150 + Mcqs in Power Plant Engineering Page 2 McqOptions

51.	/_In nuclear fission?
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
Answer» B. The electrons of the element change

Discussion

52.	/_A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be?
A.	Stable under nuclear radiation
B.	Corrosion resistant
C.	Good thermal conductor
D.	All of these
Answer» E.

Discussion

53.	/_A nuclear reactor is said to be critical when the neutron population in the reactor core is?
A.	Rapidly increasing leading to the point of explosion
B.	Decreasing from the specified value
C.	Reduced to zero
D.	Constant
Answer» E.

Discussion

54.	/_Fast breeder reactor uses?
A.	Boiler
B.	Direct cycle of coolant system
C.	Double circuit system of coolant cycle
D.	Multi passes system
Answer» D. Multi passes system

Discussion

55.	/_The unit of radioactivity is?
A.	Electron volt
B.	Electron ampere
C.	Curie
D.	MV
Answer» D. MV

Discussion

56.	/_The efficiency of a nuclear power plant in comparison to a conventional thermal power plant is?
A.	Same
B.	More
C.	Less
D.	May be less or mote depending on size
Answer» D. May be less or mote depending on size

Discussion

57.	/_Amongst the following, the fissionable materials are?
A.	U‚Äö√á√á‚Äö√á√â‚Äö√á√â and Pu‚Äö√á√á‚Äö√á√á‚Äö√á√¢
B.	U‚Äö√á√á‚Äö√á√â‚Äö√á√Ö and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√â
C.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√ñ
D.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√¢
Answer» B. U‚Äö√á√á‚Äö√á√â‚Äö√á√Ö and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√â

Discussion

58.	%_Fast breeder reactor uses_%
A.	Boiler
B.	Direct cycle of coolant system
C.	Double circuit system of coolant cycle
D.	Multi passes system
Answer» D. Multi passes system

Discussion

59.	%_In nuclear fission_%
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
Answer» B. The electrons of the element change

Discussion

60.	%_Natural uranium is made up of_%
A.	99.282% U‚Äö√á√á‚Äö√á√â‚Äö√á√ , 0.712% U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ, 0.006% U‚Äö√á√á‚Äö√á√â‚Äö√á√ë
B.	99.282% U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ, 0.712% U‚Äö√á√á‚Äö√á√â‚Äö√á√ , 0.06%' U‚Äö√á√á‚Äö√á√â‚Äö√á√ë
C.	99.282% U‚Äö√á√á‚Äö√á√â‚Äö√á√ë, 0.712% U‚Äö√á√á‚Äö√á√â‚Äö√á√ , 0.006% U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ
D.	99.282% U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ, 0.712% U‚Äö√á√á‚Äö√á√â‚Äö√á√ë, 0.006% U‚Äö√á√á‚Äö√á√â‚Äö√á√
Answer» B. 99.282% U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ, 0.712% U‚Äö√á√á‚Äö√á√â‚Äö√á√ , 0.06%' U‚Äö√á√á‚Äö√á√â‚Äö√á√ë

Discussion

61.	%_Which is not identical for an atom and an isotope?_%
A.	Mass number
B.	Atomic number
C.	Chemical properties
D.	Position in periodic table
Answer» B. Atomic number

Discussion

62.	%_Superheated steam is generated in following reactor_%
A.	Boiling water
B.	Gas cooled
C.	Pressurised water
D.	All of the above
Answer» C. Pressurised water

Discussion

63.	%_Breeder reactor has a conversion ratio of_%
A.	Unity
B.	More than unity
C.	Less than unity
D.	Zero
Answer» C. Less than unity

Discussion

64.	%_The size of the reactor is said to be critical when_%
A.	Chain reaction can be initiated
B.	It becomes uncontrollable
C.	It explodes
D.	It produces no power
Answer» B. It becomes uncontrollable

Discussion

65.	_ A nuclear reactor is said to be critical when the neutron population in the reactor core is$?
A.	Rapidly increasing leading to the point of explosion
B.	Decreasing from the specified value
C.	Reduced to zero
D.	Constant
Answer» E.

Discussion

66.	_ The efficiency of a nuclear power plant in comparison to a conventional thermal power plant is$?
A.	Same
B.	More
C.	Less
D.	May be less or mote depending on size
Answer» D. May be less or mote depending on size

Discussion

67.	_ Amongst the following, the fissionable materials are$?
A.	U‚Äö√á√á‚Äö√á√â‚Äö√á√â and Pu‚Äö√á√á‚Äö√á√á‚Äö√á√¢
B.	U‚Äö√á√á‚Äö√á√â‚Äö√á√Ö and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√â
C.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√ñ
D.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√¢
Answer» B. U‚Äö√á√á‚Äö√á√â‚Äö√á√Ö and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√â

Discussion

68.	_ The material most commonly used for shielding is$?
A.	Carbon
B.	Lead
C.	Concrete
D.	All of these
Answer» D. All of these

Discussion

69.	_ The unit of radioactivity is$?
A.	Electron volt
B.	Electron ampere
C.	Curie
D.	MV
Answer» D. MV

Discussion

70.	_ A fission chain reaction in uranium can be developed$?
A.	By increasing the contents of U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ
B.	By slowing down fast neutrons so that U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ fission continues by slow neutron
C.	Both (A) and (B)
D.	None of these
Answer» D. None of these

Discussion

71.	_ A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be$?
A.	Stable under nuclear radiation
B.	Corrosion resistant
C.	Good thermal conductor
D.	All of these
Answer» E.

Discussion

72.	__Boiling water reactor employs__
A.	Boiler
B.	Direct cycle of coolant system
C.	Double circuit system of coolant cycle
D.	Multi passes system
Answer» C. Double circuit system of coolant cycle

Discussion

73.	__Reflector in nuclear plants is used to__
A.	Return the neutrons back into the core
B.	Shield the radioactivity completely
C.	Check pollution
D.	Conserve energy
Answer» B. Shield the radioactivity completely

Discussion

74.	__Plutonium is produced__
A.	As basic raw material
B.	By neutron irradiation of Uz
C.	By neutron irradiation of thorium
D.	Artificially
Answer» C. By neutron irradiation of thorium

Discussion

75.	__Plutonium (Pu‚Äö√á√á‚Äö√á√â‚Äö√á√¢) is produced__
A.	Artificially
B.	By fission of Th‚Äö√á√á‚Äö√á√â‚Äö√á√á
C.	When U‚Äö√á√á‚Äö√á√â‚Äö√á√ is irradiated by neutrons
D.	As basic raw material
Answer» D. As basic raw material

Discussion

76.	__Each fission of U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ produces following number of fast neutrons per fission__
A.	1 neutron
B.	3 neutrons
C.	1, 2 neutrons
D.	2 neutrons
Answer» E.

Discussion

77.	__In the breeder reactors the generation of new fissionable atom is__
A.	At the lower rate than the consumption
B.	At a higher rate than the consumption
C.	At an equal rate of the consumption
D.	Depends on other considerations
Answer» C. At an equal rate of the consumption

Discussion

78.	__In natural uranium, the constituents of three naturally occurring isotopes are__
A.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ë = 0.006%, U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ = 0.712% and U‚Äö√á√á‚Äö√á√â‚Äö√á√ = 99.282%
B.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ë = 0.712%, U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ = 0.006% and U‚Äö√á√á‚Äö√á√â‚Äö√á√ = 99.282%
C.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ë = 99.282%, U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ = 0.006% and U‚Äö√á√á‚Äö√á√â‚Äö√á√ = 0.712%
D.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ë = 0.006%, U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ = 99.282% and U‚Äö√á√á‚Äö√á√â‚Äö√á√ = 0.712%
Answer» B. U‚Äö√á√á‚Äö√á√â‚Äö√á√ë = 0.712%, U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ = 0.006% and U‚Äö√á√á‚Äö√á√â‚Äö√á√ = 99.282%

Discussion

79.	_The total energy released in fission of U is$?
A.	5 MeV
B.	10 MeV
C.	199 MeV
D.	168 MeV
Answer» D. 168 MeV

Discussion

80.	_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
Answer» D. Medium energy neutrons

Discussion

81.	_Which of the following can be used as a coolant in nuclear plant?$?
A.	Light or heavy water
B.	Molten lead
C.	Carbon dioxide
D.	Freon
Answer» B. Molten lead

Discussion

82.	_Electron volt is the unit of$?
A.	Atomic power
B.	Energy
C.	Voltage
D.	Radio activity
Answer» C. Voltage

Discussion

83.	_A fast breeder reactor uses following as fuel$?
A.	Enriched uranium
B.	Plutonium
C.	Thorium
D.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ
Answer» E.

Discussion

84.	_The most commonly used moderator in nuclear plants is$?
A.	Heavy water
B.	Concrete and bricks
C.	Graphite and concrete
D.	Graphite
Answer» E.

Discussion

85.	_Reactors for propulsion applications are designed for$?
A.	Any form of uranium
B.	Natural uranium
C.	Enriched uranium
D.	Plutonium
Answer» D. Plutonium

Discussion

86.	_In triggering fission, which types of neutrons are more effective?$?
A.	Fast
B.	Slow
C.	In bulk
D.	Static
Answer» C. In bulk

Discussion

87.	_A fast breeder reactor uses$?
A.	90% U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ
B.	U‚Äö√á√á‚Äö√á√â‚Äö√á√
C.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ
D.	Pu‚Äö√á√á‚Äö√á√â‚Äö√á√¢
Answer» B. U‚Äö√á√á‚Äö√á√â‚Äö√á√

Discussion

88.	_Pressurized water reactor is designed$?
A.	For boiling pi water in the core
B.	To use liquid sodium metal as coolant
C.	To use intermediate coolant
D.	To prevent the water coolant from boiling in the core
Answer» E.

Discussion

89.	_Gas cooled reactor uses following materials as moderator, and coolant$?
A.	Graphite, CO2
B.	Graphite, air
C.	Heavy water, CO2
D.	Lead, H2
Answer» B. Graphite, air

Discussion

90.	_The commonly used material for shielding is$?
A.	Lead or concrete
B.	Lead and tin
C.	Graphite or cadmium
D.	Thick galvanized sheets
Answer» B. Lead and tin

Discussion

91.	_Reflector in nuclear power plants _________ neutron leakage.$?
A.	Increases
B.	Decreases
C.	Have no effect on
D.	None of these
Answer» C. Have no effect on

Discussion

92.	_In a thermal power plant, coal from the coal handling plant is moved to the boiler bunker through a$?
A.	Belt conveyor
B.	Bucket conveyor
C.	Fork lift truck
D.	Overhead crane
Answer» B. Bucket conveyor

Discussion

93.	_Which of the following are ferrite materials?$?
A.	U‚Äö√á√á‚Äö√á√â‚Äö√á√â and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√¢
B.	U
C.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√¢
D.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ and Th‚Äö√á√á‚Äö√á√â‚Äö√á√¢
Answer» C. U‚Äö√á√á‚Äö√á√â‚Äö√á√ and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√¢

Discussion

94.	The secondary fuel used in nuclear power plants is$?
A.	U‚Äö√á√á‚Äö√á√â‚Äö√á√â and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√¢
B.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ and Th‚Äö√á√á‚Äö√á√â‚Äö√á√á
C.	U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√
D.	U‚Äö√á√á‚Äö√á√â‚Äö√á√â and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√
Answer» B. U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ and Th‚Äö√á√á‚Äö√á√â‚Äö√á√á

Discussion

95.	Moderator in nuclear plants is used to$?
A.	Reduce temperature
B.	Extract heat from nuclear reaction
C.	Control the reaction
D.	Cause collision with the fast moving neutrons to reduce their speed
Answer» E.

Discussion

96.	The energy released during the fission of one atom of Uranium 235 in million electron volts is about$?
A.	100
B.	200
C.	300
D.	400
Answer» C. 300

Discussion

97.	Plutonium (Pu239) is produced$?
A.	Artificially
B.	When U238 is irradiated by neutrons
C.	By fission of Th232
D.	As basic raw material
Answer» C. By fission of Th232

Discussion

98.	In boiling water reactor, moderator is$?
A.	Coolant itself
B.	Ferrite rod
C.	Graphite rod
D.	Liquid sodium metal
Answer» B. Ferrite rod

Discussion

99.	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
Answer» B. Fast breeder reactor

Discussion

100.	The energy produced by a thermal reactor of same size as a breeder reactor is$?
A.	Almost same
B.	Slightly more
C.	Slightly less
D.	Much less
Answer» E.

Discussion

Explore topic-wise MCQs in Mechanical Engineering.

*/*_In nuclear fission?

*/*_A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be?

*/*_A nuclear reactor is said to be critical when the neutron population in the reactor core is?

*/*_Fast breeder reactor uses?

*/*_The unit of radioactivity is?

*/*_The efficiency of a nuclear power plant in comparison to a conventional thermal power plant is?

*/*_Amongst the following, the fissionable materials are?

%_Fast breeder reactor uses_%

%_In nuclear fission_%

%_Natural uranium is made up of_%

%_Which is not identical for an atom and an isotope?_%

%_Superheated steam is generated in following reactor_%

%_Breeder reactor has a conversion ratio of_%

%_The size of the reactor is said to be critical when_%

_ A nuclear reactor is said to be critical when the neutron population in the reactor core is$?

_ The efficiency of a nuclear power plant in comparison to a conventional thermal power plant is$?

_ Amongst the following, the fissionable materials are$?

_ The material most commonly used for shielding is$?

_ The unit of radioactivity is$?

_ A fission chain reaction in uranium can be developed$?

_ A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be$?

__Boiling water reactor employs__

__Reflector in nuclear plants is used to__

__Plutonium is produced__

__Plutonium (Pu‚Äö√á√á‚Äö√á√â‚Äö√á√¢) is produced__

__Each fission of U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ produces following number of fast neutrons per fission__

__In the breeder reactors the generation of new fissionable atom is__

__In natural uranium, the constituents of three naturally occurring isotopes are__

_The total energy released in fission of U is$?

_U235 will undergo fission by$?

_Which of the following can be used as a coolant in nuclear plant?$?

_Electron volt is the unit of$?

_A fast breeder reactor uses following as fuel$?

_The most commonly used moderator in nuclear plants is$?

_Reactors for propulsion applications are designed for$?

_In triggering fission, which types of neutrons are more effective?$?

_A fast breeder reactor uses$?

_Pressurized water reactor is designed$?

_Gas cooled reactor uses following materials as moderator, and coolant$?

_The commonly used material for shielding is$?

_Reflector in nuclear power plants _________ neutron leakage.$?

_In a thermal power plant, coal from the coal handling plant is moved to the boiler bunker through a$?

_Which of the following are ferrite materials?$?

The secondary fuel used in nuclear power plants is$?

Moderator in nuclear plants is used to$?

The energy released during the fission of one atom of Uranium 235 in million electron volts is about$?

Plutonium (Pu239) is produced$?

In boiling water reactor, moderator is$?

A reactor capable of converting a ferrite material into fissile isotopes is called$?

The energy produced by a thermal reactor of same size as a breeder reactor is$?

/_In nuclear fission?

/_A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be?

/_A nuclear reactor is said to be critical when the neutron population in the reactor core is?

/_Fast breeder reactor uses?

/_The unit of radioactivity is?

/_The efficiency of a nuclear power plant in comparison to a conventional thermal power plant is?

/_Amongst the following, the fissionable materials are?

Boiling water reactor employs

Reflector in nuclear plants is used to

Plutonium is produced

Plutonium (Pu‚Äö√á√á‚Äö√á√â‚Äö√á√¢) is produced

Each fission of U‚Äö√á√á‚Äö√á√â‚Äö√á√ñ produces following number of fast neutrons per fission

In the breeder reactors the generation of new fissionable atom is

In natural uranium, the constituents of three naturally occurring isotopes are