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2003 Course Power Quality (Elective I)

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Total No. of Questions : 12] P1158 [Total No. of Pages : 2 [3664]-183 B.E. (Electrical) POWER QUALITY (Elective - I) (2003 Course) (403143) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) 6) 7) Answer 3 questions from Section I and 3 questions from Section II. Answers to the two sections should be written in separate books. Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Your answers will be valued as a whole. Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. Assume suitable data, if necessary. SECTION - I Q1) a) Explain why power quality issues are gaining importance in today s context. [8] b) Explain various definition of power quality with reference to each stake holder of power quality. Explain the EMC term. [8] OR Q2) a) Define with graphical representation various RMS voltage Variations as per IEEE Std 1159-1995. [10] b) Explain grounding, its purpose and good practices to avoid failure or malfunction of equipments. [6] Q3) a) Explain various causes, effects and solutions of over voltage and under voltage. [10] b) Explain impact of reactive power management on voltage profile. [6] OR Q4) a) Explain voltage flicker, various causes of flicker and techniques for flicker mitigation. [12] b) Explain complex power. [4] P.T.O.

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