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NCCER 201: ALTERNATING CURRENT QUESTIONS AND ANSWERS WITH SOLUTIONS 2024 $14.99   Add to cart

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NCCER 201: ALTERNATING CURRENT QUESTIONS AND ANSWERS WITH SOLUTIONS 2024

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NCCER 201: ALTERNATING CURRENT QUESTIONS AND ANSWERS WITH SOLUTIONS 2024

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  • August 26, 2024
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  • 2024/2025
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  • Questions & answers
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NCCER 201: ALTERNATING CURRENT
QUESTIONS AND ANSWERS WITH
SOLUTIONS 2024
A 20-microfarad capacitor is in parallel with a 10-microfarad capacitor. The total capacitance is _____.

10 microfarads

20 microfarads

30 microfarads

40 microfarads - ANSWER 30 Microfarads



Each of two equal capacitors in series has_____.

half the applied voltage

the original value of the applied voltage

twice the applied voltage

four times the applied voltage - ANSWER Half the applied voltage



The self-induced voltage across an inductance is produced by a change in current with respect to ____.

frequency

time

capacitance

input voltage - ANSWER Time



Transformer windings are typically wrapped around a(n) _____.

polyester core

insulated paper core

iron core

copper core - ANSWER Iron Core



What is the apparent power of an AC circuit with a source voltage of 240V and a total current of 15A?

, 1,200W

2,400W

3,600W

7,200W - ANSWER 3,600W



What is the step-down turns ratio of a transformer with 150 turns in the primary and 50 turns in the
secondary?

1:3

3:1

10:1

10:3 - ANSWER 3:1



The opposing force that an inductor presents to the flow of alternating current is called _____.

inductive resistance

inductive reactance

true resistance

inductive capacitance - ANSWER Inductive Reactance



The product of the source voltage and the total current is_____.

true power

apparent power

reactive power

the power factor - ANSWER Apparent Power



The power factor can be defined as the ratio of true power to _____.

reactive power

total resistance

total current

apparent power - ANSWER Apparent Power

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