Chapter 2

Question 1

Technician A says that an ac electric motor converts electrical
energy into mechanical torque. Technician B says that when
mechanical torque is applied to an ac motor, it can output
electrical energy. Who is correct?
a-Technician A only
b-Technician B only
c-Both A and B
d-Neither A nor B

Answer 1

C. Both A and B

Question 2

What is currently the common method of cooling a traction motor
in most EV drive trains?
a-Natural convection
b-Forced-air cooling circuit
c-Forced-liquid cooling circuit
d-EV electric motors do not have to be cooled

Answer 2

C. Forced-liquid cooling circuit

Question 3

What is the advantage of using multi-phase over single-phase ac
traction motors in EVs?
a-More efficient operation
b-Lower operating temperatures
c-Alternating current frequency ripples can be smoothed out
d-All are correct

Answer 3

D. All are correct

Question 4

Technician A says that EV traction motors typically have higher
power ratings than the ICEs used in an equivalent vehicle.
Technician B says that the peak torque ratings for EV traction
motors tend to be lower than those used in an equivalent ICE by
a significant margin. Who is correct?
a-Technician A only
b-Technician B only
c-Both A and B
d-Neither A nor B

Answer 4

A. Technician A only

Question 5

What is used to quantify electromotive force (EMF)?
a-Amps
b-Volts
c-Ohms
d-Watts

Answer 5

B. Volts

Question 6

________ fires can usually be safely extinguished with water.
A. Class A
B. Class B
C. Class C
D. Class D

Question 7

When attempting to supress a Class C fire in a chassis, you should________
A. Disconnect battery power
B. use a carbon dioxide fire extinguisher
C. avoid inhaling the fumes produced by burning conduit
D. All are correct

Question 8

What must appear on the container of any potentially hazerdous matter used in the workplace?
A. Skull and crossbones emoji
B. Phone number of the nearest hospital
C. SDS label
D. OSHA web address

Question 9

Which of the federal body administrates Right to Know Legislation?
A. OSHA
B. WHIMS
C. DOT
D. DOJ

Question 10

Which of the following identifies footware that has been certified for working in high-voltage, EV circuits?
A. Green UL triangle
B. White square with orange omega symbol
C. A steel toe
D. Green CSA triangle

Question 11

Which of the following is recomended when using a fixed-stationary rotary grinding wheel?
A. Vinyl gloves
B. Rubber gloves
C. Leather gloves
D. No gloves