NCCER: MODULE 26201-11 BASIC AC
CIRCUITS REVIW QUESTIONS AND
ANSWERS WITH SOLUTIONS 2024
An electric current always produces? - ANSWER a magnetic field
The number of cycles an alternating electric current undergoes per one-half second, the hurtz rating of
the circuit is? - ANSWER 30HZ
The period of a waveform is the ? - ANSWER inverse of the frequency
Which of the following conditions exist in a circuit of pure resistance? - ANSWER The voltage and current
are in phase.
Which of the following will cause the inductance of a coil to decrease? - ANSWER decreasing coil
diameter
Reactance increases with an increase in inductance - ANSWER TRUE
Capacitance is measured in - ANSWER farads
the opposition to current flow offered by the capacitance of the circuit is known as - ANSWER capacitive
reactance
Current leads voltage by 90 degrees in a - ANSWER capacitive circuit
Which of the following conditions exist in a circuit of pure inductance - ANSWER the voltage and current
are 90 degrees out of phase
The total opposition to current flow in an AC circuit is know as - ANSWER Impedance
, The formula, square root of r squared + X squared is used to solve for the - ANSWER total impedance of
an AC circuit
A power factor is not angular measure, but a numerical ration with a value between 0 and 1, equal to the
- ANSWER cosine of the phase angle
When the current increase in an AC circuit, what role does inductance play? - ANSWER It reduces the
current
The two winding of a conventional transformer are know as the - ANSWER primary and secondary
windings
All of the following factors increase the inductance of a coil, except a - ANSWER longer coil
The range of frequencies between the half power points of a circuit is know as the - ANSWER bandwidth
Which of the following best describes true power? - ANSWER The power consumed by the resistive
components of a circuit
Inrush current is a factor in the selecting transformers for ___ circuits. - ANSWER inductive
In a circuit containing resistance only, the voltage and current are _______ with one another. - ANSWER
in phase
the number of cycles that an alternating electric current, sound wave, or vibrating object under goes per
second is its - ANSWER frequency
the power consumed by _______ is called true power. - ANSWER resistance
the highest value of a sinusoidal varying voltage or current is its - ANSWER Peak wave
CIRCUITS REVIW QUESTIONS AND
ANSWERS WITH SOLUTIONS 2024
An electric current always produces? - ANSWER a magnetic field
The number of cycles an alternating electric current undergoes per one-half second, the hurtz rating of
the circuit is? - ANSWER 30HZ
The period of a waveform is the ? - ANSWER inverse of the frequency
Which of the following conditions exist in a circuit of pure resistance? - ANSWER The voltage and current
are in phase.
Which of the following will cause the inductance of a coil to decrease? - ANSWER decreasing coil
diameter
Reactance increases with an increase in inductance - ANSWER TRUE
Capacitance is measured in - ANSWER farads
the opposition to current flow offered by the capacitance of the circuit is known as - ANSWER capacitive
reactance
Current leads voltage by 90 degrees in a - ANSWER capacitive circuit
Which of the following conditions exist in a circuit of pure inductance - ANSWER the voltage and current
are 90 degrees out of phase
The total opposition to current flow in an AC circuit is know as - ANSWER Impedance
, The formula, square root of r squared + X squared is used to solve for the - ANSWER total impedance of
an AC circuit
A power factor is not angular measure, but a numerical ration with a value between 0 and 1, equal to the
- ANSWER cosine of the phase angle
When the current increase in an AC circuit, what role does inductance play? - ANSWER It reduces the
current
The two winding of a conventional transformer are know as the - ANSWER primary and secondary
windings
All of the following factors increase the inductance of a coil, except a - ANSWER longer coil
The range of frequencies between the half power points of a circuit is know as the - ANSWER bandwidth
Which of the following best describes true power? - ANSWER The power consumed by the resistive
components of a circuit
Inrush current is a factor in the selecting transformers for ___ circuits. - ANSWER inductive
In a circuit containing resistance only, the voltage and current are _______ with one another. - ANSWER
in phase
the number of cycles that an alternating electric current, sound wave, or vibrating object under goes per
second is its - ANSWER frequency
the power consumed by _______ is called true power. - ANSWER resistance
the highest value of a sinusoidal varying voltage or current is its - ANSWER Peak wave
