Electrical Engineering - Circuit Theorems in AC Analysis - Discussion
Discussion Forum : Circuit Theorems in AC Analysis - General Questions (Q.No. 2)
2.
For the given circuit, find VTH for the circuit external to RL.
4.69
51.3° V
51.3° V4.6938.7° V
38.7° V46938.7° mV
38.7° mV60° V
0° VDiscussion:
11 comments Page 2 of 2.
Azeem said:
5 years ago
It is very simple.
1) As we know voltage across parallel is same so XL is useless to calculate;
2) To find vth RL is open circuit so remove RL.
3) Now we have VS= 6 V and Xc= 12 K is in series with R = 15 K.
4) Z = (R^2+Xc^2)^1/2 = 19.2 K.
5) Vth = R/Z * Vs = .78*6 = 4.69.
6) θ = tan-1 ( Xc/R) = .6747 rad * 57 = 38.5°.
1) As we know voltage across parallel is same so XL is useless to calculate;
2) To find vth RL is open circuit so remove RL.
3) Now we have VS= 6 V and Xc= 12 K is in series with R = 15 K.
4) Z = (R^2+Xc^2)^1/2 = 19.2 K.
5) Vth = R/Z * Vs = .78*6 = 4.69.
6) θ = tan-1 ( Xc/R) = .6747 rad * 57 = 38.5°.
(3)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers