- #1
dcrisci
- 45
- 0
Okay so I have been working on a problem for practice for an exam and this one question is really pissing me off. I can't find what I am doing wrong and I've redone it about five times.
The question is asking for the admittance of the circuit and the answer is given as 2.29 S at an angle of -42.2 degrees (don't know how to make the phasor symbol)
Picture of the circuit
Picture of my solution
I realize my answer is not the same but I have no clue where I am going wrong with this. I began from the right side of the circuit doing the following:
1. Calculate the impedance of the inductor and resistor in series
2. Calculate the admittance of part 1 and the second inductor since they are in parallel
3. Convert part 2 into impedance
4. Calculate impedance of part 3 added with the capacitor and resistor
5. Calculate the admittance of part 4 added with the parallel resistor
6. Convert part 5 to impedance, add this impedance with the final inductor
7. Convert back to admittance to find out the answer is wrong
The question is asking for the admittance of the circuit and the answer is given as 2.29 S at an angle of -42.2 degrees (don't know how to make the phasor symbol)
Picture of the circuit
Picture of my solution
I realize my answer is not the same but I have no clue where I am going wrong with this. I began from the right side of the circuit doing the following:
1. Calculate the impedance of the inductor and resistor in series
2. Calculate the admittance of part 1 and the second inductor since they are in parallel
3. Convert part 2 into impedance
4. Calculate impedance of part 3 added with the capacitor and resistor
5. Calculate the admittance of part 4 added with the parallel resistor
6. Convert part 5 to impedance, add this impedance with the final inductor
7. Convert back to admittance to find out the answer is wrong