Exam 19: Capacitive Circuits

In a series RC circuit, V_T is the phasor sum of the two voltages V_R and V_C 90° out of phase.

Instead of combining waveforms that are out of phase, they can be added more quickly by using their equivalent ______________.

With respect to a series current, both the applied voltage and capacitive voltage are 180° out of phase with capacitive current.

When calculating capacitive current, capacitive reactance applies

When a capacitor and a resistor are connected in series, the current is the same in both X_C and R.

When branch currents are out of phase are combined, they cannot be added without taking the phase ______________ into account.

In what circuit is i_c used as a reference and v_c is considered to lag by 90°?

A coupling capacitor is used to pass the desired ac signal variations while blocking the steady dc level of a fluctuating dc voltage.

Instead of combining waveforms that are out of phase, they can be added more quickly by using their equivalent phasors.

What value of capacitance can be used as a coupling capacitor for frequencies 50 Hz and up with a series resistance of 400 ??

A ______________ capacitor's low reactance allows developing all the ac signal voltage of the generator across R.

The Pythagorean theorem states that the hypotenuse is equal to sum of the squares of the sides.

In a series RC circuit, the phasor for X_C, IX_C, or V_C is at

For R in parallel with X_C, Z_EQ can be calculated

In order for a coupling capacitor to be effective, its reactance should be

When a capacitor and resistor are connected in series, the current is limited by

The resultant of the phasor addition of X_C and R is their total opposition in ohms called ______________.

When branch currents that are out of phase are combined

When voltages are out of phase with each other, arithmetic addition is not possible and ______________ (or algebraic) addition becomes necessary.

When analyzing an RC circuit, which of the following values of I and V can be used?