Exam (elaborations)
CWEA E/I LEVEL 3 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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CWEA E/I LEVEL 3 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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CWEA E/I LEVEL 3 QUESTIONS ANDANSWERS WITH SOLUTIONS 2024
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 - ANSWER D-not heat up
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 - ANSWER A-Class I
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 - ANSWER C-instrument transformer
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 - ANSWER D-The operator must restart the meter
manually
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 - ANSWER D-Current carrying ability
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 - ANSWER A-rarely needed
The advantage of LCDs over LEDs is:
A-accuracy
B-better visibility
C-lower power consumption
D-sensitivity - ANSWER C-lower power consumption
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. - ANSWER d. stray magnetic fields.
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. - ANSWER d. in series with the load.
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