Find the power loss in a 1.00 - Ω transmission line.
The per-phase impedance of a short transmission line is (0.3+j0.4) Ω. The sending end line-to-line voltage is 3300V, and the load at the receiving end is 300 kiloWatts per phase at 0.8 power factor lagging. Calculate: (a) The receiving end voltage (b) The line current (c) The sending end power factor (d) The power loss.
An aluminum power transmission line has a resistance of 0.0580 Ω / km . a) What is its mass per kilometer? (b) What is the mass per kilometer of a copper line having the same resistance? c)A lower resistance would shorten the heating time. Discuss the practical limits to speeding the heating by lowering the resistance.
Given a 50 Ω lossless transmission line, find the length of the line so the input impedance at 3 GHz appears as a capacitor equal to 10 pF. Wave velocity on the line is 0.8c. (only one solution is necessary).
The local FM radio station broadcasts at 97.1 MHz. Suppose they use a 75-Ω transmission line to feed the broadcast antenna. If the antenna impedance is 50 Ω, (a) find the length and characteristic impedance for a quarter-wave transformer to match the antenna to the line. Assume the phase velocity is the speed of light. (b) What fraction of the power is delivered to the antenna with the original line relative to the power delivered to it with the matched...
A 75 Ω lossless transmission line is terminated into a load 100 +j150 Ω. For this line, find: i. Reflection coefficient; ii. An antenna receiving a signal of 500 MHz has the following specifications: input power Prad 3.25 kw; effective area of antenna Aeff 3.5 m2; total efficiency of antenna,-42%; radiation efficiency of antenna ecd-65%; tilt angle of the received signal ψ = 35°. Determine Voltage standing voltage ratio; b. i. Gain of the antenna (in dB) ii. Maximum radiation...
Consider a 50 Ω lossless transmission line terminated in a load impedance ?? = (100 − ?50) Ω. Find ?(?) and Γ(?) at a distance ? = 0.1λ.
USE QUARTER-WAVE METHOD 11.56 A 50 2 lossless transmission line that is 20 ml 120 + j220 Ω ossless transmission line that is 20 m long is terminated into a load. To perfectly match, what should be the length and location of a short-circuited stub line? Assume an operating frequency of 10 MHz. am 11.56 A 50 2 lossless transmission line that is 20 ml 120 + j220 Ω ossless transmission line that is 20 m long is terminated into...
A 60 Ω lossless transmission line is terminated by a 60 +
A lossless transmission line Z0 = 75 Ω is 10 cm long (f = 800 MHz, vp = 0.77c). If the input impedance is Zin = j60 Ω (a) Find ZL (using the Smith Chart) (b) What length of a short-circuit transmission line would be needed to replace ZL?
A three-phase transmission line is 200 km long. lt has a total series impedance of 25+j110)Ω Per Phase and a total shunt admittance ofj5x 10 Ω. It delivers 180 MW at 275 kV and 0.8 power factor lagging to a load connected at the receiving end. Using the medium π model of the line, determine the voltage, current, real power, reactive power and power factor at the sending end of the line.