EGEE 420 Exam 2 UPDATED ACTUAL Exam Questions and CORRECT Answers

EGEE 420 Exam 2 UPDATED ACTUAL
Exam Questions and CORRECT Answers
In PEMFC the electrodes are separated by


-anion exchange membrane


-electron exchange membrane


-cation exchange membrane - CORRECT ANSWER - cation exchange membrane


SOFC systems exist in


-one configuration


-three configurations


-two configurations - CORRECT ANSWER - two configurations


The operating temperature of SOFC is


700 - 1000 oC


150 - 200 oC


50 - 100 oC - CORRECT ANSWER - 700 - 1000 oC


In SOFC the ion-conducting electrolyte is

,ZrO2


YSZ


Y2O3 - CORRECT ANSWER - YSZ


The operational temperature of MCFC is around


190 °C


100 °C


650 °C - CORRECT ANSWER - 650 °C


An advantage of SOFC is


-both of these


-high efficiency


-solid electrolyte - CORRECT ANSWER - both of these


The temperature range which is not covered by any of the fuel cell technologies is


150 - 250 °C


600 - 950 °C

, 250 - 600 °C - CORRECT ANSWER - 250 - 600 °C


A disadvantage of PEMFC is


-both of these


-expensive catalyst


-sensitive to fuel impurities - CORRECT ANSWER - both of these


Which is the fuel used in DMFC?


-methanol aqueous solution


-hydrogen


-natural gas - CORRECT ANSWER - methanol aqueous solution


In SOFC, the efficiency of converting fuel to electricity is around


30 - 40%


80 - 85 %


50 - 60 % - CORRECT ANSWER - 50 - 60 %


In H2/O2 PEMFC the catalyst is usually