Level 2 Module 1 Alternating Currents Exam Questions And Answers All correct
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Course
NCCER
Institution
NCCER
Level 2 Module 1 Alternating Currents Exam Questions And Answers All correct
2:1 - ANS What is the step-down turns ratio of a transformer with 200 turns in the primary and 100 turns in the secondary?
induced high voltage - ANS Opening the secondary of a CT under load will cause a dangero...
2:1 - ANS What is the step-down turns ratio of a transformer with 200 turns in the primary and 100 turns
in the secondary?
induced high voltage - ANS Opening the secondary of a CT under load will cause a dangerous level
of___.
K
40Hz - ANS What is the hertz rating of an AC circuit if the frequency is 20 cycles per 1/2 second?
C
340V - ANS Given: A circuit has an rms voltage of 120VAC. What is the peak-to-peak voltage?
175V - ANS A circuit has a peak voltage of 275V. What is the average voltage value?
LO
one-third the applied voltage - ANS Each of three equal capacitors in series has___.
XL=2piefL - ANS The formula for inductive reactance is___.
YC
10A - ANS Given: An AC circuit containing resistance only. What is the current flow if the resistance is
15 ohms and the voltage is 150v?
Lags the voltage - ANS The current in inductive circuit___.
Rms values - ANS Unless otherwise noted, the calculations in AC circuits use___.
D
Increases - ANS When frequency decreases, capacitive reactance___.
U
It leads the voltage. - ANS Which of the following is true of the current in a capacitive circuit?
0.637 x peak value - ANS In sine wave terminology, the average value is___.
ST
All DC rules and laws apply, including Ohm's law - ANS In AC circuits containing only resistance,___.
Increases - ANS If the area of the plates of a capacitor is increased, the amount of capacitance___.
Current with respect to time - ANS The self-induced voltage across in inductance is equal to the change
in___.
45 - ANS Given: A 30-microfarad capacitor in parallel with a 15-microfarad capacitor. The total
capacitance is___.
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