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What is the total impedance of a series circuit that has 100 Ω resistance 500 Ω of inductive reactance and 300 Ω of capacitive reactance?
Wiki User
∙ 14y ago
It is 100+j(500-300) ohm = (100+j200) ohm = 223.6<630 ohm
Wiki User
∙ 14y ago
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What does capacitive reactance oppose?
Inductive reactance.
When a resistive AC circuit contains inductance the total opposition to current flow is called?
The resistance of an a.c. load is called 'resistance' (R). Resistance is not affected by frequency, only by the cross-sectional area, length, and resistivity of the conductor. Having said that, because of the skin effect, which causes an a.c. current to flow closer to the surface of the conductor, the effective cross-sectional are is reduced, so the value of a.c resistance is somewhat higher than the d.c. resistance -this difference increases with frequency.The opposition to a.c due to inductive or capacitive loads is called reactance (inductive reactance or capacitive reactance), and the overall opposition to a.c. current is the vector sum of resistance and reactance, and is called impedance. That is:(impedance)2 = (resistance)2 + (reactance)2
What the magnitude of the impedance of a series AC circuit w resistance of 6 Ω an inductive reactance of 17 Ω and zero capacitive reactance?
Since inductive reactance is 90° out of phase from pure resistance, this can be calculated like the hypotenuse of a right triangle. Sqrt( 172 + 62) = 18.028 Ω The angle is 70.6° lagging.
What is the impedance of a series R-L-C circuit?
the net oppostion offered by the rlc circuit for the ac current to pass through it is called the impedance of rlc circuitAnswerThe impedance of an RLC circuit is the vector sum of the circuit's resistance, inductive reactance, and capacitive reactance, expressed in ohms.
What load impedance Z will result in maximum power transfer from an electric source with an internal impedance of r?
For maximum power transfer, source resistance should match load resistance and source reactance should match load reactance with the opposite sign (so if the load is capacitive, the source should be inductive).
What are the three types of opposition to current flow that impedance represents?
There is pure resistance, inductive reactance, and capacitive reactance.
What is impedance diagram?
An impedance diagram (sometimes called an impedance triangle) results when a series circuit's voltage phasor diagram is divided throughout by its reference phase (current) -this results in resistance (=VR/I), inductive reactance (=VL/I), capacitive reactance (=VC/I) and impedance (=V/I) andillustrates the Pythagorean relationship between the circuit's impedance, reactance, and resistance.
What is the reason that capacitive reactance measured in ohms?
Because it is. Capacitive reactance is a form of resistance, along with inductive reactance. All are measured in ohms.
Why at resonance the voltage drop across inductance and the voltage drop across capacitance is greater than the source voltage?
This isn't necessarily the case. It depends upon the value of resistance (which, at resonance, determines the current), and the values of the inductive- and capacitive-reactance.At resonance, the impedance of the circuit is equal to its resistance. This is because the vector sum of resistance, inductive reactance, and capacitive reactance, is equal the the resistance. This happens because, at resonance, the inductive- and capacitive-reactance are equal but opposite. Although they still actually exist, individually.If the resistance is low in comparison to the inductive and capacitive reactance, then the large current will cause a large voltage drop across the inductive reactance and a large voltage drop across the capacitive reactance. Because these two voltage drops are equal, but act the opposite sense to each other, the net reactive voltage drop is zero.So, at (series) resonance:a. the circuit's impedance is its resistance (Z = R)b. the current is maximumc. the voltage drop across the resistive component is equal to the supply voltaged. the voltage drop across the inductive-reactance component is the product of the supply current and the inductive reactancee. the voltage drop across the capacitive-reactance component is the product of the supply current and the capacitive reactancef. the voltage drop across both inductive- and capacitive-reactance is zero.
Under what conditions could the total impedance of two impedances in series be less than that of either one by itself?
If both were reactances instead of resistances.AnswerIf one impedance was resistive-inductive (R-L) and the other impedance was resistive-capacitive (R-C), then the effective impedance could be less than either. For example, towards or at resonance, the inductive reactance will negate the capacitive reactance, leaving resistance as the main (or only) opposition to current flow. At resonance, the impedance of a circuit is simply its resistance.
Short definition of impedance in connection with ac?
Impedance in an AC circuit is like resistance. In fact, impedance is measured in ohms, just like resistance. Impedance takes into account the fact that current and voltage are often not in phase with each other due to capacitive and inductive reactance.
What is difference in resistance and reactance?
Resistance is a concept used for DC. the current through a resistance is in phase with the applied voltage Reactance is used for AC the current through a inductive reactance lags the applied voltage by 90 degrees. the current through capacitive reactance leads the applied voltage by 90 degrees. the net reactance is the difference between inductive and capacitive reactance
What does capacitive reactance oppose?
Inductive reactance.
What is the unit of inductive reactance?
Inductive reactance, as well as capacitive reactance, is measured in ohms.
When a resistive AC circuit contains inductance the total opposition to current flow is called?
The resistance of an a.c. load is called 'resistance' (R). Resistance is not affected by frequency, only by the cross-sectional area, length, and resistivity of the conductor. Having said that, because of the skin effect, which causes an a.c. current to flow closer to the surface of the conductor, the effective cross-sectional are is reduced, so the value of a.c resistance is somewhat higher than the d.c. resistance -this difference increases with frequency.The opposition to a.c due to inductive or capacitive loads is called reactance (inductive reactance or capacitive reactance), and the overall opposition to a.c. current is the vector sum of resistance and reactance, and is called impedance. That is:(impedance)2 = (resistance)2 + (reactance)2
What is current voltage power and resistance?
current - movement of electrical chargesvoltage - electrical force/pressurepower - work doneresistance - opposition to currentinductive reactance - opposition to changes in currentcapacitive reactance - opposition to changes in voltagetotal impedance - vector sum of resistance, inductive reactance, and capacitive reactanceetc.
What the magnitude of the impedance of a series AC circuit w resistance of 6 Ω an inductive reactance of 17 Ω and zero capacitive reactance?
Since inductive reactance is 90° out of phase from pure resistance, this can be calculated like the hypotenuse of a right triangle. Sqrt( 172 + 62) = 18.028 Ω The angle is 70.6° lagging.
