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Exam PG 2014 : all

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Swapnil Malewar
Visvesvaraya National Institute of Technology (NIT), Nagpur

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Paper EA3 Energy Auditor Set B NATIONAL CERTIFICATION EXAMINATION 2004 FOR ENERGY AUDITORS PAPER EA3: Energy Efficiency in Electrical Utilities Date: 23.05.2004 Timings: 0930-1230 HRS Duration: 3 HRS Max. Marks: 150 General instructions: o o o o o Please check that this question paper contains 7 printed pages Please check that this question paper contains 65 questions The question paper is divided into three sections All questions in all three sections are compulsory All parts of a question should be answered at one place Section I: OBJECTIVE TYPE (i) (ii) (iii) 1. Answer all 50 questions Each question carries one mark Put a ( ) tick mark in the appropriate box in the answer book In electricity distribution, if the voltage is raised from 11 kV to 22 kV for the same loading conditions, the voltage drop in the distribution system would be lower by a factor of a) 1/2 2. b) 1/4 b) 1/6 c) 1/9 d) none of the above b) lagging power factor d) none of the above Select the location of installing capacitor bank, which will reduce the electricity distribution losses to the maximum extent a) main sub-station bus bars c) motor control centre 5. d) none of the above If the reactive power drawn by a particular load is zero, it means the load is operating at a) unity power factor c) leading power factor 4. c) 1/16 If the voltage level of the electricity distribution system is raised from 11 kV to 33 kV for the same loading conditions, the distribution losses are reduced by a factor of a) 1/3 3. Marks: 50 x 1 = 50 b) distribution board bus bars d) motor terminals A six pole induction motor operating at 50 Hz, will have a synchronous speed of a) 1500 RPM _______________________ Bureau of Energy Efficiency b) 1450 RPM c) 1000 RPM d) 960 RPM 1

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