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What is a reactive circuit?

Anonymous

∙ 13y ago

Updated: 6/14/2023

A circuit that has only a capacitor in it. Or the net reactance is below zero, making it capacitive. The current leads the voltage in a negative (capacitive) reactive circuit.

Heather Tremblay ∙

Lvl 13

∙ 1y ago

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Related Questions

What is a capacitive reactive circuit?

A circuit that has only a capacitor in it. Or the net reactance is below zero, making it capacitive. The current leads the voltage in a negative (capacitive) reactive circuit.

What happens to reactive power in a circuit that has both inductance and capacitance?

Inductors are considered to be a load for reactive power, meaning that they will draw reactive power from the system. Capacitors are considered to be sourced of reactive power, they feed reactive power into the system. If you have a circuit that is at unity (balanced with inductors and capacitors) no reactive power will be drawn from the source. You will have unity power factor. If your circuit is more inductive than capacitive it will be drawing reactive power from the source. The opposite is also true for capacitors.

In the circuit shown if the value of the reactive component was increased?

if the value of the reactive component was increased, how would it change the waveforms?

What is the role of reactive power in an electric circuit?

Some electrical machines work on the principle of electromagnetic induction. For such events to occur, we need inductor due to which reactive power flows in the circuit. Since, this power is due to the energy storing elements in the circuit like inductor and capacitor. That is why, we need reactive power in a electric circuit.

What is reactive volt amps?

volt ampere reactive is the unit of reactive power.It is the power which does no useful work but is required to assist in performing work,such as setting up magnetic fields in motors and transformers.It is also called as imaginary power.It occurs in purely reactive circuit i.e. purely inductive or capacitive.The inductance absorbs the reactive power and capacitance injects the reactive power.In inductance,reactive power is utilised to develop the flux while in the capacitance,the reactive power's function is to store the charge.

What is a condition for resonance for an electrica circuit with reactive element?

For resonance to occur in an electrical circuit with a reactive element, the reactive element's reactance needs to be equal and opposite to the circuit's impedance. This occurs when the capacitive and inductive reactances cancel out, resulting in a net impedance that is purely resistive. At this point, maximum current flows through the circuit, enhancing certain frequencies.

What are the three case in which vswr is infinity?

open circuit load2. short circuit load 3. a purely reactive load.

What does 20VA mean?

20VA stands for 20 volt-amperes, which is a unit used to measure apparent power in an electrical circuit. It is calculated by multiplying the voltage by the current in an AC circuit. It represents the total power in the circuit, including both real power (watts) and reactive power (volt-amps reactive).

Why does a series resonant circuit cannot be tank circuit?

A series resonant circuit has it's reactive components connected in series with each other; while the reactive components, as in a "tank" circuit, are connected in parallel with each other. The resonant series circuit has the capability of producing usable increased voltage levels across each component at resonance, while the resonant tank circuit does not. The resonant parallel, or "tank" circuit; has the dual capability of creating a situation whereby the input amperage level is reduced to minimum while, at the same time, a maximum amount of circulating amperage is created between the two reactive tank components at resonance.

The of a circuit tends to slow down the movement of electrons?

The "impedance" of a circuit slows down the movement of electrons. This can be resistive, reactive or a combination of both.

What is the var meter?

A VAR Meter is used to measure Reactive Power in AC Circuits - Pure reactive components dissipate zero power, which makes sense in a DC circuit, as a capacitor passes no DC current and an inductor displaces no voltage. Yet, in an AC circuit, the reactive components "seem" to dissipate power, as current passes through the capacitor and the inductor sees a voltage drop. This counterfeit power is called "reactive power" and is measured not in Watts, but in VARs (Volt-Amps-Reactive). Its mathematical formula symbol is "Q". A VAR Meter is used to measure Reactive Power in AC Circuits - Pure reactive components dissipate zero power, which makes sense in a DC circuit, as a capacitor passes no DC current and an inductor displaces no voltage. Yet, in an AC circuit, the reactive components "seem" to dissipate power, as current passes through the capacitor and the inductor sees a voltage drop. This counterfeit power is called "reactive power" and is measured not in Watts, but in VARs (Volt-Amps-Reactive). Its mathematical formula symbol is "Q".

What terminology describes the effect of a reactive load in a circuit and the change of the voltage-current timing relationship?

The terminology that describes the effect of a reactive load in a circuit is "phase shift." In circuits with reactive components like inductors and capacitors, the voltage and current do not peak at the same time; instead, they are out of phase. This results in a timing relationship where the current either leads or lags the voltage, depending on whether the load is inductive or capacitive, respectively. This phase difference can affect the overall power factor of the circuit.

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