Deck 42: Hybrid Electric Vehicle Safety Procedures

Question 1

A fuel cell produces electricity from _____________ and _____________.

A) Gasoline/oxygen
B) Nitrogen/hydrogen
C) Hydrogen/oxygen
D) Water/oxygen

Answer 1

A fuel cell is an electrochemical device in which chemical energy of hydrogen and oxygen gas is converted into electrical energy.
Hydrogen is an excellent fuel because it has a very high specific energy when compared to an equivalent amount of fossil fuel.
Fuel cell is a hydrogen-oxygen powered battery as hydrogen is not an energy source but is an energy carrier.
Therefore, the correct option is
.

Question 2

How does a fuel cell work?

Answer 2

Fuel cell is a kind of electrochemical cell that converts chemical energy of hydrogen and oxygen into electrical energy.
The chemical reaction in fuel cell is reverse of electrolysis.
Electrolysis is the process in which electrical current is passed through water due to which water break into hydrogen and oxygen.
The energy can be retrieved by letting oxygen and hydrogen to reunite in fuel cell.
The fuel cell is a hydrogen powered battery.
Advantages of fuel cells are listed below:
• A fuel cell can be used to move vehicle by generating electricity to power electric drive motors.
• Fuel cell only emits water vapor and heat this leads to ideal candidate for zero emission vehicle.
• A fuel cell is more energy efficient.
• A fuel cell has few moving parts and thus is very reliable.

Question 3

What are the by-products (emissions) from a fuel cell?

A) Water
B) CO₂
C) CO
D) Nonmethane hydrocarbon

Answer 3

The by-product of a fuel cell is water.
Fuel cell uses hydrogen and water for electricity production, both of these combine
to form water
.
They do not generate any harmful by-products hence, they are ideal for zero-emission vehicle.
Therefore, the correct option is
.

Question 4

What are the advantages and disadvantages of fuel cells?

Question 5

Which type of fuel cell is the most likely to be used to power vehicles?

A) PAFC
B) PEM
C) MCFC
D) SOFC

Question 6

What are the uses of the various types of fuel cells?

Question 7

Which liquid fuel could be used to directly power a fuel cell?

A) Methanol
B) Ethanol
C) Biodiesel
D) Unleaded gasoline

Question 8

How does an ultracapacitor work?

Question 9

Which is not a function of an ultracapacitor?

A) Can pass AC current
B) Can be charged with DC current
C) Discharges DC current
D) Can pass DC current

Question 10

What are the advantages and disadvantages of using hydrogen?

Question 11

Hydrogen is commonly stored at what pressure?

A) 100,000 PSI
B) 50,000 PSI
C) 5,000 PSI
D) 1,000 PSI

Question 12

What alternative power sources could be used for vehicles?

Question 13

Hydrogen storage tanks are usually constructed from _____________.

A) Steel
B) Aluminum
C) Carbon fiber
D) Both b and c

Question 14

HCCI is a process that eliminates what parts or components in a gasoline engine?

A) Fuel tank
B) Battery
C) Fuel injectors
D) Ignition system

Question 15

A plug-in hybrid is different from a conventional hybrid electric vehicle because it has _____________.

A) A built-in battery charger
B) Li Ox batteries
C) More batteries
D) Bigger motor/generator

Question 16

Which energy source(s) is (are) currently being used to help reduce the use of fossil fuels?

A) Hydrogen
B) Wind power
C) Hydroelectric power
D) Both b and c