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CWEA E/I Level 3 Test Questions & 100% Correct Answers

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CWEA E/I Level 3 Test Questions & 100% Correct Answers

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  • September 7, 2024
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  • Exam (elaborations)
  • Questions & answers
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CWEA E/I Level 3 Test Questions &
100% Correct Answers

All the following are true of 240-volt systems compared to 480-volt systems, except:

a. they cost more to operate.

b. they require more current per unit

of power.

c. they require smaller circuit breakers.

d. they are safer. - ✔✔c. they require smaller circuit breakers.



If a charged capacitor is removed from a circuit, the capacitor:

a. retains its charge.

b. loses some of its charge.

c. loses most of its charge.

d. loses all of its charge. - ✔✔a. retains its charge.



Control systems are usually designed so that each individual circuit controls:

a. all functions of the machine.

b. at least two functions.

c. only one function.

, d. only one device. - ✔✔c. only one function.



A 115-volt, 2-KVA, single-phase generator operating at full load will deliver how many amperes?
a. 0.23

b. 17.4
c. 57.5

d. 230 - ✔✔b. 17.4



What is the current when a circuit has a 1,500- watt load and a power factor of 86%, and operates from

a three-phase 230-volt source?
a. 9.7 amps

b. 6.5 amps
c. 4.4 amps

d. 3.8 amps - ✔✔c. 4.4 amps



What is the amp-load of a three-phase, 0.5-hp, 230-volt motor with an efficiency rating of 92% and a

power factor of 80%?

a. 1.27 amps

b. 1.19 amps

c. 2.55 amps

c. 4.41 amps - ✔✔a. 1.27 amps



A three-phase, 460-volt motor draws a current of 52 amperes. The motor has an efficiency rating of

94% and a power factor of 80%. What is the horsepower? a. 24.1 hp


b. 41.7 hp

c. 50.0 hp

d. 73.8 hp - ✔✔b. 41.7 hp

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