RLC Circuits Questions

The reference quantity in a parallel circuit phasor diagram is _____.

A)Voltage

The current in any capacitor ____ the capacitors voltage by ____

B) leads, 90

The phase angle between EA and IT in all circuits is represented by the symbol ____

C) Theta

The current in any inductor ____ the inductors voltage by ____.

D) Lags, 90

The reference quantity in a series circuit phasor diagram is ____

E) Current

The total current in an RC parallel circuit ____ the applied voltage by ____.

A) Leads, Theta

The total current in an RL parallel circuit ____ the applied voltage by ____.

B) Lags, Theta

The applied voltage in an RC series circuit ____ the current by ___

C) Lags, Theta

The applied voltage in an RL series circuit ____ the current by ____

D) Leads, Theta

Total opposition to current flow in an AC circuit

Impedance

Power required by a circuit due to inductive and capacitive circuit components causing voltage and current to be out of phase

Reactive power

A circuit built to eliminate or reduce unwanted variation in current or voltage

Filter

Amount of power that appears to be consumed by a circuits

Apparent power

Ratio between the true power and the apparent power of a circuit; the cosine of the phase angle

Power factor

Power dissipated in a circuit

True power

The state or condition where capacitive reactance and inductive reactance are equal

Resonance

Angle formed by the hypotenuse and the adjacent side

Phase angle

Frequency at which a circuits capacitive reactance equals its inductive reactance

Resonant frequency

Opposition to the flow of current of capacitors and inductors; measure in units of ohms.

Reactance

An LC circuit that can be adjusted to achieve resonance at a desired specific frequency.

Tuned circuit

A phasor pointing at 90 ___ the reference quantity by ___

lags, 90

A phasor pointing at -90 ___ the reference quantity by ____

Leads, 90