Deck 91: Fuel Cells and Advanced Technologies

Question 1

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

A)220 to 240
B)440
C)13.8
D)110 to 120

Answer 1

220 to 240

Question 2

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?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Answer 2

Technician B only

Question 3

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?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Answer 3

Technician B only

Question 4

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?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 5

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

A)NOx
B)CO
C)N₂O
D)CO₂

Question 6

Technician A says that fuel cell vehicles may use an electric storage device. Technician B says that fuel cell vehicles that use a storage device to help power the vehicle are called fuel cell hybrid vehicles. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both Technicians A and B
D)Neither technician A nor B

Question 7

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

A)CO
B)Water
C)CO₂
D)None of these

Question 8

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

A)80 to 95 degrees F (27 to 35 degrees C)
B)100 to 110 degrees F (38 to 43 degrees C)
C)68 to 78 degrees F (20 to 26 degrees C)
D)50 to 60 degrees F (10 to 16 degrees C)

Question 9

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?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 10

Technician A says that hydrogen is the fuel source for a fuel cell. Technician B says that hydrogen is an energy carrier for a fuel cell. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 11

What is the most abundant element on earth?

A)Nitrogen
B)Hydrogen
C)Oxygen
D)Water

Question 12

How energy-efficient is a typical internal combustion engine?

A)15-20%
B)5-10%
C)40-60%
D)None of these

Question 13

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

A)Fuel efficiency
B)Well-to-wheel efficiency
C)Coefficient of energy transfer
D)None of these

Question 14

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

A)High cost
B)Insufficient power density
C)Lack of durability
D)All of these are correct.

Question 15

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?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 16

Which fuel cell is best suited to automotive applications?

A)PAFC
B)PEM
C)MCFC
D)None of these

Question 17

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?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 18

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

A)Anode
B)Diode
C)Cathode
D)None of these

Question 19

What type of electrical current does a fuel cell generate?

A)Direct current
B)Alternating current
C)Both A and B
D)Neither A nor B

Question 20

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?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 21

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

A)hydro division
B)Electric induction
C)Electrolysis
D)None of these

Question 22

The chemical reaction in a fuel cell is called electrolysis.