Table of Contents
What is power consumed in a purely inductive or purely capacitive circuit?
Thus, the pure inductive circuit consumes zero active power and it consumes reactive power only from the supply source. In a pure capacitive circuit the current leads the voltage by 90° because the capacitive load always opposes the rate of change of voltage. The Power factor of a pure capacitive load is zero(leading).
Why the power consumed by purely capacitive connected to an AC source is?
AC Power Waveforms for a Pure Capacitor In the positive half of the voltage waveform between the angle of 0o and 90o, both the current and voltage waveforms are positive in value resulting in positive power being consumed. Between 90o and 180o, the capacitor current is negative and the supply voltage is still positive.
How do you know if a circuit is inductive or capacitive or purely resistive?
If both inductors and capacitors are present then simply find the equivalent impedance of the load network. If the imaginary part of the equivalent impedance is positive then the load is inductive, if it is negative then it is capacitive, and if it is zero then it is resistive.
How much power is consumed in a purely inductive?
zero
In this type of circuit, the current lags the voltage by an angle of 90 degrees. The Circuit containing pure inductance is shown below. Hence, the average power consumed in a purely inductive circuit is zero.
What is the real power consumed by a capacitive load?
The current consumed by a capacitive load always leads behind the voltage applied across the load. 4. A pure capacitive load causes the power factor zero leading but as there is no pure capacitive load so a capacitive load causes the power factor leading.
What is the power consumed in a purely capacitive AC circuit with no ohmic resistance?
Why Power in Pure Capacitive Circuit is Zero (0)? This shows the same as like pure inductive circuit i.e. in case of pure capacitive circuit, the total power of the circuit would be zero as Cos 90° = 0.
What is a purely inductive circuit?
A Pure inductive circuit is one in which the only quantity in the circuit is inductance (L), with no other components such as resistance or capacitance. The current in this type of circuit lags behind the voltage by 90 degrees.
What are examples of resistive loads?
Resistive Load Two common examples of resistive loads are incandescent lamps and electric heaters. Resistive loads consume electrical power in such a manner that the current wave remains in phase with the voltage wave. That means, power factor for a resistive load is unity.
What is a purely capacitive circuit?
Purely Capacitive Circuit When an alternating voltage is applied to a purely capacitive circuit, the capacitor is charged first in one direction and then in the opposite direction.
What is the role of capacitance in a circuit?
Capacitance is used to control PF, it is used as condenser, it is used in filters, inverters, ac and dc circuits etc. To make a circuit purely capacitive in nature, resistance is needed for charging and discharging of the capacitor, hence resistance element came into role in each and every electrical circuit.
What is the effect of a capacitor?
The effect of a capacitor is the capacitance, the amount of electric charge that is in the capacitor. The capacitor disconnects current in direct current (DC) circuits and short circuits in alternating current (AC) circuits.
Is it possible to have a Pure inductive circuit?
A pure inductance is practically not attainable, though it is nearly approached by a coil wound with such thick wire that its resistance is negligible. Whenever an alternating voltage is applied to a purely inductive circuit a back EMF is produced due to self-inductance of the coil.