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2003 Course Power Quality (Elective I)

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Total No. of Questions : 6] P1558 [Total No. of Pages : 3 [3764]-206 B.E. (Electrical) POWER QUALITY (2003 Course) (Elective - I) (403143) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) 6) 7) Answer any three questions from each section. 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) Which are the various stake holders of power quality. Explain various terms of power quality with reference to various stake holders. [6] b) Why power quality issues are becoming important in todays context.[6] c) Explain EMC and emission, immunity terms. [4] OR a) Classify the EMC phenomena as per IEEE std 1159. [10] b) Explain grounding practices recommended by IEEE std 1100 for sensitive electronic equipments. [6] Q2) a) Explain various RMS voltage variations with the help of graphical representation as per IEEE 1159 standard. [10] b) Explain short term (pst) and long term (plt) flicker indices. [8] OR a) Explain flicker, its causes, effects and variation and means to reduce flicker. [12] b) Explain in detail impact of reactive power flow on RMS voltage variations. [6] P.T.O.

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