EGEE 420 Exam 2 UPDATED Exam Questions and CORRECT Answers

EGEE 420 Exam 2 UPDATED Exam
Questions and CORRECT Answers
The operating temperature of a SOFC is:
50-100 C
150-200 C

700-1000 C - CORRECT ANSWER - 700-1000 C


An advantage of SOFC is:
high efficiency
solid electrolyte

both - CORRECT ANSWER - Both


A disadvantage if SOFC is:
CO intolerance
high temp corrosion

catalyst flexibility - CORRECT ANSWER - high temp corrosion


A disadvantage of PEMFC is:
expensive catalyst
sensitive to fuel impurities

both - CORRECT ANSWER - both


in PEMFC the electrodes are separated by:
cation exchange membrane
anion exchange membrane

electron exchange membrane - CORRECT ANSWER - Cation exchange membrane

, The membrane thickness in PEMFC is usually around
fifty nanometers
fifty micrometers

fifty millimeters - CORRECT ANSWER - fifty micrometers


In H2/O2 PEMFC the catalyst is usally:
Pt
Cu

Ni - CORRECT ANSWER - Pt


What type of fuel is used in DMFC?
hydrogen
methanol aqueous solution

natural gas - CORRECT ANSWER - methanol aqueous solution


An advantage of the methanol as fuel in DMFC is:
high power output
inexpensive catalyst

storage and transportation - CORRECT ANSWER - storage and transportation


In AFC the electro-catalyst can be made from:
metal oxides
Ag

Both - CORRECT ANSWER - Both


AFC is intolerant to:
CO2
N2