EGEE 420 Exam 2 2025 Questions and
Answers
The operating temperature of a SOFC is:
50-100 C
150-200 C
700-1000 C - ....ANSWER☑️☑️...-700-1000 C
An advantage of SOFC is:
high efficiency
solid electrolyte
both - ....ANSWER☑️☑️...-Both
A disadvantage if SOFC is:
CO intolerance
high temp corrosion
catalyst flexibility - ....ANSWER☑️☑️...-high temp corrosion
A disadvantage of PEMFC is:
expensive catalyst
sensitive to fuel impurities
both - ....ANSWER☑️☑️...-both
in PEMFC the electrodes are separated by:
cation exchange membrane
anion exchange membrane
FOR STUDY PURPOSES ONLY ©️ 2025 ALL RIGHTS RESERVED 1
, electron exchange membrane - ....ANSWER☑️☑️...-Cation exchange membrane
The membrane thickness in PEMFC is usually around
fifty nanometers
fifty micrometers
fifty millimeters - ....ANSWER☑️☑️...-fifty micrometers
In H2/O2 PEMFC the catalyst is usally:
Pt
Cu
Ni - ....ANSWER☑️☑️...-Pt
What type of fuel is used in DMFC?
hydrogen
methanol aqueous solution
natural gas - ....ANSWER☑️☑️...-methanol aqueous solution
An advantage of the methanol as fuel in DMFC is:
high power output
inexpensive catalyst
storage and transportation - ....ANSWER☑️☑️...-storage and transportation
In AFC the electro-catalyst can be made from:
metal oxides
Ag
Both - ....ANSWER☑️☑️...-Both
AFC is intolerant to:
CO2
N2
FOR STUDY PURPOSES ONLY ©️ 2025 ALL RIGHTS RESERVED 2
Answers
The operating temperature of a SOFC is:
50-100 C
150-200 C
700-1000 C - ....ANSWER☑️☑️...-700-1000 C
An advantage of SOFC is:
high efficiency
solid electrolyte
both - ....ANSWER☑️☑️...-Both
A disadvantage if SOFC is:
CO intolerance
high temp corrosion
catalyst flexibility - ....ANSWER☑️☑️...-high temp corrosion
A disadvantage of PEMFC is:
expensive catalyst
sensitive to fuel impurities
both - ....ANSWER☑️☑️...-both
in PEMFC the electrodes are separated by:
cation exchange membrane
anion exchange membrane
FOR STUDY PURPOSES ONLY ©️ 2025 ALL RIGHTS RESERVED 1
, electron exchange membrane - ....ANSWER☑️☑️...-Cation exchange membrane
The membrane thickness in PEMFC is usually around
fifty nanometers
fifty micrometers
fifty millimeters - ....ANSWER☑️☑️...-fifty micrometers
In H2/O2 PEMFC the catalyst is usally:
Pt
Cu
Ni - ....ANSWER☑️☑️...-Pt
What type of fuel is used in DMFC?
hydrogen
methanol aqueous solution
natural gas - ....ANSWER☑️☑️...-methanol aqueous solution
An advantage of the methanol as fuel in DMFC is:
high power output
inexpensive catalyst
storage and transportation - ....ANSWER☑️☑️...-storage and transportation
In AFC the electro-catalyst can be made from:
metal oxides
Ag
Both - ....ANSWER☑️☑️...-Both
AFC is intolerant to:
CO2
N2
FOR STUDY PURPOSES ONLY ©️ 2025 ALL RIGHTS RESERVED 2
