AC Theory Level 4 Complete Exam Study Questions with 100% Correct Answers Already Graded A+

AC Theory Level 4 Complete Exam Study
Questions with 100% Correct Answers
Already Graded A+

1. Resonance is defined as that frequency where inductive reactance is equal to
capacitive reactance.
Select one:
True
False - ANSWER True


2. The reference for analyzing any parallel circuit is the ? .
a.current
b.reactance
c.resistance
d.voltage - ANSWER d.voltage


3. Given a theoretical parallel circuit containing no resistance with XL = XC =
25 ohms and with 50 volts AC applied: What is the value of the circulating
current? Icirc=Ea/Xc - ANSWER 2A


4. If the value of C is increased when the parallel RLC circuit is tuned, the
resonant frequency would be ? .


5. Note: In practice, there is always resistance in a circuit.
a.higher
b.lower - ANSWER b.lower

, 6. At resonance, the value of Z of the Parallel RLC circuit cannot be
determined if line current is not known.


7. Note: In practice, there is always resistance in a circuit.
Select one:
True
False - ANSWER False
Z can be calculated using the following formula:
Z = Q × XL


8. Note: In practice, there is always resistance in a circuit.
a.capacitive
b.inductive - ANSWER b.inductive


9. At resonance, the impedance of the series circuit is at a ? .


a.maximum
b.minimum - ANSWER b.minimum


10.At resonance, the impedance of the parallel circuit is at a ? .


a.maximum
b.minimum - ANSWER a.maximum


At resonance, current in the series circuit is at a ? .