Electrical Engineering - RLC Circuits and Resonance - Discussion

Discussion Forum : RLC Circuits and Resonance - General Questions (Q.No. 2)
2.
In a series RLC circuit that is operating above the resonant frequency, the current
lags the applied voltage
leads the applied voltage
is in phase with the applied voltage
is zero
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
12 comments Page 1 of 2.

Sandeep wasnik said:   9 years ago
At resonant condition.

XL = XC @ resonant frequency.

Resonant frequency more if XL>XC and less if XL<XC.

Here it is more and it means XL is high and hence L is high (XL = 360FL).

L always takes lags the current.

Hence the current lags the applied voltage.

Balamurugan C said:   1 decade ago
AT RESONANT CONDITION

XL=XC @ RESONANT FREQUENCY

RESONANT FREQUENCY MORE IF XL>XC AND LESS IF XL<XC

HERE IT IS MORE AND IT MEANS XL IS HIGH AND HENCE L IS HIGH (XL=360FL)

L ALWAYS TAKES LAGS THE CURRENT

HENCE THE CURRENT LAGS THE APPLIED VOLTAGE

Pruthviraj said:   7 years ago
Resonant frequency(fr) = 1/(2 * 3.14 * (LC)1/2,
Take that root.
Given that RLC circuit is above the fr then we know XL > XC in case fr is more then current must be low and that case current should be lags by applied voltage.

Jagadeesh said:   1 decade ago
according to the graph of resonance, above resonant frequency, inductive reactance is more than capacitive reactance, so net is inductive and thus the current lags applied voltage

Abhi said:   10 years ago
At frequencies above the resonance frequency the series RLC circuit. Behaves as an inductive load (evident from equivalent impedance equation) hence current will lag.

Manindra said:   10 years ago
At resonant frequency, (Xl=Xc).

Above resonant frequency, (Xl>Xc).

Below resonant frequency (Xl<Xc).

ARVIND said:   6 years ago
The reactive voltage VL and VC, does it cancel each other at resonance? Can anyone explain?

Varshney said:   9 years ago
Above resonance frequency current lags voltage because at this situation XL>XC.

Aggrey kere said:   10 years ago
At resonance, Xl =XC. Thus there no phase angle. Therefore; no lug or lead.

Sandeep sana said:   9 years ago
Resonant frequency XL>XC. So current lags the applied voltage.


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