GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
Enrolment No.
Subject Code: 2140908
BE - SEMESTER-IV (NEW) EXAMINATION - WINTER 2018
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Subject Name: Electrical Power Generation
Time: 02:30 PM TO 05:00 PM
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| 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 | |
| Q.2 | OR | |
| 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 | |
| Q.3 | OR | |
| What is tariff? Discuss three-part tariff. | 07 | |
| Q.4 | (a) Differentiate between Horizontal and Vertical Axis Wind Turbine | 03 |
| (b) Explain the need of hybrid systems. Discuss solar-wind hybrid power system with suitable diagram and also state its advantages. | 04 | |
| (c) Define: (i) solar constant (ii) beam radiation (iii) Diffuse radiation | 07 | |
| Q.4 | OR | |
| (a) Draw and explain the I-V and P-V characteristics of solar photovoltaic cell. | 03 | |
| (b) Derive equation for maximum power of wind turbine. | 04 | |
| (c) What is solar radiation spectrum? | 07 | |
| Q.5 | (a) What are the major components of wind energy conversion systems? | 03 |
| (b) Explain pyranometer with diagram. | 04 | |
| (c) Why is neutral earthing necessary in power system? How can it be classified? | 07 | |
| Q.5 | OR | |
| (a) What is resistance grounding? What are its advantages and disadvantages? | 03 | |
| (b) Write classification of substations. | 04 | |
| (c) Enlist various equipment’s used in substation Compare indoor and outdoor substations. --- Content provided by FirstRanker.com --- Explain arc suppression coil earthing in detail. | 07 | |
Date: 05/12/2018
Total Marks: 70
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