2. Which State in India nuclear accident took place?
Correct : A. tamil nadu
3. Which one of the following medical condition caused by the high exposure of radiation?
Correct : C. mutation
4. What is the main purpose of nuclear energy?
Correct : C. to use it as an alternate source of energy
5. Approximately how many percentage of electricity produced by nuclear power in the world?
Correct : C. 17
6. The use of nuclear energy in the war had devastating effects on humans and on the earth.
Correct : A. true
7. Spillway discharges the overflow water to the downstream side when the reservoir is full.
Correct : A. true
8. Trash racks are built for
Correct : B. preventing the turbine from ingress of floating and other materials
9. Penstock in a hydroelectric power plant is
Correct : C. a conduit connecting forebay to scroll case of turbine
10. The pressure at the inlet or exit of the draft tube should not be
Correct : A. less than one third of atmospheric pressure
11. Draft tube increases the operating head on the turbine.
Correct : A. true
12. Trash racks are located
Correct : D. intake
13. What is the function of booms?
Correct : A. it supports the dam
14. How much is the average temperature at depth of 10 km of earth surface?
Correct : A. 200oc
15. What is hot molten rock called?
Correct : B. magma
16. What does EGS stand for in geothermal energy?
Correct : B. enhanced geothermal system
17. Who invented first geothermal plant?
Correct : B. piero ginori conti
18. A geothermal solution containing appreciable amounts of sodium chloride or other salts is called as
Correct : B. brine
19. Earth’s outer layer rock is called as
Correct : B. crust
20. The hole on earth’s surface from where the steam from the earth comes out is called as
Correct : D. fumarole
21. A spring that shoots jets of hot water and steam into the air is called as
Correct : B. geyser
22. Which kind geothermal plant is most common type?
Correct : B. flash
23. How much is the efficiency of geothermal plant?
Correct : B. 15%
24. The area under the load curve represents
Correct : C. number of units generated
25. Which of the following is equal to the maximum demand?
Correct : C. the peak of the load curve
26. Load duration curve indicates
Correct : D. the number of hours for which the particular load lasts during a day
27. During which time the demand of electrical energy is maximum?
Correct : D. 7 p.m. to 9 p.m
28. Size and cost of installation depends upon
Correct : B. maximum demand
29. What is Demand factor?
Correct : C. ratio of maximum demand to the connected load
30. The load factor is
Correct : A. always less than unity
31. In practice what is the value of diversity factor?
Correct : B. geater than unity
32. Which of the following is called as cold reserve?
Correct : A. reserve capacity available but not ready for use
33. How are moderate active solid wastes disposed?
Correct : A. buried underground
34. Moderate liquid nuclear wastes are disposed into
Correct : A. deep pits
35. How are active liquids of nuclear waste disposed?
Correct : A. stored in concrete tanks and buried underground
36. Can vacated coal mines be used for waste disposal.
Correct : A. true
37. How is High Level solidified nuclear wastes (HLW) stored?
Correct : B. canisters
38. Absorption of radioactive element by human, affects their offspring’s.
Correct : A. true
39. For how many days is radioactive solid waste kept is kept under water at 6m deep for initial cooling?
Correct : D. 100 days
40. What are released into biosphere from nuclear power plants?
Correct : A. gaseous effluents
41. Tailings forms are the residues from
Correct : A. uranium
42. LLW stands for
Correct : C. low level waste
43. What is the unit of Heat rate?
Correct : A. kj/kw
44. Rankine efficiency of a Steam Power Plant
Correct : B. improves in winter as compared to that in summer
45. Which of the following contributes to the improvement of efficiency of Rankine cycle in a Thermal Power Plant?
Correct : D. all of the mentioned
46. What is the actual turbine inlet temperature in Rankine cycle?
Correct : C. 550c
47. Rankine cycle efficiency of a good Steam Power Plant may be in the range of?
Correct : B. 35 to 45%
48. A simple Rankine cycle produces 40 MW of power, 50 MW of process heat and rejects 60 MW of heat to the surroundings. What is the utilization factor of this co generation cycle neglecting the pump work?
Correct : B. 60
49. Which type of boilers use orifice to control the flow circulation?
Correct : B. forced convection boilers
50. What is the advantage of having smaller ratio of water to steam space?
Correct : A. steam can be generated at a faster even if the boiler is cold
51. Which are the major types of boilers that are operated in world today?
Correct : D. once through boiler
52. Cost of nuclear fuel in nuclear power plant economics is considered as
Correct : C. capital cost
53. In economics of nuclear power plant taxes and insurance charges are taken as
Correct : D. fixed cost
54. The land area required for installation of nuclear power plant is
Correct : C. equel to thermal power plant
55. 5 FUEL AND ASH HANDLING
Correct : B. coal ash produced annually accounts for thousands of tones
56. Which system consumes less power out of all ash handling systems?
Correct : A. mechanical ash handling system
57. Natural draught produced by a chimney depends upon
Correct : C. both ‘density of chimney gases’ and ‘height of chimney’
58. In a furnace employing forced draught compared to induced draught
Correct : C. air is sucked in, so air leaks are more and hence furnace efficiency is reduced
59. Which of the following is not a reason of heating feed water?
Correct : D. it produces steam from feed water
60. Mechanical method of water treatment is done to
Correct : B. to remove solid matter and impurities
61. Heat treatment arrangement used to separate or remove deserved gases and impurities from feed water is called the year later.
Correct : A. true
62. Having two separate units for process heat and power is?
Correct : B. useless
63. In a back pressure turbine
Correct : A. pressure at the exhaust from the turbine is the saturation pressure corresponding to the temperature desired in the process
64. The cogeneration plant efficiency nCO if WT, Qi, QH represents turbine work, heat input, heat output respectively is given by?
Correct : D. nco = (wt + qh) / qi
65. Pass-out turbines are used in which of these cases?
Correct : D. both relatively high back pressure and small heating requirement
66. Which of these is a working fluid in the topping plant of a Brayton-Rankine combined plant?
Correct : B. helium
67. To improve the efficiency of the gas turbines, which among these are used?
Correct : D. all of the mentioned
68. Which material is used for the manufacture of the turbine blades?
Correct : C. high nickel alloy
69. Which of the following is a type of Gas Turbine Plant?
Correct : C. open
70. Which among these is the main component of a gas turbine plant?
Correct : B. compressor
71. The maximum steam temperature in a power cycle in degree centigrade is?
Correct : A. 600
72. By superposing a high temperature power plant as a topping unit to the steam plant, the energy conversion efficiency achieved is?
Correct : A. higher
73. Which of these is not a merit of nuclear power?
Correct : B. plant requires a huge amount of area
74. The thermionic generator is essentially which kind of device?
Correct : A. low voltage & high current
75. In an electron beam, the average kinetic energy of an electron is given by
Correct : A. 2kt
76. PWR stands for
Correct : C. pressurized water reactor
77. Select the incorrect statement which supports PWR.
Correct : C. uses natural fuel
78. LWR stands for
Correct : D. light water reactor
79. In which of the Following reactor is heavy hydrogen isotope H-2 is used as moderator?
Correct : C. candu reactor
80. CANDU stands for
Correct : B. canadian natural deuterium uranium
81. GCFBR stands for
Correct : B. gas cooled fast breeder reactor
82. The mass number of an element is not changed, when it emits radiations.
Correct : D. β & γ
83. Which is the most commonly used molten metal for cooling of nuclear reactors?
Correct : C. sodium
84. Fast breeder reactors do not
Correct : C. use th-232 as fissile fuel
85. A boiling water reactor is the one, in which the
Correct : D. coolant water is allowed to boil in the core of the reactor
86. Thermal shield is used in high powered nuclear reactors to
Correct : B. protect the walls of the reactor from radiation damage
87. Where was the first use of nuclear bombs which cause death to the millions of lives?
Correct : C. hiroshima and nagasaki
88. Who made the famous “Atoms for Peace” speech?
Correct : C. dwight d eisenhower
89. How many percentage of fissionable U-235 occurring in uranium?
Correct : C. 0.7%
90. Which is the main source of nuclear radiations?
Correct : A. nuclear power plant
91. Which element of hydroelectric power plant prevents the penstock from water hammer phenomenon?
Correct : D. surge tank
92. Trash racks are built for
Correct : B. preventing the turbine from ingress of floating and other materials
93. The pressure at the inlet or exit of the draft tube should not be
Correct : A. less than one third of atmospheric pressure
94. Which statement about surge tank is wrong?
Correct : C. surge tanks are totally closed to avoid entry of unwanted objects to penstock
95. Trash racks are located
Correct : D. intake
96. How many kinds of Geo thermal steams are there?
Correct : A. 2
97. A geothermal solution containing appreciable amounts of sodium chloride or other salts is called as
Correct : B. brine
98. A spring that shoots jets of hot water and steam into the air is called as
Correct : B. geyser
99. What is the advantage of sectionalizing of power plant?
Correct : A. high reliability
100. Load duration curve indicates
Correct : D. the number of hours for which the particular load lasts during a day