EGEE 420 Exam 2 2025 Questions and Answers

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




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, both - ....ANSWER ...-both


in PEMFC the electrodes are separated by:

cation exchange membrane

anion exchange membrane


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




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