Deck 14: Alternative Fuel and Advanced Technology Vehicles

Question 1

Hybrid electric vehicles use two sources of power to operate.

Answer 1

True

Question 2

What is used to convert DC voltage to AC?

A) inverter
B) converter
C) reverter
D) power splitter

Answer 2

A

Question 3

All of the following are types of batteries used today for vehicles EXCEPT ____.

A) lead acid
B) nickel-metal hydride
C) lithium ion
D) alkaline

Answer 3

D

Question 4

The United States and Canada have the smallest stores of natural gas in the world.

Question 5

Propane accounts for less wear on engine parts than gasoline.

Question 6

CNG has an octane rating between 87 and 93.

Question 7

HD-5 LPG is made with 5% propane and 95% butane.

Question 8

Retrofitted vehicles are those that have been converted to run on a different fuel than originally designed.

Question 9

What is lightly refined natural gas stored under high pressure?

A) CNG
B) CNC
C) RNG
D) LRNGHP

Question 10

What may the Prius gas engine do at a stop or very low speeds to conserve fuel?

A) stay at idle
B) shut off
C) drop off one cylinder
D) drop off two cylinders

Question 11

Technician A says that open loop fuel systems have no way of detecting whether the amount of fuel delivered was ideal for the driving conditions. Technician B says that closed loop systems use oxygen sensors to provide feedback to the PCM. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 12

Technician A says that the high voltage cables on an HEV are colored bright yellow. Technician B says that the battery electrolyte in a nickel metal hybrid battery can be neutralized with vinegar. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 13

Quarter-turn valves allow fuel flow when they are parallel to the line.

Question 14

Technician A says that CNG cylinders must be removed from service 15 years after the date of manufacture in the USA. Technician B says that minor repairs are allowed on CNG cylinders in the USA. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 15

Hybrid electric vehicles are limited in range by their batteries.

Question 16

Mobile sources contribute to 51% of the carbon monoxide pollution.

Question 17

Technician A says that the pistons in an LPG engine are substantially different than that of a typical engine of a gasoline-powered vehicle. Technician B says that LPG engines are built nearly the same as gasoline-powered engines. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 18

Where is the lead acid battery located in the Prius?

A) LR of trunk
B) engine compartment
C) under driver's seat
D) RF wheel well

Question 19

Technician A says that electric vehicles are classified as ZEV. Technician B says that electric vehicles are limited in range by their batteries. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 20

E85 is made of 85% ethanol and 15% petroleum.

Question 21

What type of vehicle is designed to be able to run on either gasoline or a methanol or ethanol blend, M85 or E85?

Question 22

For what does the acronym SULEV stand?

Question 23

How does a series system HEV propel itself?

Question 24

The Atkinson cycle design improves fuel mileage by:

A) Increasing compression ratio
B) Keeping the intake valve open longer
C) Opening both valves a greater distance
D) Increasing valve overlap

Question 25

Technician A says LPG can be used with both diesel and gasoline powered engines. Technician B says the LPG must be blended with gasoline on start-up, then the engine can run on LPG. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 26

For what does the acronym CARB stand?

Question 27

What kind of vehicles were designed to run on one type of alternative fuel?

Question 28

How are the wheels driven in a dual parallel system HEV?

Question 29

Technician A says regenerative braking takes the place of the traditional brake system on HEVs. Technician B says regenerative braking uses kinetic energy during acceleration to recharge the high-voltage battery. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 30

Ethanol can be made from all of the following EXCEPT ____.

A) soy beans
B) corn
C) wheat
D) sugar cane

Question 31

Technician A says that CNG tanks are labeled with a serial number. Technician B say that CNG tanks must have a date of manufacture. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 32

CNG tanks may be made of all of the following EXCEPT ____.

A) copper
B) aluminum
C) steel
D) composites

Question 33

Technician A says that leather mechanics gloves can protect you from high voltage electrical shock on an HEV. Technician B says that latex surgical gloves must be used on an HEV to protect you from high voltage shock. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 34

Why should only specially trained technicians attempt to service hybrid electric vehicles?

Question 35

All of the following are bi-fuel combinations except:

A) Gasoline and CNG
B) Propane and gasoline
C) E85 and gasoline
D) CNG and diesel

Question 36

Technician A says that propane is roughly 30% less dense than gasoline. Technician B says that fuel consumption with propane is slightly higher than gasoline. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 37

What type of fuel is made of 85% methanol and 15% petroleum?

Question 38

What should you wear when disconnecting the service plug on the Prius?

Question 39

A customer states there is a smell of natural gas when starting and shutting off her CNG fueled car. Technician A says a slight natural gas odor is normal. Technician B says a odor of natural gas indicates a leak. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 40

What is the cleanest burning fuel used today?

Question 41

What are the advantages and disadvantages of a propane powered vehicle?

Question 42

What are the advantages and disadvantages of a FCEV vehicle?

Question 43

What are the advantages and disadvantages of an ELV vehicle?

Question 44

What is a primary concern when working on a CNG vehicle and who should work on them?

Question 45

Explain briefly the difference between how a flexible fuel vehicle works and one that runs only on gasoline.

Question 46

What are the advantages and disadvantages of a CNG powered vehicle?

Question 47

What are the advantages and disadvantages of an E85 flexible fuel vehicle?

Question 48

A scan tool may be needed to place the system in a special maintenance mode when servicing a hybrid electric vehicle.

Question 49

How does an Atkinson-cycle differ in operation than an Otto-cycle engine?

Question 50

What are the advantages and disadvantages of a HEV vehicle?

Question 51

Explain regenerative braking.

Question 52

Technician A says a Miller cycle engine is the same as an Atkinson cycle engine except for using a turbocharger. Technician B says Miller cycle engines use supercharges to increase power and performance. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 53

Explain how the Atkinson cycle engine works more efficiently.

Question 54

How is a hybrid electric vehicle powered and what are its advantages?