Exam 15: Rc Circuits

-If a capacitor generates heat, it is probably defective.

-See Figure 15-6. Which equation describes the total impedance ZT?

-The phase angle between the source voltage and the current in Figure 15-5 is:

The time required for a phasor to go through 2n radians is the of the sine wave.

-The total current and phase angle in the circuit in Figure 15-3 expressed in polar form is:

Which one of the following rectangular values is equivalent to the polar form 20 255°?

What is the total current in a parallel circuit consisting of a 1.27 µF capacitor, and a 50 Ω resistor, with a 2.5 kHz, 10 Vac power supply?

-What is the phase angle of the impedance in the circuit in Figure 15-4?

The current always leads the voltage in a series resistor capacitor circuit by 45°.

-The true power delivered to the load in Figure is the power that does the work.

The term impedance, applied to a circuit containing capacitance and resistance, is the phasor result of the resistance and capacitive reactance.

Convert the following complex number from polar form to rectangular form: 40 V 2120°

Subtract the following complex numbers: 20 2-30° - 10 230°

-The total circuit impedance in Figure is:

Add the following complex numbers: 40 + j10 and 25 - j7

-The Apparent power in the entire circuit in Figure 15-4 is:

In a series capacitive circuit, the smallest capacitor has the largest voltage drop.

Which of the following is the reference vector for parallel RC circuits?

The current leads the voltage in a series resistor capacitor circuit.

Convert the following complex number from rectangular form to polar form: 40 + j30V