Electrical Engineering - Circuit Theorems in AC Analysis - Discussion
Discussion Forum : Circuit Theorems in AC Analysis - General Questions (Q.No. 14)
14.
Referring to the given circuit, find ZTH for the part of the circuit that is external to RL.
129
21.4° 
21.4° 43.768.6°
68.6° 43.721.4°
21.4° 12.968.6°
68.6° Discussion:
4 comments Page 1 of 1.
Pavan said:
1 decade ago
Here, R1 and XL are in parallel. So, the Equivalent resistance is calculated based on the formula (R1*XL) / (R1+XL).
= (120*47j) / (120+47j) = 43.7 < 68.6 ohms.
= (120*47j) / (120+47j) = 43.7 < 68.6 ohms.
Roshan rathore said:
1 decade ago
Here, R1 and XL are in parallel. So, the Equivalent resistance is calculated based on the formula (R1*XL)/(R1+XL).
= (120*47j)/(120+47j) = 43.7 < 68.6 ohms.
= (120*47j)/(120+47j) = 43.7 < 68.6 ohms.
Stutikushwaha said:
9 years ago
But here when frequency is given zero them it means supply is DC and now L behave like short circuit and Zth will be 0. Am I write?
Muhammad Rehan Arshad said:
4 years ago
To find the Rth voltage source will be short. So no impact of frequency during the calculation of Zth.
(1)
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