Q.1.
The reactions in the catalyst layers are endothermic; therefore, heat must be transported into the cell.
Q.2.
A PEM fuel cell stack is made up of bipolar plates, ____________, and end plates.
Q.3.
Which layer distribute fuel and oxidant within the cell, separate the individual cells in the stack, collect the current, carry water away from each cell, humidify gases, and keep cells cool?
Q.4.
How many regions can the polarization curve be divided?
Q.5.
Which region voltage losses occur when the electrochemical reactions are slow to produce current?
Q.6.
Which region is due to mass transport limitations where the rates of the electrochemical reactions within the catalyst layers are hindered by a lack of reactants?
Q.7.
Increasing the number of cells in the stack (connected in series) increases the ____________.
Q.8.
Increasing the surface area of the cells increases the ____________.
Q.9.
Which inventors developed the PEM fuel cell technology at General Electric?
Q.10.
Who was the Father of Fuel Cells?
Q.11.
Which one below is not a major reason to develop automotive fuel cell technology?
Q.12.
Most automobiles use PEM fuel cells and what other type of fuel cells?
Q.13.
What refueling option the US Department of Energy supports?
Q.14.
The ___________ fuel cell uses potassium hydroxide as the electrolyte.
Q.15.
The ___________ fuel cell is a poor ionic conductor at lower temperatures.
Q.16.
Which type of fuel cell has electrolyte made of a liquid solution of lithium, sodium and potassium carbonates?
Q.17.
Which type of fuel cell operates at the highest operating temperature (degrees Fahrenheit)?
Q.18.
A process that uses waste energy to produce heat or electricity.
Q.19.
The ___________ fuel cell does not run on hydrogen.
Q.20.
Methanol offers _______ times the energy per volume compared to hydrogen.