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2003 Course Fuel Cell Technology (Theory)

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Total No. of Questions : 12] P1369 [Total No. of Pages : 3 [3764]-340 B.E. (Chemical) FUEL CELL TECHNOLOGY (2003 Course) (409348) (Theory) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) 6) 7) Answers to the two sections should be written in separate books. Neat diagrams must be drawn wherever necessary. Figures on the right indicate full marks. Use of logarithmic tables, Mollier charts, electronic pocket calculator and steam tables is allowed. Assume suitable data, if necessary. Write the chemical reactions wherever necessary. All questions are compulsory. SECTION - I Q1) a) Explain the feasibility of application of fuel cell vehicles vis- -vis battery operated vehicles in transportation. [8] b) Explain the thermodynamic aspects involved in a fuel cell. [8] OR Q2) a) Explain the salient features of the storage of hydrogen as a fuel for fuel cell. [8] b) Explain schematically the working principle of Phosphoric Acid Fuel Cell (PAFC). [8] Q3) Gibbs free energy for the formation of water vapor is 55.14 cal/mole at STP condition. In the typical SOFC, pure ethane is fed at the pressure of 2 atm. Total pressure of gases on anodic side of the fuel cell is observed to be 2.5 atm. Air is supplied at 1.4 atm. Fuel and air is supplied at the same operating temperature of 850 C. Faraday s constant is 96486 J/(V.mol). Calculate : [18] a) Standard open circuit potential. b) Open circuit potential at the operating conditions. c) What will be the effect if the operating temperature is increased to 1000 C? OR P.T.O.

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