Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 4th Sem New 2140908 Electrical Power Generation Previous Question Paper
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 e quipm e nt?s used in substation 03
(b) Compare indoor and outdoor substations. 04
(c) Explain arc suppression coil earthing in detail. 07
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This post was last modified on 20 February 2020