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1
LAXMI INSTITUTE OF TECHNOLOGY SARIGAM
COURSE FILE
Faculty Name : PATEL PINKAL RAGHUBHAI
Subject Name : ELECTRICAL POWER
GENERATION
Subject Code : 2140908
Course Name : B.E (Electrical Engineering)
Semester : 4TH
Session : Dec-April 2019
DEPARTMENT OF ELECTRICAL ENGINEERING
2
Institutional Vision To educate the unreached talents to beacon the nation through research and
innovative technology
Institutional Mission ● To impart seamless education to individual scholars for delivering the highest
quality professionalism and cutting edge research for the benefit of society on a
national and global scale.
● To foster and maintain mutually beneficial partnerships with our alumni,
friends, industry, and local, state, and central governments through public
services assistance and collaborative research.
● To be the centre of excellence for creating holistic citizens inculcated with
ethical, moral and social values in diverse culture of Indian environment.
Departmental Vision
To become a trailblazer in providing education and training in the field of
Electrical Engineering to the ambitious graduates to be proficient in their career.
Departmental Mission
To provide education of high global standards with the able guidance of
dedicated professionals and a state of art ambience.
To motivate the electrical engineers to focus on the eco-friendly renewable
sources of energy.
To impart quality education for enhancing opportunities
3
4
DEPARTMENT OF ELECTRICAL ENGINEERING
CLASS TIME-TABLE
SEM: 4th
EC-(C-243) TERM: Dec - April 2019 W.E.F: 17/12/2018
DAY↓ TIME→
08:20
to
09:10
09:10
to
10:00
10:10
to
11:00
11:00
to
11:50
12:00
to
12:50
12:50
to
01:35
Monday SUBJECT
FACULTY
ACM(BPD)1(M/C LAB)
EPG(PNP)2(EW/S LAB)
S&S(RA)3(C 249)
FT(SB) ATHE (AAS) DE(NM) SS (RA)
Tuesday SUBJECT
FACULTY
DE(NM)1(C 247)
S&S(RA)2(C 249)
EPG(PNP)3(EW/S LAB)
EPG (PNP) SS (RA) FT(SB) ATHE(AAS)
Wednesday SUBJECT
FACULTY DE(NM) SS(RA) ATHE(AAS) FT(SB) EPG(PNP) ACM (BPD)
Thursday SUBJECT
FACULTY ACM(BPD) DE(NM)
EPG(PNP)1(EW/S LAB)
ACM((BPD)2(M/C LAB)
DE(NM)3(C 247) FT(SB) EPG(PNP)
Friday SUBJECT
FACULTY SS(RA) FT(SB) DE(NM) ACM(BPD)
S&S(RA)1(C 249)
ACM((BPD)3(M/C LAB)
DE(NM)2(C 247)
Saturday SUBJECT
FACULTY ACM (BPD) EPG(PNP) ACM(BPD) SS(RA) DESIGN ENGG.(RA)
Laxmi Institute of Technology , Sarigam Approved by AICTE, New Delhi; Affiliated to Gujarat Technological University, Ahmadabad
Academic Year : 2018-2019
5
SCHEME
SYLLABUS
Unit Topics Teaching
Hours
Module
Weightage
1 INTRODUCTION:
Amount of generation of electric power from Conventional and
non conventional sources of energy in Gujarat and India and
some developed countries of the world.
1 0
2 STEAM POWER STATION:
Schematic arrangement, advantages and disadvantages, choice
of site, efficiency of steam power station, Types of prime
movers, characteristic, speed control & auxiliaries.
Environmental aspects for selecting the sites and locations of
thermal power stations.
4 8
3 HYDRO POWER STATION:
Schematic arrangement, advantages and disadvantages, choice
of site constituents of hydro power plant, Hydro turbine.
Environmental aspects for selecting the sites and locations of
hydro power stations
3 6
4 NUCLEAR POWER STATION:
Schematic arrangement, advantages and disadvantages,
selection of site, types of reactors, Hazards, Environmental
aspects for selecting the sites and locations of nuclear power
stations.
3 6
5 DIESEL POWER STATION:
Introduction, Schematic arrangement, advantages and
disadvantages, Choice and characteristic of diesel engines,
auxiliaries.
3 6
6 GAS TURBINE POWER PLANT: 3 6
Semester Course Title Course Code Theory Paper
L T P
4 Electrical Power
Generation
2140908 4 0 2 70
6
Schematic arrangement, advantages and disadvantages of Gas
turbine power plant. Open cycle and Closed cycle gas turbine
power plant, Combined cycle power plant, Comparison of
various power plants
7 TARIFF AND ECONOMIC ASPECTS IN POWER
GENERATION:
Terms commonly used in system operation, various factors
affecting cost of generation: Load curves, load duration curves,
Connected load, maximum load, Peak load, base load and peak
load power plants, load factor, Plant capacity factor, Plant use
factor, Demand factor, diversity factor, Cost of power plant,
Tariffs
5 10
8 POWER GENERATION BY NON CONVENTIONAL
ENERGY SOURCES:
Introduction: Need of Renewable energy Fossil fuel based
systems
Impact of fossil fuel based systems
Non-conventional energy – seasonal variations
availability Renewable energy – sources and features
Distributed energy systems and dispersed generation (DG)
3 6
9 PHOTOVOLTAIC POWER CONVERSION SYSTEMS:
Solar radiation spectrum.
Radiation measurement
Applications of solar thermal systems 1. Heating 2.
Cooling 3. Drying 4. Distillation 5. Power generation
Solar Photovoltaic (SPV) systems 1. Operating principle
2. Photovoltaic cell concepts 3. Types of solar cells,
fabrication of SPV cells 4. Cell, module, array (Series and
parallel connections) 5. SPV system components and their
characteristics, applications 6. Block diagram of general
SPV system 7. Battery sizing and Array sizing
Applications of Solar Photovoltaic systems 1. Battery
charging 2. Pumping 3. Lighting.
Green Building (Solar – thermal, Solar – PV) 1. Sizing
residential systems 2. Batteries and Inverters.
Present Status of PV in India.
Governmental incentives, Numerical
8 16
7
10 WIND POWER CONVERSION SYSTEM:
Introduction to wind energy
basic principles of wind energy conversion
forces on the blade
power in the wind – maximum power
wind energy conversion – wind data and (qualitative
treatment only) energy estimation
Basic components of wind energy conversion systems
classifications of WECS-HAWT, VAWT, Geared wind
power plants (WPPs), direct-drive WPPs and Hybrid (semi
geared) WPPs
Schemes of electric generation
Squirrel Cage Induction Generators (SCIG), wound rotor
(WRIG), doubly-fed (DFIG), wound rotor synchronous
generator (WRSG), Permanent magnet synchronous
generator (PMSG)
Comparison/ advantages and disadvantages of WECS.
Site selection considerations. Numerical
9 16
11 SUBSTATION:
Classification of Substations, substation equipments,
Specification and selection of equipments, Site selection of
substation
5 10
12 NEUTRAL EARTHING:
Introduction, isolated neutral, earth neutral systems-solid,
resistance, reactance. Arc suppression coil, voltage transformer
and earthing, transformer, earthing systems
5 10
8
List of Reference Books
S.No Book Title Author Publication
1 A course in electrical machine Design A chakrabarti,
M. L Soni, P.
V. Gupta, U.
S. Bhatnagar
Dhanpat Rai
Publication
2 Renewable Energy Technologies Solanki,
Chetan S
PHI Learning,
New Delhi, 2011
3 Wind Power Technology Earnest,
Joshua
PHI Learning,
New Delhi, 2013
4 Renewable Energy Sources for Sustainable
Development
N.S. Rathore
and N. L.
Panwar
New India
Publishing
Agency, New
Delhi
5 Wind Power in Power System Thomas
Ackermann
John Willey
&Sons, 2005
6 Renewable Energy Resources J. Twidell and
T. Weir
E & F N Spon
Ltd, London,
1999
7 Electric Power Generation: Transmission and
Distribution
S. N. Singh PHI Learning,
New Delhi, 2011
8 Electrical Power Dr. S.L. Uppal
9
Laxmi Institute of Technology , Sarigam Approved by AICTE, New Delhi; Affiliated to Gujarat Technological University, Ahmadabad
Department of Electrical Engineering Academic Year : 2018 -2019
ASSIGNMENT – I
Name of the Subject: Electrical Power Generation Date: 08.01.2019
Subject Code : 2140908
S. No Question Remarks
1. Compare conventional energy souce with non conventional
energy sources.
2. Explain the schematic of steam power station in detail with
necessary diagram.
3. Discuss the factor are affect for site selection of thermal power
station.
4. For steam power plant explain the function of: (a) air pre
heater, (b) cooling tower, (c) ESP, (d) ID fan, (e) super heater,
(f) boiler feed pump.
5. Draw and explain schematic arrangement and it's various
component for a hydro power station.
6. Explain the diffrent type of turbine used in hydro power station.
7. Discussed the point to be consider in locationg the site of hydro
power plant. Write the advantages and disadvantages of hydro
power plant.
Date of Submission: 21.01.2019
Name & Sign of Subject In-charge: Pinkal Patel
10
Laxmi Institute of Technology , Sarigam Approved by AICTE, New Delhi; Affiliated to Gujarat Technological University, Ahmadabad
Department of Electrical Engineering Academic Year : 2012 -2019
ASSIGNMENT – II
Name of the Subject: Electrical Power Generation Date: 15.01.2019
Subject Code: 2140908
S. No Question Remarks
1. What is nuclear reactor? Describe the various part of nuclear
reactor
2. Enlist different type of nuclear reactor. Explain working of
pressurized water nuclear reactor with suitable diagram.
3. Draw and explain schematic arrangement of diesel power plant.
Give the advantages and disadvantages of diesel power plant.
4. Explain the working of a closed cycle gas turbine power plant
with a schematic diagram.
5. Give schematic arrangement and explain the working of
combined cycle gas power plant.
Date of Submission: 23.01.2019
Name & Sign of Subject In-charge: Pinkal Patel
11
Laxmi Institute of Technology , Sarigam Approved by AICTE, New Delhi; Affiliated to Gujarat Technological University, Ahmadabad
Department of Electrical Engineering Academic Year : 2012 -2019
ASSIGNMENT – III
Name of the Subject: Electrical Power Generation Date: 19.02.2019
Subject Code: 2140908
S. No Question Remarks
1. Define (i) Connected load (ii) Plant capacity factor (iii)
Diversity factor (iv) Maximum load (v) Plant use factor (vi)
Base load (vii) load curve.
2. What is tariff? Discuss three part tariff
3. What are the sources and features of renewable energy sources?
4. Write advantages of distributed generation
5. Define: (i) solar constant (ii) beam radiation (iii) Diffuse
radiation
6. Define solar cell efficiency. Explain solar photovoltaic cell
principle. Discuss current–voltage (I-V) characteristic of solar
PV cell
Date of Submission: 02.03.2019
Name & Sign of Subject In-charge: Pinkal Patel
12
Laxmi Institute of Technology , Sarigam Approved by AICTE, New Delhi; Affiliated to Gujarat Technological University, Ahmadabad
Department of Electrical Engineering Academic Year : 2012 -2019
ASSIGNMENT – IV
Name of the Subject: Electrical Power Generation Date: 07.03.2019
Subject Code: 2140908
S. No Question Remarks
1. Derive equation for maximum power of wind turbine.
2. What are the major components of wind energy conversion
systems?
3. Differentiate between Horizontal and Vertical Axis Wind
Turbine
4. Write classification of substations
5. What are the disadvantages of single bus bar scheme? Draw
duplicate bus bar scheme and explain its advantages
6. Why is neutral earthing necessary in power system? How can it
be classified?
7. What are the different methods of neutral grounding? Explain
solid grounding. State its advantage and disadvantages.
8. Explain arc suppression coil earthing in detail.
Date of Submission: 12.03.2019
Name & Sign of Subject In-charge: Pinkal Patel
13
Laxmi Institute of Technology , Sarigam Approved by AICTE, New Delhi; Affiliated to Gujarat Technological University, Ahmadabad
QUESTION BANK
CHAPTER 1
1. What is energy? Write various sources of energy.
2. Compare conventional energy souce with non conventional energy sources.
CHAPTER 2
1. For a steam power station, explain functions of: (i) Air Pre Heater (ii) Cooling Tower
(iii)Economizer
2. Write advantages and disadvantages of Steam power station.
3. Define overall efficiency and thermal efficiency of thermal power station. Why thermal
power station overall efficiency is low?
4. Explain working of thermal power station with labelled schematic diagram. Also state
disadvantages of thermal power station.
5. Discuss the factors are affect for site selection of thermal power Station.
CHAPTER 3
1. Draw and explain neat schematic arrangement of Hydro power station and discuss
function of its constituents.
2. Explain the essential factors which influence the choice of site for a hydro-electric plant.
3. Explain the different types of turbine used in hydro power station
4. Explain the functions of the following : (i)Dam (ii) spillways (iii) surge tank (iv) draft
tube.
5. What is meant by water hammering effect? How it is minimized with the help of surge
tank?
CHAPTER 4
14
1. Explain the essential factors which influence the choice of site for a nuclear power
station.
2. Explain the difference between fusion reaction and fission reaction.
3. Draw block diagram of nuclear power station and explain working of nuclear station
including chain reaction.
4. Enlist different types of nuclear reactors. Explain working of pressurized water nuclear
reactor with suitable diagram.
5. What are the advantages of nuclear power plants? Also write problems associated with it.
6. What is nuclear reactor? Describe the various parts of nuclear reactor.
CHAPTER 5
1. Draw and explain schematic arrangement of diesel power plant.
2. Give advantages and disadvantages of diesel power plant.
CHAPTER 6
1. Why starting motor is used in gas turbine power station? What is the main difference
between open cycle and combine cycle gas power plant?
2. Compare thermal, hydro and nuclear power stations with respect to capital cost, running
cost and standby losses
3. Explain types of gas turbine power plant with diagram. Why compressor is use in gas
turbine power plant?
CHAPTER 7
1. Determine load factor at which the cost of supplying a unit of electricity from a Diesel
and from a Steam station is same if the annual fixed and running charges are as follows :
Diesel Fixed Rs. 300/kW Running Rs. 0.25/kWh Steam Fixed Rs. 1200/kW Running Rs.
0.0625/kWh
2. Define (i) Connected load (ii) Plant capacity factor (iii) Diversity factor (iv) Maximum
load (v) Plant use factor (vi) Base load (vii) load curve.
3. What is tariff? Discuss three part tariff
4. A thermal power station has a maximum demand of 15MW. The annual load factor is
60% and plant capacity factor is 50%. Determine the reserve capacity of the plant.
CHAPTER 8
1. What are the sources and features of renewable energy sources?
2. Write advantages of distributed generation
15
3. Explain Distributed energy systems and Dispersed generation (DG).
CHAPTER 9
1. Define: (i) solar constant (ii) beam radiation (iii) Diffuse radiation
2. Draw and explain the I-V and P-V characteristics of solar photovoltaic cell.
3. What is solar radiation spectrum?
4. Explain pyranometer with diagram.
5. Define solar cell efficiency. Explain solar photovoltaic cell principle. Discuss current–
voltage (I-V) characteristic of solar PV cell
CHAPTER 10
1. Differentiate between Horizontal and Vertical Axis Wind Turbine
2. Explain the need of hybrid systems. Discuss solar-wind hybrid power system with
suitable diagram and also state its advantages.
3. Derive equation for maximum power of wind turbine.
4. What are the major components of wind energy conversion systems?
5. What is total wind power density? State the name of different wind electrical generation
schemes.
CHAPTER 11
1. Write classification of substations
2. Enlist various equipment’s used in substation
3. Compare indoor and outdoor substations.
4. What are the disadvantages of single bus bar scheme? Draw duplicate bus bar scheme
and explain its advantages
CHAPTER 12
1. Why is neutral earthing necessary in power system? How can it be classified?
2. What is resistance grounding? What are its advantages and disadvantages?
3. Explain arc suppression coil earthing in detail.
4. What is arcing ground? Explain arc suppression coil (Resonant) grounding.
5. What are the different methods of neutral grounding? Explain solid grounding. State its
advantage and disadvantages.
6. Define grounding. What are the advantages of neutral grounding?
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–IV (NEW) - EXAMINATION – SUMMER 2017
Subject Code: 2140908 Date: 06/06/2017 Subject Name: Electrical Power Generation Time: 10:30 AM to 01:00 PM Total Marks: 70 Instructions:
1. Attempt all questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks.
Q.1 Short Questions 14
1 A nuclear power plant is invariably used as a
(a) peak load plant, (b) base load plant, (c) spinning reserve plant, (d) any of the
above
2 Surge tank is provided for the protection of ……….
3 As steam expands in turbine
(a) its pressure increases, (b) its specific volume increases, (c) its boiling point
increases, (d) its temperature increases.
4 The equipment installed in power plants to reduce air pollution due to smoke is
(a) Induced draft fans, (b) De-super heaters, (c) Electrostatic precipitators,
(d) Re-heaters.
5 Which of the following material can be used as a moderator?
(a) Graphite, (b) Heavy water, (c) Beryllium, (d) Any of the above.
6 A gas turbine works on ………… cycle.
7 Which of the following is not a source of power?
(a) Thermocouple, (b) Photovoltaic cell, (c) Solar cell, (d) Photoelectric cell
8 Most of the solar radiation received on the earth surface is within the range of:
(a) 0.25 to 0.4 micron, (b) 0.4 to 0.8 microns, (c) 0.6 to 0.95 microns, (d) 0.1 to
0.25 microns
9 What is the maximum power efficiency of wind energy system?
10 What is diversity factor?
11 What is plant use factor?
12 What is the difference between system earthing and equipment earthing?
13 For annual compound interest of 8%, sinking fund factor after 20 years will be
………..
14 When single line to earth fault occurs on an ungrounded neutral system, the
capacitive fault current becomes ……. times the normal per phase capacitive
current. (a) 1, (b) 0, (c) 3, (d) √3.
Q.2 (a) Explain the points to be considered while selecting a site for steam power station. 03
(b) Draw the schematic arrangement of diesel power station. 04
(c) Classify the hydro turbine according to operating heads. Explain the hydro turbine
used for high operating heads. 07
OR
(c) With related to steam power station, explain the working of following in detail:
Air pre-heater, Boiler, Super heater, Condenser, Feed water heater, Coal and Ash
handling plant, Boiler Feed Pump.
07
Q.3 (a) List the main stages of nuclear power station stages. Explain any one of the stage 03
2
*************
in detail.
(b) Explain the working principle of closed cycle gas turbine power plant with its
schematic arrangement. 04
(c) A consumer takes a steady load of 250 kW at a power factor of 0.8 lagging for 10
hours per day and 300 days per annum. Which one of the following annual tariffs
would be suitable for this consumer?
Tariff 1: Rs. 1.20 per kWh + Rs. 1,200 per kVA per annum
Tariff 2: Rs. 1.00 per kWh + Rs. 1,200 per kW per annum + 25 paise per kVARh
07
OR
Q.3 (a) Draw the neat schematic arrangement of a nuclear power station. 03
(b) A hydro station has to operate with a mean head of 39 meters and supplied from a
reservoir at the rate of 94 m3/sec. If density of water is 1000 kg/m3 and plant
efficiency is 80%, determine (a) actual plant capacity in MW and (b) yearly actual
output in MWH.
(Hint: Gross plant capacity = 9.81 * water head * weight of water)
04
(c) The load on a power plant on a typical day is as under:
Time 12 NIGHT –
5 AM
5 AM – 9
AM
9 AM –
6 PM
6 PM –
10 PM
10 PM – 12
NIGHT
Load
(MW) 20 40 80 100 20
Plot the load curve and load duration curve. Find the load factor of the plant and
the energy supplied by the plant in 24 hours.
07
Q.4 (a) What are the sources and features of renewable energy sources? 03
(b) List the advantages and disadvantages of Wind Energy Conversion System. 04
(c) Explain working principle, cell concept and block diagram of Solar Photovoltaic
(SPV) system. 07
OR
Q.4 (a) Explain Distributed energy systems and Dispersed generation (DG). 03
(b) What is solar radiation spectrum? Explain direct and diffused radiation. 04
(c) Explain the working of horizontal and vertical axis wind turbines. 07
Q.5 (a) Enlist the application of solar photovoltaic system. Explain any one of them. 03
(b) A 33 kV, 3-phase, 50 Hz, 60 km transmission line has a capacitance to ground of
each line equal to 0.015 μF per km. Determine the inductance and kVA rating of
the Peterson coil.
04
(c) Classify the sub-stations according to service requirement and constructional
features. Compare outdoor substation and indoor substation. 07
OR
Q.5 (a) Discuss the scheme of electrical generation for wind energy system. 03
(b) Explain the importance and specifications of the following equipments applicable
in sub-station: Main bus, Power transformer, Isolators, Circuit Breakers 04
(c) Explain resistance grounding and voltage transformer earthing with their
advantages and disadvantages. 07
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–IV (NEW) EXAMINATION – WINTER 2017
Subject Code: 2140908 Date:21/11/2017 Subject Name: Electrical Power Generation Time: 02:30 PM TO 05:00 PM Total Marks: 70 Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1* (a) For a steam power plant, explain functions of: (i) Air Pre Heater (ii)
Cooling Tower (iii)ESP. 03
(b) Explain the essential factors which influence the choice of site for a
hydro-electric plant. 04
(c) Enlist different types of nuclear reactors. Explain working of
pressurized water nuclear reactor with suitable diagram. 07
Q.2 (a) Why is the overall efficiency of a steam power station very low? 03
(b) Discuss advantages and disadvantages of diesel power plant. 04
(c) Define (i) Connected load (ii) Plant capacity factor (iii) Diversity factor
(iv) Maximum load (v) Plant use factor (vi) Base load (vii) Peak load. 07
OR
(c) Determine load factor at which the cost of supplying a unit of
electricity from a Diesel and from a Steam station is same if the annual
fixed and running charges are as follows :
Diesel Fixed Rs. 300/kW Running Rs. 0.25/kWh
Steam Fixed Rs. 1200/kW Running Rs. 6.25/kWh
07
Q.3 (a) Differentiate between open and closed gas turbine cycles. 03
(b) Discuss the role of distributed generation in electric power system. 04
(c) Explain in brief geared, direct drive and hybrid Wind Power Plant and
give their comparison. 07
OR
Q.3 (a) Write advantages of distributed generation. 03
(b) Differentiate between Horizontal and Vertical Axis Wind Turbine. 04
(c) Give schematic arrangement and explain the working of combined
cycle gas power plant. 07
Q.4 (a) Discuss advantages and disadvantages of Nuclear power stations. 03
(b) Draw and explain the I-V and P-V characteristics of solar photovoltaic
cell. 04
(c) Explain construction and working of DFIG. 07 OR
Q.4 (a) Explain working principle of solar photovoltaic cell. 03
(b) What are the major components of wind energy conversion systems? 04
(c) Explain concept of green building using solar energy. 07
Q.5 (a) Enlist various equipment’s used in substation.
03
(b) Compare outdoor and indoor substations. 04
(c) Explain arc suppression coil earthing in detail. 07
2
OR
Q.5 (a) Why is neutral earthing necessary in power system? How can it be
classified? 03
(b) What is a transformer sub-station? What are the different types of
transformer sub-stations? Illustrate your answer with a suitable block
diagram.
04
(c) Explain construction & working of solar refrigeration plant with suitable
figure. 07
*************
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–IV (NEW) - EXAMINATION – SUMMER 2018
Subject Code:2140908 Date:24/05/2018 Subject Name:Electrical Power Generation Time:10:30 AM to 01:00 PM Total Marks: 70 Instructions:
1. Attempt all questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Define grounding. What are the advantages of neutral grounding? 03
(b) Define overall efficiency and thermal efficiency of thermal power
station. Why thermal power station overall efficiency is low? 04
(c) Explain working of thermal power station with labelled schematic
diagram. Also state disadvantages of thermal power station. 07
Q.2 (a) Why starting motor is used in gas turbine power station? What is the
main difference between open cycle and combine cycle gas power
plant?
03
(b) Draw block diagram of nuclear power station and explain working
of nuclear station including chain reaction. 04
(c) Explain working of hydro power station with suitable schematic
diagram and discuss functions of its constituents. 07
OR
(c) What is tariff? Discuss types of tariff. 07
Q.3 (a) Compare thermal, hydro and nuclear power stations with respect to
capital cost, running cost and standby losses. 03
(b) A thermal power station has a maximum demand of 15MW. The
annual load factor is 60% and plant capacity factor is 50%.
Determine the reserve capacity of the plant.
04
(c) List the solar thermal system applications and explain working of
natural circulation solar water heating system. 07
Q.3 (a) Define: (i) Load factor (ii) Maximum demand (iii) Plant capacity
factor. 03
(b) Draw a well-labelled diagram of horizontal axis wind turbine
(HAWT) generator. What is the function of yaw control and pitch
control mechanism?
04
(c) What is solar photovoltaic system? Discus its major components.
Also state its applications. 07
Q.4 (a) Define: (i) solar constant (ii) beam radiation (iii) Diffuse radiation 03
(b) Draw and explain working of direct type solar dryers. 04
(c) Explain the need of hybrid systems. Discuss solar-wind hybrid
power system with suitable diagram and also state its advantages 07
OR
Q.4 (a) What is total wind power density? State the name of different wind
electrical generation schemes. 03
(b) Discuss the advantages and disadvantages of diesel power station.
Also state applications of diesel power stations. 04
(c) Define solar cell efficiency. Explain solar photovoltaic cell
principle. Discuss current–voltage (I-V) characteristic of solar PV
cell.
07
2
Q.5 (a) Discuss the components of substation in brief. 03
(b) What are the different methods of neutral grounding? Explain solid
grounding. State its advantage and disadvantages. 04
(c) Write classification of substations. 07
OR
Q.5 (a) Compare indoor and outdoor substations. 03
(b) What are the disadvantages of single bus bar scheme? Draw
duplicate bus bar scheme and explain its advantages. 04
(c) What is arcing ground? Explain arc suppression coil (Resonant)
grounding. 07
*************
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–IV (NEW) EXAMINATION – WINTER 2018
Subject Code:2140908 Date:05/12/2018 Subject Name:Electrical Power Generation Time: 02:30 PM TO 05:00 PM Total Marks: 70 Instructions:
1. Attempt all questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks.
MARKS
Q.1 (a) For a steam power station, explain functions of: (i) Air Pre Heater (ii) Cooling
Tower (iii)Economizer 03
(b) Explain the essential factors which influence the choice of site for a nuclear
power station. 04
(c) Draw and explain neat schematic arrangement of Hydro power station and
discuss function of its constituents. 07
Q.2 (a) Write advantages and disadvantages of Steam power station. 03
(b) Differentiate between open cycle gas turbine and closed cycle gas turbine. 04
(c) Draw and explain schematic arrangement of diesel power plant. Give
advantages and disadvantages of diesel power plant. 07
OR
(c) Determine load factor at which the cost of supplying a unit of electricity from
a Diesel and from a Steam station is same if the annual fixed and running
charges are as follows :
Diesel Fixed Rs. 300/kW Running Rs. 0.25/kWh
Steam Fixed Rs. 1200/kW Running Rs. 0.0625/kWh
07
Q.3 (a) What are the sources and features of renewable energy sources? 03
(b) Explain the difference between fusion reaction and fission reaction. 04
(c) Define (i) Connected load (ii) Plant capacity factor (iii) Diversity factor (iv)
Maximum load (v) Plant use factor (vi) Base load (vii) load curve. 07
OR
Q.3 (a) What is tariff? Discuss three part tariff. 03
(b) Differentiate between Horizontal and Vertical Axis Wind Turbine 04
(c) Explain the need of hybrid systems. Discuss solar-wind hybrid power system
with suitable diagram and also state its advantages. 07
Q.4 (a) Define: (i) solar constant (ii) beam radiation (iii) Diffuse radiation 03
(b) Draw and explain the I-V and P-V characteristics of solar photovoltaic cell. 04
(c) Derive equation for maximum power of wind turbine. 07
OR
Q.4 (a) What is solar radiation spectrum? 03
(b) What are the major components of wind energy conversion systems? 04
(c) Explain pyranometer with diagram. 07
Q.5 (a) Why is neutral earthing necessary in power system? How can it be classified? 03
(b) What is resistance grounding? What are its advantages and disadvantages? 04
(c) Write classification of substations. 07
OR
Q.5 (a) Enlist various equipment’s used in substation 03
(b) Compare indoor and outdoor substations. 04
(c) Explain arc suppression coil earthing in detail. 07 **************