Q.5. Using the voltage divider rule or Kirchhoff's voltage law, determine the unknown voltages for the configurations given below: + V, + 20 V - + 10V 20 R 40 120 V s0 V R, (a) (b)

Differentiate Kirchhoff's voltage law from Kirchhoff's Current law.

Question 2 A voltage of 100VAC is shown on the oscilloscope. What is the peak to peak voltage? O 70.7V O 144V O 283V O 63.7V Question 3 What is the efficiency of the transformer? Is-10A Vp 120V >RL-120 O 1p-12.5A

KANA G1 500 MVA 13.8 KV x₂ = 0.2 Xo -0.1 Bara 1 SC AY 500 MVA 13.8 KV/ 500 KV x=0.12 -0 150 Bara 2 00 www 150 St G2 150 St Bara 4 Bara 3 750 MVA 500 kV/ 18 KV x=0.1 750 MVA 18 KV x"=0.18 X2 -0.18 Xo =0.09 DL 1000 MVA 500 kV/20 kV X=0.1 G3 1000 MVA 20 kV x"=0.17 X₂ -0.2 Xo =0.09 For the power system with a single line diagram; a) By choosing the base values of 1000 MVA and 20 kV in the Generator G3 region, the system is zero, Draw the reactance diagrams of the positive and negative sequence circuits. (for each line x0 = x1 = x2 = 50 ohm) b) Find the Thevenin equivalents according to the fault condition in busbar 1.