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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
PDDC- SEMESTER-III EXAMINATION SUMMER 2017
Subject Code: X30904 Date:02/06/2017
Subject Name: Electrical Power
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.
Q.1

Explain hydro power station with schematic diagram.
07

Discuss the advantages and disadvantages of steam power station. Which points are to be considering for site selection of steam power station?
07
Q.2

Explain nuclear power station with diagram.
07

Discuss the advantages and disadvantages of nuclear power station. Write the types of nuclear reactor.
07
OR

What are the advantages of Solar energy? Also discuss its limitations. What are the applications of Solar energy?
07
Q.3

Explain combined cycle power plant.
07

Explain skin effect and proximity effect. Also discuss the significance of these effects in power system.
07
OR
Q.3

Discuss the merits and demerits of wind energy. Write the applications of wind energy.
07

Explain the wind turbine generator for power generation.
07
Q.4

Explain gas turbine power plant with diagram.
07

Explain the types of distribution systems.
07
OR
Q.4

Explain in detail clearly, what you understand by GMR and GMD of a transmission line.
07

Derive the expression for Capacitance per phase of a three phase transmission line with symmetrical spacing.
07
Q.5

What is a substation? Explain classification of substation in detail.
07

What is a power factor? Discuss the disadvantages of low power factor. How power factor is improved?
07
OR
Q.5

What is neutral earthing? Write the types of neutral earthing. Explain any one in detail.
07

Write the function of Economizer Moderator Control rods Surge tank Super heater Spillway Fore bays
07