Deck 7: Series Circuits: Resistance, Inductive Reactance, and Capacitive Reactance

Question 1

What is the formula that defines the power factor curve?

Answer 1

The formula that defines the power factor curve is PF = R/Z.

Question 2

The circuit power factor and the____________________ are determined by the resistance and the capacitive reactance that is not canceled by the inductive reactance.

Answer 2

phase angle

Question 3

The magnitude of V_L - V_C is found by means of the vector multiplication rule of placing vectors head to tail.

Answer 3

False

Question 4

Impedance is the result of the combination of resistance and inductance.

Question 5

Inductance and capacitance have opposite effects in an ac circuit.

Question 6

How is the voltage drop across the resistor determined?

Question 7

Describe a resonant circuit.

Question 8

In the formula, V_L=IX_L, the variable V_L represents the ____________________.

Question 9

How is the net reactance, in ohms, found for an RLC series circuit?

Question 10

Explain how to determine whether the power factor of a circuit is leading or lagging.

Question 11

The voltage component across the inductor (V_L) is rotated counterclockwise so that it leads the current (I) by 90°.

Question 12

The inductive reactance is greater than the capacitive reactance, the series circuit has a(n) ____________________ power factor.

Question 13

The vector sum of the voltage across the resistor and the voltage across the net inductive reactance is equal to the ____________________.

Question 14

At frequencies below resonance, the equation PF = R/Z shows the power factor to be inversely proportional to impedance.

Question 15

____________________ is the result of the combination of resistance and reactance.