AC THEORY LVL III, LESSON 3 EXAM
QUESTIONS WITH VERIFIED ANSWERS 2026 –
2027 .
A ? test instrument is a device that is installed in a process or at a bench to continually measure and
display quantities. - Correct Answer -permanent
AC voltage is voltage in a circuit that has current that flows in one direction only. true or false -
Correct Answer -false
AC voltage is voltage in a circuit that reverses its direction of flow at regular intervals and is stated
and measured as a peak, average, or ? value - Correct Answer -RMS
The ? value of a sine wave is the maximum instantaneous value of either the positive or negative
values in the sine wave. - Correct Answer -peak
The average value of an AC sine wave is the mathematical mean of all instantaneous voltage values
in half the sine wave and is equal to ? of the peak value. - Correct Answer -0.637
A ? is a test instrument with a bulb that is connected to two leads to give a visual indication when
voltage is present in a circuit. - Correct Answer -test light
A(n) ? of a voltage indicator is its inability to indicate the voltage amount. - Correct Answer -
disadvantage
Which of the following is an advantage of voltage indicators? - Correct Answer -voltage inductors do
not have to come in contact with any conductors to indicate voltage
A ? is an electrical test instrument that indicates the approximate voltage amount and type of
voltage (AC or DC) in a circuit by the movement of a pointer and, in some models, vibration. -
Correct Answer -voltage tester
1
QUESTIONS WITH VERIFIED ANSWERS 2026 –
2027 .
A ? test instrument is a device that is installed in a process or at a bench to continually measure and
display quantities. - Correct Answer -permanent
AC voltage is voltage in a circuit that has current that flows in one direction only. true or false -
Correct Answer -false
AC voltage is voltage in a circuit that reverses its direction of flow at regular intervals and is stated
and measured as a peak, average, or ? value - Correct Answer -RMS
The ? value of a sine wave is the maximum instantaneous value of either the positive or negative
values in the sine wave. - Correct Answer -peak
The average value of an AC sine wave is the mathematical mean of all instantaneous voltage values
in half the sine wave and is equal to ? of the peak value. - Correct Answer -0.637
A ? is a test instrument with a bulb that is connected to two leads to give a visual indication when
voltage is present in a circuit. - Correct Answer -test light
A(n) ? of a voltage indicator is its inability to indicate the voltage amount. - Correct Answer -
disadvantage
Which of the following is an advantage of voltage indicators? - Correct Answer -voltage inductors do
not have to come in contact with any conductors to indicate voltage
A ? is an electrical test instrument that indicates the approximate voltage amount and type of
voltage (AC or DC) in a circuit by the movement of a pointer and, in some models, vibration. -
Correct Answer -voltage tester
1
