Deck 82: New Vehicle Technologies: Battery Electric, Fuel Cell Electric, and Hydraulic Hybrid

Question 1

All of the following are components in a layout of a typical fuel cell vehicle EXCEPT:

A)ultra capacitor
B)fuel cell stack
C)gas tank
D)hydrogen tanks

Answer 1

C

Question 2

The two main parts of an electric motor are the stator and the rotor. The ____________________ in an HEV or EV motor is made up of groups of steel lamination stacks.

Answer 2

stator

Question 3

While having a discussion, Technician A says that AC induction motors (ACIM) are the most common motors used in industry. Technician B says that they are not especially suited for higher-power full-electric vehicles. Who is correct?

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

Answer 3

A

Question 4

All of the following statements about fuel cell electric vehicles (FCEV) are true EXCEPT:

A)An FCEV does not store electricity but generates it when needed to power the electric motor.
B)FCEVs are technically not hybrid vehicles.
C)The only exhaust by-products are water and heat.
D)An FCEV has a battery module that provides backup or supplemental power, like an electric supercharger..

Question 5

____ motors are used in most hybrid vehicles.

A)AC synchronous reluctance
B)DC brushless
C)Brushless permanent magnet (PM)
D)Three-phase AC induction

Question 6

An EREV is a plug-in hybrid vehicle that runs solely on battery power until the battery becomes discharged to a specified low-level state of charge (SOC), called the ____________________.

Question 7

All of the following statements are true about plug-in hybrid electric vehicles (PHEVs) EXCEPT:

A)A PHEV does not have a power socket and cannot be recharged by an external electrical source.
B)A plug-in hybrid can run for longer distances in full-electric mode than a conventional hybrid.
C)A PHEV runs for several miles on battery power before the engine turns on and begins to use fuel.
D)On longer trips, a PHEV is like a normal hybrid, using the ICE to provide propulsion.

Question 8

Both AC and DC motors can be ____________________ and are so called because the rotor and the rotating stator magnetic field turn at the same speed.

Question 9

The practical distance a pure EV can travel from its point of origin and still be able to return is called its ____.

A)circuit
B)leash
C)area
D)series

Question 10

Repeated fast charging of HV batteries increases battery life.

Question 11

All of the following statements about hydraulic hybrid vehicles are true EXCEPT:

A)Hydraulic hybrid systems store high-pressure fluid in accumulators at pressures above 3,000 psi.
B)Stored pressure provides power to one or more pump motors that provide power to the wheels.
C)Regenerative braking is less efficient with hydraulic hybrids than with electric hybrids.
D)During regenerative braking, the pump motors reverse, recharging the accumulator with pressure that can be used again for forward motion.

Question 12

The term xEV refers to any form of electric vehicle, including battery electric and fuel cell electric vehicles. These are also known as ____________________ because they produce no regulated exhaust emissions from the tailpipe.

Question 13

The rotating pulsed magnetic fields surrounding the stator turn faster than the rotor. The difference between the two speeds is called ____________________.

Question 14

The battery section of a hybrid vehicle is not only physically larger but has higher capacity than an electric car battery pack.

Question 15

While discussing EV batteries, Technician A says that in hybrid vehicles, the cells in the battery packs are all connected in series. Technician B says that in plug-in hybrids and pure electric vehicles, some are connected in parallel and some are in series.

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

Question 16

All of the following statements about DC brushless (DCBL) motors are true EXCEPT:

A)A typical DCBL motor is 85-90 percent efficient, and higher efficiencies have been produced.
B)As a DCBL rotor turns, its permanent magnetic fields interact with the stator's electromagnetic fields.
C)Magnetic attraction pulls the rotor along in its continuing rotation, causing torque output.
D)Maximum torque production of a DCBL motor occurs immediately, from when it starts until about 3,000 rpm.

Question 17

If an AC motor was synchronous, its rotor would not be able to start rotating in the first place.

Question 18

A DC brushless motor is actually an AC brushless motor that has an integral inverter and electronic controls, a rectifier, and a position sensor.

Question 19

Which of the following driving mode selections is LEAST-Likely to be used on Extended Range Electric Vehicles (EREVs)?

A)Economy Mode
B)Sport Mode
C)Mountain Mode
D)Cold Weather Mode

Question 20

A BEV can be plugged into almost any 120VAC household electrical outlet, or even 240VAC.

Question 21

What are some drawbacks to electric vehicles?

Question 22

How do fuel cells operate?

Question 23

Comparing motors, note the advantages of both DC and AC motors.

Question 24

List four advantages of lithium-ion compared to nickel-based batteries.

Question 25

What is the difference between a battery electric vehicle and a hybrid electric vehicle?