Power System - I (3140914) MCQs

MCQs of Conventional Generation, Load Curves and Tariffs

Showing 61 to 70 out of 425 Questions
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61.
Operating cost of steam power station is
(a) Less than that of nuclear power plants
(b) Less than that of diesel / gas turbine power plants
(c) Less than that of hydro-electric power plants
(d) Is the same as that of nuclear power plant
Answer:

Option (b)

62.
The public sector unit associated with the manufacturing of steam power plant equipment in India is
(a) Bharat Heavy Electricals Limited
(b) National Thermal Power Corporation Limited
(c) Heavy Engineering Corporation
(d) Neyveli Lignite Corporation
Answer:

Option (a)

63.
Public sector undertaking associated with erection and commissioning of steam power plants in India is
(a) Indian Electricity Authority
(b) National Thermal Power Corporation Limited
(c) Bharat Coking Coal Limited
(d) Coal India Limited
Answer:

Option (b)

64.
Steam power plants work closely on
(a) Binary vapour cycle
(b) Brayton cycle
(c) Rankine cycle
(d) Carnot cycle
Answer:

Option (c)

65.
Rankine cycle efficiency of a steam power plant is in the range of
(a) 20 – 30 %
(b) 30 – 45 %
(c) 45 – 60 %
(d) 60 – 80 %
Answer:

Option (b)

66.
In Rankine cycle, the work output from a turbine is given by
(a) Change of enthalpy between inlet and outlet
(b) Change in internal energy between inlet and outlet
(c) Change of entropy between inlet and outlet
(d) Change in temperature between inlet and outlet
Answer:

Option (a)

67.
Binary vapour cycles are used for
(a) Increasing the turbine efficiency
(b) Improving the condenser performance
(c) Improving the plant efficiency
(d) All of above
Answer:

Option (c)

68.
Binary vapour cycles are not being adopted because
(a) Initial cost of such plants is high
(b) Such plants are suitable high load factors only
(c) Pipes of thicker sections are required
(d) Ideal vapours are not available
Answer:

Option (a)

69.
The overall efficiency of a thermal power station is equal to
(a) Efficiency of rankine cycle
(b) Efficiency of regenerative cycle
(c) Efficiency of binary vapour cycle
(d) Product of boiler efficiency, turbine efficiency and generator efficiency
Answer:

Option (d)

70.
Rankine cycle operating between pressure limits of P1 and P2 has thermal efficiency
(a) Lower than that carnot cycle operating between same pressure limits
(b) Higher than that of carnot cycle operating between same pressure limits
(c) Same as that of carnot cycle operating between same pressure limits
(d) None of above
Answer:

Option (b)

Showing 61 to 70 out of 425 Questions
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