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13th National Certification Exam Energy Managers & Auditors SEPTEMBER 2012 Paper 2

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Jawaharlal Nehru Technological University (JNTUH), Hyderabad

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Click Here & Upgrade PDF Complete Expanded Features Unlimited Pages Documents Paper 2 - Set A Solutions 13th NATIONAL CERTIFICATION EXAMINATION FOR ENERGY MANAGERS & ENERGY AUDITORS - September 2012 PAPER 2: Energy Efficiency in Thermal Utilities Date: 15.9.2012 Timings:14:00-17:00Hrs Duration:3 Hrs Section I: OBJECTIVE TYPE (i) (ii) 1. Marks: 50 x 1 = 50 Answer all 50 questions Each question carries one mark Steam mains are run with a slope primarily to a) avoid water hammer c) avoid condensation of steam 2. 2 2 less than the saturation temperature at 3 kg/cm g 2 more than the saturation temperature at 3 kg/cm g 2 equal to the saturation temperature at 3 kg/cm g equal to the saturation temperature at 3.3 kg/cm2 g The mineral matter in coal after combustion mostly becomes a) carbon dioxide 5. b) reduces fuel costs d) increases boiler blow down If 10% air is entrained in a steam system at 3 kg/cm g then the saturation temperature of steam will be a) b) c) d) 4. b) increase the velocity of steam d) reduce radiation and convection losses Which of the following is not true of condensate recovery? a) reduces water charges c) increases boiler output 3. b) carbon monoxide c) nitrous oxide d) ash Conditioning of coal with water in certain boilers is done to a) increase unburnt losses c) minimize losses of fine coal particles 6. Max.Marks:150 b) increase GCV d) increase convection heat transfer Which of the following is false? a) LPG vapour is twice as light as air b) LPG is a mixture of propane and butane c) LPG is a gas at normal atmospheric pressure d) LPG is required to be odorized 7. , Of the following fuels which will have the highest carbon content? a) furnace oil _________________________ Bureau of Energy Efficiency b) coal c) natural gas d) paddy husk 1

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