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8th National Certification Exam Energy Managers & Auditors MAY 2009 Paper 2

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Jawaharlal Nehru Technological University (JNTUH), Hyderabad

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Paper 2 Set A Key Regn No: _________________ Name: ___________________ (To be written by the candidates) 8th NATIONAL CERTIFICATION EXAMINATION MAY, 2009 FOR ENERGY MANAGERS & ENERGY AUDITORS Paper 2: Energy Efficiency in Thermal Utilities Date: 23.05.2009 Timings: 1400 to 1700 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 (i) (ii) (iii) 1 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 The amount of theoretical air required for complete combustion of one ton of coal as compared to that required for one ton of fuel oil is: a) higher 2 d) none of the above 2 b) remain saturated d) be a mixture of 50% steam and 50% condensate The unit of specific gravity in SI system is ___________ 3 b) kgf/m 3 c) kg/m 2 d) no unit In a furnace, an oxygen rich combustion air (Oxygen 30% vol. and Nitrogen 70% vol) is supplied instead of normal air (oxygen 21% vol. and Nitrogen 79% vol). By maintaining the other parameters same, the % age of carbon dioxide in the flue gases will be a) same 5 c) equal 2 a) N/m 4 b) lower If saturated steam at a pressure of 20 Kg/cm (a) is reduced to 10 Kg/cm (a), through a pressure reducing valve, the steam will a) condense c) get superheated 3 Marks: 50 x 1 = 50 b) lower c) higher d) zero What type of steam is generally used for electrical power generation? 1 _____________________ Bureau of Energy Efficiency

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