Electrical Engineering - Circuit Theorems in AC Analysis - Discussion

Discussion :: Circuit Theorems in AC Analysis - General Questions (Q.No.5)

5. 

Referring to the given circuit, what is ZTH if R1 is changed to 220 ?

[A]. 22512.1°
[B]. 22577.9°
[C]. 4677.9°
[D]. 4612.1°

Answer: Option C

Explanation:

No answer description available for this question.

Anonymous said: (Jan 4, 2012)  
Hi,

Since the source has 0Hz then it acts as a DC voltage source. Shouldn't the inductor act as a short circuit?

Khyati said: (Sep 2, 2014)  
Here parallel combination of R1 = 220 and XL will give the answer.

Keith said: (Mar 18, 2015)  
Where did you get 220?

Sujitha said: (Jun 11, 2016)  
Can any explain this question in detail?

Mathew said: (May 27, 2017)  
But w.r.t AB, XL and R1 should be in series.

So the answer should be A.

Saran said: (Aug 28, 2017)  
Please, Somebody can explain this?

Thiru said: (Sep 18, 2017)  
Give an explanation for this.

Shree said: (Sep 4, 2018)  
Here to find Zth vs short-circuit and RL open circuit. R1 parallel with Xl.

Zth= 220*47i/220+47i.
=45.96∠77.94.

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