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9th National Certification Exam Energy Managers & Auditors DECEMBER 2009 Paper 3

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Jawaharlal Nehru Technological University (JNTUH), Hyderabad
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Paper 3 Set A Solutions Regn No: _________________ Name: ___________________ (To be written by the candidate) 9th NATIONAL CERTIFICATION EXAMINATION December, 2009 FOR ENERGY MANAGERS AND ENERGY AUDITORS PAPER 3: Date: 20.12.2009 Energy Efficiency in Electrical Utilities Timings: 0930-1230 HRS Duration: 3 HRS Max. Marks: 150 General instructions: o o o o o Please check that this question paper contains 15 printed pages Please check that this question paper contains 64 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: (i) (ii) (iii) OBJECTIVE TYPE Marks: 50 x 1 = 50 Answer all 50 questions Each question carries one mark Please hatch the appropriate oval in the OMR answer sheet with Black Pen or HB pencil, as per instructions 1 In the city electrical distribution scheme, a proposal is being prepared to upgrade 33 kV network to 66 kV. The distribution loss, corresponding to the same quantum of load in the proposed upgraded system will be a) less by 25% c) less by 75% 2 b) less by 33% d) none of the above Rating of power factor correction capacitors at induction motor terminals should be a) 100% of no load magnetizing kVAr of induction motor b) 90% of no load magnetizing kVAr of induction motor c) 120% of no load magnetizing kVAr of induction motor d) none of the above 3 Select the correct statement: a) the advantage of PF improvement by capacitor addition in an electric network is that active power component of the network is reduced b) the power factor indicated in the monthly electricity bill is the lowest power factor recorded at any time during the billing month _______________________ Bureau of Energy Efficiency 1

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