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16th National Certification Exam Energy Managers & Auditors SEPTEMBER 2015 Paper 3

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Jawaharlal Nehru Technological University (JNTUH), Hyderabad

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Paper 3 Set A REGULAR 16th NATIONAL CERTIFICATION EXAMINATION FOR ENERGY MANAGERS & ENERGY AUDITORS September, 2015 PAPER 3: Energy Efficiency in Electrical Utilities Date: 20.09.2015 Timings: 0930-1230 HRS Duration: 3 HRS Max. Marks: 150 General instructions: o o o o o Please check that this question paper contains 8 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: OBJECTIVE TYPE Marks: 50 x 1 = 50 i) Answer all 50 questions ii) Each question carries one mark iii) Please hatch the appropriate oval in the OMR answer sheet with Black Pen or HB pencil 1. Which of the following is not a part of vapour compression refrigeration cycle: a) compressor 2. b) evaporator b) low load side power factor d) undersize conductors Which loss in a distribution transformer is dominating; if the transformer is loaded at 68% of its rated capacity a) core loss 4. b) copper loss c) hysteresis loss d) magnetic field loss When evaporator temperature is reduced a) refrigeration capacity increases c) specific power consumption remains same 5. d) absorber Which of the following can be attributed to commercial loss in electrical distribution system a) lengthy low voltage lines c) faulty consumer service meters 3. c) condenser b) refrigeration capacity decreases d) compressor will stop What is the function of drift eliminators in cooling towers a) maximize water and air contact b) capture water droplets escaping with air stream c) enables entry of air to the cooling tower d) eliminates uneven distribution of water into the cooling tower 6. Trivector meter measures three vectors representing a) active, reactive and maximum demand c) active, harmonics and maximum demand _______________________ Bureau of Energy Efficiency b) active, power factor and apparent power d) active, reactive and apparent power 1

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