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NCCER 26201-20 ALTERNATING CURRENT EXAM QUESTIONS AND ANSWERS $10.49   Add to cart

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NCCER 26201-20 ALTERNATING CURRENT EXAM QUESTIONS AND ANSWERS

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NCCER 26201-20 ALTERNATING CURRENT EXAM QUESTIONS AND ANSWERS An electric current always produces ? - ANS A magnetic field The number of cycles an alternating electric current undergoes per second is known as ? - ANS Frequency What is the peak voltage in a circuit with an RMS voltage o...

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  • August 27, 2024
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  • 2024/2025
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  • NCCER
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NCCER 26201-20 ALTERNATING
CURRENT

An electric current always produces ? - ANS A magnetic field

The number of cycles an alternating electric current undergoes per second is known as ? - ANS




K
Frequency

What is the peak voltage in a circuit with an RMS voltage of 120 VAC ? - ANS 170 VAC




C
Which of the following conditions exist in a circuit of pure resistance ? - ANS The voltage and current
are in phase


24A
LO
In a purely resistive AC circuit where 240v is applied across a 10 ohm resistor, the amperage is ? - ANS


When the current increases in an AC circuit, what role does inductance play ? - ANS It reduces the
YC
current

Which of the following coils is likely to show the lowest inductance? - ANS A coil with a narrow coil

Which of the following conditions exists in a circuit of pure inductance? - ANS The voltage and current
D

are 90 degrees out of phase

Reactance increases with an increase in? - ANS Inductance
U


Capacitance is measured in ? - ANS Farads
ST




The total capacitance of two 15uf capacitors connected in parallel is? - ANS 30uf

The total capacitance of two 15uf capacitors connected in series is? - ANS 15uf

The total capacitance of two 5uf capacitors and on 10uf capacitor in parallel is? - ANS 20uf

The opposition to current flow offered by the capacitance of a circuit is known as ? - ANS Capacitive
resistance

The total opposition to current flow in an AC circuit is known as ? - ANS Impedance

The true power in a circuit with 4A through a 50ohm resistor is ? - ANS 200w

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