RTU 2016 Question Paper Semester IV Electrical Engineering Generation of Electrical Power

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F{ B.Tech. IV-Sem (Main & Back) Examl June-July 2016
$ Electrical Engineering
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\t 4B.E,4A Generation of Electrical power

Time: 3 Hours Maximum Marks: 80
Min. Passing Marks (Main & Back): 26
Min. Passing Marks (Old Back): 24
Instructians to Candidate s : -

Attempt any five questions, selecting one question .from each unit. Alt
Questions carry equal marks. schematic diagrams must be shown
wherever necessary. Any data you feel missing suitably be assumed and
stated clearly.
units of quantities used,/ calculated must be stated clearty.
use of following supporting material is permitted during examination.
(Mentioned in form No.205 )
l. Calculator 2. Graphpapet

UNIT.I :
Q'l (a) Draw and explain an open cycle gas turbine plant with regeneration, intercooling
and reheating also differentiate the open cycle & closed cycle gas turbine
plant.
t8l
(b) Discuss why
t8I
(i) The overall station efficiency of a thermal plant is very low.
(ii) Steam Turbines have a number of stages.
(iii) Maximum thermal plants use pulverized coal.
(iv) It is necessary to heat the water before feeding it to the boiler.

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OR
Q.1 (a) Explain the various types of Reactors used in nuclear power plant also explain
the basic plant layout of nuclear power plant. t8l
(b) Discuss the economic feasibility of a pUmped storage scheme of on hydro power
plant also classified the different type of hydro electric plants. I8l

Q.2 (a) Discuss the Impact of nuclear and gas power plant on environment. Also explain

the green house effect. t8l
(b) Draw & explain the scheme of solar electrical energy generation also discuss the
current energy scenario of India. t8l
OR
Q.2 (a) Draw & explain the scheme of Wind Power generation. Also discuss the
sustainable energy system. t8l
(b) Differentiate the renewable and non - renewable energy sources. Also draw the
layout of the tidal generation. t8l

UNIT.III
Q.3 (a) The load curve of an electrical system is linear with the following values at
different times of the day. t8l

Time 12 5Am 9 6Pm 8Pm 10 t2
Load(mw) 50 50 100 100 150 80 50

Plot chronological load curve. Find the energy required by the system in one day
and the system daily load factor.

(b) Calculate the most economic power factor when
(i) When KW Demand is Constant
(ii) When KVA Demand is Constant t8l

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Q'3 (a) A load of 500KW at 0.8 Power ,ffi hgging is taken by industriar concern. The
tariff is { 400 per KVA of maximum demand per year + 100 paise
per KWh. The
cost of installation of capacitor banks is { 600 per year
and the Interest and
depreciation is 112o. Find:
tSl
(i) The most economic power factor
(ii) Rating of capacitor bank to improve the power factor to this value.
(b) Explain the following:
t8l
(i) Group Diversity factor
(ii) Load factor
(iii) Utilizationfacror
(iv) Capacity factor
UNIT-IV
Q'4 (a) Determine the generation cost per unit of energy from the following plant data
Installed capacity = 120 MW
Capital cost of plant = t40000 per kw
Interest & deprecat ion = l5Vo

Fuel consumption = 0.64kgl kwh
Fuel cost = < 1500 per l000kg

Salaries' wages & other operation cost per annum
= t 50,000,000
Peak load = l00MW

Load factor = 60Va
t8l
(b) what are the different Cogeneration Technologies? Explain.
t8l
OR
Q.4 (a) Explain the different method to calculate the deprecation of a plant in details.
t8l
(b) Write short note on
t8l
(i) EnergyConservation
(ii) Off peak energy utilization
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UNIT.V
Q.s (a) Explain the following forms of Tariff briefly t8l
(i) Flat Demand Rate
(ii) Straight meter Rate
(iii) Block meter Rate
(iv) Two Part tariff
o) Give the comparison between thermal, hydro nuclear & gas Power Plant. t8]
OR
Q.s (a) An Industrial coiisumer has single-phase 230Y supply. His monthly energy
consumption is 2020kwh. A maximum demand indicator installed at his premises
indicates 40A which is charged at unity power factor for 2 hours daily at < 3.50
per kwh. The remaining units are charged at { 1.80 per kwh. Find his monthly

bill (for 30 days) and average tariff per kwh. t8l
(b) What are the different factors, which governs the size and location of a Thermal
Power Plant? t8l

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