CWEA E/I Level 3 Exam with Accurate
Solutions
D-not heat up - ANS-If the potential difference across the coil is low, the coil will:
A-draw too much current
B-become too hot
C-Produce too much magnetic force
D-not heat up
A-Class I - ANS-The NEC identifies environments that contain flammable vapors and
gases as which class of hazardous location?
A-Class I
B-Class II
C-Class III
D-Class IV
C-instrument transformer - ANS-Which of the following reduces high voltages and
currents to save values for measurements?
A-auto transformer
B-megohmmeter
C-instrument transformer
D-variable transformer
D-The operator must restart the meter manually - ANS-In a three wire control circuit,
when a power failure occurs:
A-The interlock contact will close the circuit
B-The operator can restart the meter automatically
C-The motor can restart unexpectedly
D-The operator must restart the meter manually
D-Current carrying ability - ANS-Push buttons are classified as standard duty or heavy
duty according to the:
A-Kind of enclosure
B-Service conditions
C-frequency operation
D-Current carrying ability
A-rarely needed - ANS-He push to test pilot light is used in applications where the pilot
light is:
A-rarely needed
B-A neon bulb
, C-used in DC applications
D-in constant use
C-lower power consumption - ANS-The advantage of LCDs over LEDs is:
A-accuracy
B-better visibility
C-lower power consumption
D-sensitivity
d. stray magnetic fields. - ANS-Shielding protects an analog meter from:
a. damage due to careless handling.
b. harmful UV rays.
c. over-current and surges.
d. stray magnetic fields.
d. in series with the load. - ANS-An ammeter should be connected:
a. across the line.
b. around an inductor.
c. in parallel with the load.
d. in series with the load.
b. microprocessor circuitry. - ANS-Bar graphs and wave forms can be displayed on a
LCD screen when the multimeter has:
a. analog/digital circuits.
b. microprocessor circuitry.
c. opposing coils and a commutator.
d. parallel ports.
b. how the conductors are connected. - ANS-The difference between the squirrel-cage
rotor and the wound rotor is in:
a. their pole-phase groups.
b. how the conductors are connected.
c. how the current is induced in the conductors.
d. all of the above.
b. stator. - ANS-The frame, the core, the winding, and the end plates are all parts of the:
a. rotor.
b. stator.
c. alternator.
d. induction motor
c. Discoloration. - ANS-Which of the following is a sign of overheating rotor bars?
a. Reduced starting torque.
b. Noise.
c. Discoloration.
d. All of the above.
Solutions
D-not heat up - ANS-If the potential difference across the coil is low, the coil will:
A-draw too much current
B-become too hot
C-Produce too much magnetic force
D-not heat up
A-Class I - ANS-The NEC identifies environments that contain flammable vapors and
gases as which class of hazardous location?
A-Class I
B-Class II
C-Class III
D-Class IV
C-instrument transformer - ANS-Which of the following reduces high voltages and
currents to save values for measurements?
A-auto transformer
B-megohmmeter
C-instrument transformer
D-variable transformer
D-The operator must restart the meter manually - ANS-In a three wire control circuit,
when a power failure occurs:
A-The interlock contact will close the circuit
B-The operator can restart the meter automatically
C-The motor can restart unexpectedly
D-The operator must restart the meter manually
D-Current carrying ability - ANS-Push buttons are classified as standard duty or heavy
duty according to the:
A-Kind of enclosure
B-Service conditions
C-frequency operation
D-Current carrying ability
A-rarely needed - ANS-He push to test pilot light is used in applications where the pilot
light is:
A-rarely needed
B-A neon bulb
, C-used in DC applications
D-in constant use
C-lower power consumption - ANS-The advantage of LCDs over LEDs is:
A-accuracy
B-better visibility
C-lower power consumption
D-sensitivity
d. stray magnetic fields. - ANS-Shielding protects an analog meter from:
a. damage due to careless handling.
b. harmful UV rays.
c. over-current and surges.
d. stray magnetic fields.
d. in series with the load. - ANS-An ammeter should be connected:
a. across the line.
b. around an inductor.
c. in parallel with the load.
d. in series with the load.
b. microprocessor circuitry. - ANS-Bar graphs and wave forms can be displayed on a
LCD screen when the multimeter has:
a. analog/digital circuits.
b. microprocessor circuitry.
c. opposing coils and a commutator.
d. parallel ports.
b. how the conductors are connected. - ANS-The difference between the squirrel-cage
rotor and the wound rotor is in:
a. their pole-phase groups.
b. how the conductors are connected.
c. how the current is induced in the conductors.
d. all of the above.
b. stator. - ANS-The frame, the core, the winding, and the end plates are all parts of the:
a. rotor.
b. stator.
c. alternator.
d. induction motor
c. Discoloration. - ANS-Which of the following is a sign of overheating rotor bars?
a. Reduced starting torque.
b. Noise.
c. Discoloration.
d. All of the above.
