ENG3043 Tutorial I A DC voltage source (V=10 V) is connected to a load (Z= 100 2) via a lossless transmission line (TML) as shown below. The voltage source has an internal impedance Z-50 2 and the TML has a characteristic impedance Z- 75 2. i. Calculate the phase velocity of the TML if its effective permittivity c is 2.56; ii. Calculate the source and load refection coefficients; is the time taken traveling from one end of the TML to the other and z refers to any position on the TML iv. Draw the voltage waveform at z-31/4 from the source for the time period between 0 and 37; v. If the switch was open at =1.57, draw the voltage waveform at =12 from the source for the time period between 0 and 37

I turned the voltage value of the AC source into Vrms and got magnitude 16.97 & angle 10.Then calculated the impedance of Load A to be [ -9.28 - j23.4 ]. From that, I calculated the complex power of load B to be [ -2.42 + j6.33 ] my power factor calculation I am using inverse tan ( Q/P) , where Q i got -1.91 & P to be 5.559, which I got from my total complex power. If that helps. But I am calculating a negative power factor, so i am curious where I went wrong, Thank you!

The impedance of a transmission line with a length of 50 km is given as z = 0.08 + j0.48 22/km. At the end of the line, a power of 250 MW is drawn with a lagging power factor of cosy = 0.95 under 220 kV voltage. Under these conditions, find the voltage, current, and power factor at the beginning of the line.

Solve A-E