Generation of electrical power -- Electrical Engineering (MCQ) questions and answers
ELECTRICALGENIE
1.The blade of the gas turbine rotor are made of:
2.A consumer has to pay lesser fixed charge in
3.In Hopkinson demand rate or two part tariff the demand rate or fixed
charge are:
4. The draught which a chimney produces is called
5.In a load-duration curve for an integrated power system the uppermost
crest representation the energy contribution by
6. The voltage of a single solar cell
7. A pilot exciter is provided on generating for which of the following
reasons?
8.Load curve is useful in deciding the
9. The maximum demand of a consumer is 2 Kw and his daily energy
consumption is 20 unit.His load factor is
10.The economizer a component of stream power plants,is a heat-exchange
utilising the water heat of
11.The instantaneous power taken by a balanced three-phase load supplied
from a balanced three phase source is:
12.Vakue of power factor lies in between
13.Why surge tanks are used in hydroelectric power
14.Choose the correct schematic arrangement of nuclear power station.
15.To increase power transfer capability of along transmission line,we
should
16.Pugga valley in Ladakh is suitable for which of the following power
generation?
17.__________is used for non conventional system to generate electrical
energy.
18.Binary vapour cycles are used to
19.The amount of energy available in the wind of the any instant is
proportional to wind speed. )
20.Combined cycle power plants may need
21.The commercial sources of energy are:
22.In India largest thermal power station is located at
23.The percentage O2 by Weight in atmospheric air is
24. The percentage 02 by volume in atmosphere air is
25.The proper indication of incomplete combustion is
26.India’s first nuclear power plant was installed at
27.Thorium Breeder Reactors are most suitable for India because
28. . Solar thermal power generation can be achieved by
29. The overall efficiency of thermal power plant is equal to
30.Rankine cycle efficiency of a good steam power plant may be in the
range of
31.Rankine cycle operating on low pressure limit of p1 and high pressure
limit of p2 ___________
32.Rankine efficiency of a steam power plant
33.In Rankine cycle the work output from the turbine is given by
34.Regenerative cycle thermal efficiency
35.. In a regenerative feed heating cycle, the optimum value of the
fraction of steam extracted for feed heating
36. In a boiler installation the natural draught is produced
37.The maximum percentage gain in Regenerative feed heating cycle
thermal efficiency
38.The draught produced, for a given height of the chimney and given
mean temperature of chimney gases
39. For forced draught system, the function of chimney is mainly
40.A Stream power station has an overall efficiency of 25% and 1 kg of
coal is burnt per KWh of electrical energy generated.Calculate the
Calorific Value of fuel.
Explain:-
41.A 200MW steam station uses coal of calorific value 6400Kcal/kg. Thermal efficiency of the station is 20% and electrical efficiency is 90%.calculate the coal consumption per hour when the station is delivering its Full rated output.
Explain:-
42. A Thermal station has the following data Maximun demand=25000 KW Boiler efficiency =0.80 Overall efficency =0.68 Consumption of coal=0.9Kg/kwh Cost of 1 tonnes of coal =Rs 500 Load Factor=0.4 Determine: Coal bill per annum
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