Level 2 Module 1 Alternating Currents
verified correctly answered rated A+ latest
update 2025
The self-induced voltage across in inductance is equal to the change in___. --
- correct answer ---Current with respect to time
Given: A 30-microfarad capacitor in parallel with a 15-microfarad capacitor.
The total capacitance is___. --- correct answer ---45
Which of the following opposes any change in circuit current? --- correct
answer ---Inductance
"ELI the ICE MAN" is used to remember___. --- correct answer ---Phase
relationships that exist between voltage and current in an inductive circuit
According to the power triangle, the apparent power is___. --- correct
answer ---Greater than the true power
Which of the following uses electromagnetic induction to transfer electrical
energy from one circuit to another? --- correct answer ---Transformer
, Given: A transformer has 200 turns in the primary, 100 turns in the
secondary, and 150V AC applied to the primary. What is the voltage across
the secondary? --- correct answer ---75V AC
Transformers in which the primary and secondary voltages are 180 out of
phase are known as___. --- correct answer ---Unlike-wound transformers
Maximum voltage is generated by rotating wire when the conductor is
moving___. --- correct answer ---Across the field at 90°
If the time for one cycle is 0.1 second, the frequency is___. --- correct
answer ---10 Hz
If the phase angles of two sine waves are both 0 degrees then the waves___.
--- correct answer ---Are in phase
What is the step-down turns ratio of a transformer with 200 turns in the
primary and 100 turns in the secondary? --- correct answer ---2:1
Opening the secondary of a CT under load will cause a dangerous level
of___. --- correct answer ---induced high voltage
What is the hertz rating of an AC circuit if the frequency is 20 cycles per 1/2
second? --- correct answer ---40Hz
verified correctly answered rated A+ latest
update 2025
The self-induced voltage across in inductance is equal to the change in___. --
- correct answer ---Current with respect to time
Given: A 30-microfarad capacitor in parallel with a 15-microfarad capacitor.
The total capacitance is___. --- correct answer ---45
Which of the following opposes any change in circuit current? --- correct
answer ---Inductance
"ELI the ICE MAN" is used to remember___. --- correct answer ---Phase
relationships that exist between voltage and current in an inductive circuit
According to the power triangle, the apparent power is___. --- correct
answer ---Greater than the true power
Which of the following uses electromagnetic induction to transfer electrical
energy from one circuit to another? --- correct answer ---Transformer
, Given: A transformer has 200 turns in the primary, 100 turns in the
secondary, and 150V AC applied to the primary. What is the voltage across
the secondary? --- correct answer ---75V AC
Transformers in which the primary and secondary voltages are 180 out of
phase are known as___. --- correct answer ---Unlike-wound transformers
Maximum voltage is generated by rotating wire when the conductor is
moving___. --- correct answer ---Across the field at 90°
If the time for one cycle is 0.1 second, the frequency is___. --- correct
answer ---10 Hz
If the phase angles of two sine waves are both 0 degrees then the waves___.
--- correct answer ---Are in phase
What is the step-down turns ratio of a transformer with 200 turns in the
primary and 100 turns in the secondary? --- correct answer ---2:1
Opening the secondary of a CT under load will cause a dangerous level
of___. --- correct answer ---induced high voltage
What is the hertz rating of an AC circuit if the frequency is 20 cycles per 1/2
second? --- correct answer ---40Hz
