Exam 10: Rccircuits

-Calculate the apparent power in Figure 10 -1.

-Calculate the total impedance in Figure 10 -2.

Power factor values close to 0 denotes an RC circuit with mostly true power.

-If the operating frequency increases in Figure 10 -1, how does the resistor value change?

-If the source voltage is changed to 100 V in Figure 10 -1, find the true power.

If there is 10 VRMS across the resistor and 10 VRMS across the capacitor in a series RC circuit, then the source voltage equals _.

-What is the cutoff frequency in Figure 10 -3?

Which of these troubleshooting procedures should be performed first?

-If the operating frequency increases in Figure 10 -1, how does the current change?

In a series RC circuit, as the phase angle between the applied voltage and the total current increases, this is the same as:

An RC lag network is similar to a:

In an RC filter circuit, the cutoff frequency is defined as the frequency at which:

The phase angle of an RC circuit varies inversely with frequency.

-If the resistor changes to 2.2 kΩ in Figure 10 -1, how does the total current change?

-If the circuit in Figure 10 -3 has an output voltage that's too high at the cutoff frequency, .

In an RC circuit, the capacitive reactance is:

When an AC voltage is supplied to an RC circuit, the AC's current and amplitude will be:

As the frequency applied to an RC circuit is decreased, the phase angle decreases.

The phasor combination of VR and VC in an RC series circuit equals the source voltage.

A high pass filter will cause some phase shifting of the signal.