AC Circuit Operations

Question 1

Total impedance in a series circuit is found by:

Answer 1

finding the net reactance and the net resistance, square each separately, add them together and then find the square root of the sum.

Question 2

In a series AC circuit with a resistor, inductor and capacitor, each with the same resistance or reactance, a voltmeter measuring each individual voltage drop would find:

Answer 2

the voltages equal to each other.

Question 3

Which of the following is not a characteristic of a series circuit?

Answer 3

There is a different level of current in the reactive components than in the resistive components.

Question 4

In an AC circuit, as the applied voltage frequency changes upward, the inductive reactance in the circuit will:

Answer 4

increase.

Question 5

In an AC circuit, as the applied voltage frequency increases the capacitive reactance in the circuit will:

Answer 5

decrease.

Question 6

A 50KHz AC voltage is applied to a 10mH inductor, its reactance at this frequency is:

Answer 6

3140 Ohms.

Question 7

1 uF capacitor in a circuit with a frequency of 100 KHz applied has a reactance of:

Answer 7

15.9 Ohms.

Question 8

In a series circuit when the inductive reactances equal the capacitor reactances the circuit has __________ impedance.

Answer 8

minimum

Question 9

In a parallel circuit when the inductive reactances equal the capacitor reactances the circuit has ___________ impedance.

Answer 9

maximum

Question 10

Resonance is when ___________.

Answer 10

the total of the inductive reactances in the circuit equal the total of all capacitive reactances