Unit 22 quiz

Power factor (PF) is the ratio of the _____ power to the _____ power.

Apparent; true

In a series RC circuit, apparent power can be calculated by _____.

Et x 1

In a capacitive circuit, the voltage leads the current by 90 electric degrees.​

False

You connect a clamp-on ammeter and a voltmeter to a series RC circuit powered by a 60-Hz circuit. The voltage reads 240 V and the current is 0.715 A. The resistor is 150 Ω. What is the true power?

153.36 W

A series RC circuit contains two resistors and two capacitors. The resistors are 120 Ω and 470 Ω. The capacitors have capacitive reactances of 600 Ωand 300 Ω. When calculating the circuit values, what is the total capacitive reactance?

900 ohms

A series RC circuit contains two resistors and two capacitors. The resistors are 39 Ω and 56 Ω. The capacitors have capacitive reactances of 80 Ω and 40 Ω. When calculating the circuit values, what is the total resistance?

95 ohms

In a series RC circuit, total impedance is a combination of resistance and capacitive reactance.

True

Of the different power values in an RC circuit, which is known as apparent power?

VA

Dividing a circuit's total applied voltage by the total impedance results in the total _____.

current

The _____ of a circuit is the cosine of the phase angle.

power factor