P4-Given the line-to-line voltages Vab = 280<0°, V =250<-110°, Vca = 290< 130° volts, calculate the sequence components of the line-to-ground voltage, denoted Vigo, Vig₁, and V₁g2

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Q3(a) In an overhead line, there are THREE units in the string of insulators having phase voltage of 19.06kV. If the shunt capacitance between each insulator pin and earth is 0.22 times than insulator capacitance (i) Calculate the distribution of voltage over 3 insulators. (ii) Explain why string efficiency, will not reach to 100% under practical condition.

= Q3. (a) Two circuits have impedances Z₁ 1000237⁰ and Z₂ = 500253⁰ N. Showing all calculations, determine the total impedance, and the current drawn from a 230 V, 50 Hz supply, in a ±jb form, when these impedances are connected: (i) in series across the voltage terminals. (ii) in parallel across the voltage terminals.

A- A 3-ph, double circuit O.H.T.L, 320 kV, 340 km, 50 Hz has a configuration as shown in the figure below where each phase in the double circuit has a double bundle with a spacing of d cm between the two conductors in the bundle where d is the last two digits (from right) of your registration number (i.e for the student that has a registration mumber 202112396, d= 96). Each conductor in the bundle has a diameter of 0.135 ft and a geometric mean radius (Ds = 1.6 cm). Calculate: 1- Inductance per phase per km. 2- Total inductive reactance. 3- This T.L. is required to supply 240 MVA at 0.86 lag P.f. at 320 kV, assuming that this load is divided equally between these two circuits, find the voltage drop across this T.L (ignore capacitive effect in the calculation). 4- What may happen if we replace the location of a' and c' bundles. Discuss your answer. 5- Suggest a way to ređuce the value of the inductance. Verify your suggestion. -8 m 3m 3m 8 m 11 m

The currents drawn by the receivers in a given network are given in the figure. Accordingly, active taking into account the current distribution, the point where the greatest voltage drop occurs, and Determine the distribution of the balancing currents in the arms, taking into account their directions.

Ans:32.4 kV I have the solution but didnt understand.Kindly explain the solution.

A 500 MVA synchronous machine has H, = 5.6 MJ/MVA and a 1200 MVA machine has H₂ = 2.0 MJ/MVA. The two machines operate in parallel in a power station. What is the equivalent. H constant for the two, relative to a 100 MVA base?

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Solve it fast plz