Exam 91: Fuel Cells and Advanced Technologies

Technician A says that fuel cells produce large amounts of heat. Technician B says that fuel cell energy production creates "low grade" heat. Which technician is correct?

Technician A says that fuel cell cooling systems can use heat exchangers with small surface areas. Technician B says that fuel cell cooling systems must use heat exchangers with large surface areas. Which technician is correct?

Which fuel cell is best suited to automotive applications?

Technician A says that PAFC fuel cells can use hydrogen as fuel. Technician B says that PEM fuel cells can use hydrogen as fuel. Which technician is correct?

The negative electrode in a fuel cell is called the ________.

What is the most abundant element on earth?

Technician A says that electrons in a fuel cell flow from the cathode to the anode. Technician B says that electrons in a fuel cell flow from the anode to the cathode. Which technician is correct?

Technician A says that hydrogen may be found by itself in nature. Technician B says that hydrogen has better specific energy than fossil fuels. Which technician is correct?

How energy-efficient is a typical internal combustion engine?

A level 2 charger for an electric vehicle operates at ________ volts as a voltage source.

High-voltage batteries work best when kept within what temperature range?

What term describes the process of passing electrical current through water to break it into oxygen and hydrogen?

What type of electrical current does a fuel cell generate?

According to the text, what gas can disable the catalyst if it contaminates the PEM fuel cell?

Technician A says that fuel cells are categorized according to the type of electrolyte used. Technician B says that all fuel cells operate most efficiently at 500 deg F. Which technician is correct?

Which term describes the entire fuel cycle, from the time a fuel is extracted or produced until it is spent in the vehicle?

The chemical reaction in a fuel cell is called electrolysis.

Technician A says that a fuel cell stack consists of a number of fuel cells connected in parallel. Technician B says that a fuel cell stack consists of a number of fuel cells connected in series. Which technician is correct?

Which of the following describes why fuel cell technology is NOT in mass production?

Which of the following is produced during the fuel cell energy production process?