water

 

40. The non-commercial sources of energy are______.

a. Solar, wind, biomass

b. Wood, animal waste, agriculture waste

c. Fossil fuels, hydropower, nuclear power

d. None of the above

 

41. Which is an organic matter produced by plants in direct or indirect forms?

a) Solar energy

b) Biomass

c) Wind energy

d) Bio-fuel

 

42. The process of producing energy by utilizing heat trapped inside the earth surface is called_______.

 a) Hydrothermal energy

b) Geo-Thermal energy

c) Solar energy

d) Wave energy

 

43. How much is the average temperature at depth of 10 km of earth surface?

a) 200oC

b) 900oC

c) 650oC

d) 20oC

44. Earth’s outer layer rock is called as __________.

a) Mantle

 b) Crust

c) Outer core

d) Asthenosphere

 

45. The main composition of biogas is _______________ .

a) Methane

b) Carbon dioxide

c) Nitrogen

 d) Hydrogen