Find the line voltage Vab of Vbn=265.6 angle 37° and the sequence is BCA.
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Find the line voltage Vab of Vbn=265.6 angle 37° and the sequence is BCA.
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- 3-phase line has conductors 4 cm in diameter spaced equilaterally 2 m apart. If the dielectric strength of air is 29 kV (max) per cm, find the disruptive critical voltage for the line. Take air density factor =0.952 and irregularity factor mo = 0.9.the air-filled two-wire line has a characteristic impedance of 50 Ω and is operated at f = 3GHz .the load is ZL= 100 +j40Ω . for the line above, calculation ZL on the chart the line impedance 2.5 cm from the load , the admittance, the VSWR on the line, and distance from the load to the first voltage minimum and maximum.A 3-phase line has conductors 2 cm in diameter spaced equilaterally 1 m apart. If the dielectric strength of air is 30 kV (max) per cm, find the disruptive critical voltage for the line. Take air density factor δ = 0.952 and irregularity factor m = 0.9.
- Note that the given 25 kV L-L voltage appears across the loads (right side of ZL) as denoted by Vab, Vbc, and Vca. Since there is no given voltage angle, you may assign angle zero to one of the line-to-neutral voltages. 1. Without the capacitors, what is the magnitude of the current passing through the line impedance ZL?Suppose a completely transposed 60-Hz three-phase line has flat horizontal phase spacing with 10 m between adjacent conductors. The conductors are 1,590,000 cmil ACSR with 54/3 stranding. Line length is 200 km. Assume the line voltage is 345 kV, at 60 Hz. i) Calculate the inductance in H/m. ii) The inductive reactance in ohm/m.A rectangular surge of 500 kV 3µs travels along the terminated line by an inductance of2mH. If the line is having a surge impedance of 600 Ω, the voltage across the inductanceis equal to
- Question # 02: What do you understand by impedance matching? Also write the formula of characteristic impedance for a loss less line? A piece of parallel wire line has a nominal capacitance of 30.5 F/m, and 8 H inductance per meter. Assume the radius of the conductor is 0.007 meter then find the distance between the two parallel wire lines in milimeterThe char. impedance of the trans. line is 50-Ohm and the resistance of it is 0.1Ohm/meter. What will be the value of the attenuation constant when the line is distortion less?A shielded, twin-wire line has a dielectric of relative permittivity 2 and acharacteristic impedance of 50 ohms. Calculate the phase velocity forsignal propagation along the line, and hence L and C.
- A matched source provides -6dbm to transmission line at 200MHZ frequency, the line is RG-58A/U JAN c-17A coax and ZL=30+j25 ohms, the loss through the cable is 10db. z0= 73 ohms , vp= 66% a) determine the length of the line in meters b) determine phase constant in degrees/metrethe three conductors of a three-phase line are arranged at the corners of a triangle of sides 1.5 m, 2 m, and 2 m. calculate the inductance perm of the line when the conductors are regularly transposed. the radius of each conductor is 0.4 cm.Calculate the per phase inductance and reactance of a balanced 3, 60 Hz, line with horizontal phase spacing of 10 m using three conductor bundling with a spacing between conductors in the bundle of 0.3 m. Assume the line is uniformly transposed and the conductors have a 1cm radius.