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Reg No.: Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIFTH SEMESTER B.TECH DEGREE EXAMINATION, DECEMBER 2018

Course Code: EE301
Course Name: POWER GENERATION, TRANSMISSION AND PROTECTION

Max. Marks: 100 Duration: 3 Hours
PART A
Answer all questions, each carriesS marks. Marks
1 With the help of a block diagram explain wind power generation (5)
2 What is transposition of lines? Comment on its necessity in the system. (5)
3 Comment on the effect of wind and ice loading on transmission line with respect (5) to

change in sag calculation.

4 List the advantages and disadvantages of HVDC transmission. (5)
5 Clarify the term duality in terms of amplitude and phase comparators. (5)
6 Discuss the problems associated with capacitive current chopping. (5)
7 State the main types of distribution systems and compare their applications. (5)
8 What is meant by earth fault protection of an alternator? How is it implemented?
(5)
PART 8
Answer any two full questions, each carries 10 marks.

9 a) A proposed station has the following load cycle: (5)

Time in hours: 6-8 8-11 11-16 16-19 19-22 22-24 24-6

LoadinMW: 20 40 50 35 70 40 20

Draw the load curve and select suitable generator units from 10,000, 20,000,

25,000, 30,000 kVA. Prepare the operation schedule for the selected machines and

determine the load factor from the curve.

b) State Skin Effect and Ferranti Effect and elucidate them with necessary diagrams
(5)

10 a) Enlighten upon the various components and their operation in a hydroelectric (5) power

plant for energy production.

b) Derive the expression for capacitance in a single phase overhead line under the (5)
influence of earth effect.

11 a) Mention the merits and demerits of solar power generation in bulk and explain (5) with

respect to live examples.
b) Classify transmission lines according to their length and enlist the line models. (5)

Derive the ABCD constants for medium lines using nominal 7 method.

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