A single phase has two group of conductors A & B; where A consists of 3- sub conductors (a, b, c) each of its have a radius of 0.25 cm, and the group B consists of two sub conductors (d, e) each of its have a radius of 0.5 cm. Calculate the inductance of the total system where the distance between the sub conductors is as below. 9m 6m 6m ୦୩ Group A Group B

The ACSR conductor Falcon is used in a 3-phase equidistant configuration with D = 42 feet. The per kilo feet inductive reactance will be: O A. 0.1537 B. 0.8117 O C. 0.1475 O D. 0.1148 O E. None of choices are correct

A single phase has two group A and B, 50 Hz, overhead line system has radius of conductor 0.5 cm. alculate the total inductance of the line. a2 a1 6 cm 2 m 3m b₂ m B b₁

A 33 kV, 50 Hz. 3-phase underground cable, 6 km long uses three single core cables. Each of the conductor has a diameter of 2.75 cm and the radial thickness of insulation is 0.4 cm. Determine (1) capacitance of the cable/phase (ii) charging current/phase (iii) total charging KVAR. The relative permittivity of insulation is 3.

Task 3 A three phase, four wire star connected load consisting of: ZR: a resistor of 9500 in series with a 3H inductor ZB: a resistor of 1950 ZY: a resistor of 1950 in series with a 4µF capacitor Using the equipment available in the power lab (Room T017), connect the given load to a three-phase supply available in the lab and: 3.1. Determine the current of each line and the neutral current and measure the total power supplied by the source. 3.2. Analytically, calculate all currents and the total power and compare with those obtained in measurements. 3.3. Device a method and measure the waveform of the neutral current. Discuss the obtained waveform and the reason for any distortion in the waveform 3.4. Validate your calculations using computer simulation

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3. Find the capacitance per unit length of the single-phase line shown below. Conductors a, b, c are of 0.2 cm radius, and conductors d and e are of 0.4 cm radius. Oa 4m Oe 6ide X Side Y

1- A single phase line has two parallel conductors 3m apart. The radius of each conductor is 1.2 cm. calculate the loop inductance per km of the line. 2- A single phase line has two parallel conductors 4m apart. The radius of each conductor is 2m. Calculate the capacitance per km of the line.

15) Kirchhoff's Voltage Law (KVL) states that                                                                A) the product of the phasor voltages around any closed path must equal zero. B) the sum of the phasor voltages around any closed path does not have to equal zero. C) the sum of the phasor voltages around any closed path must equal zero. D) the sum of the phasor voltages around a closed path cannot include "through the air."

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