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

Question 1

13)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

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

Answer 2

False

Question 3

17)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  ____________________.

Answer 3

set point

Question 4

11)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 5

16)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 6

7)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 7

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

Question 8

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

Question 9

12)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

Question 10

8)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 11

14)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 12

9)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 13

20)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.

Question 14

18)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 15

15)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 16

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

Question 17

5)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 18

10)____  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 19

6)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 20

3)Repeated fast charging of HV batteries increases battery life.

Question 21

25)How do fuel cells operate?

Question 22

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

Question 23

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

Question 24

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

Question 25

22)What are some drawbacks to electric vehicles?