. For the circuit of Fig. 19.51: a. Find the total number of watts, volt-amperes reactive, and volt-amperes, and F. b. Find the current I.. c. Find the type of elements and their impedance in each box. (Assume that the elements within each box are in series.)
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- a) What is the use of Schering bridge in measurement system? b) Draw the schematic diagram of Anderson's bridge. c) Write down the balanced equations for Maxwell's bridge.2) 400 km, 138 kV, 50 Hz transmission line has the following parameters: r=0.106Ω/km,x=0.493Ω/km, y=j3.36 x 10-6 S/km. Losses are neglected.(a) Compute the corresponding ABCD parameters (use T equivalent circuit and derive the relatedequations).a plant is feeding a load 1.2k feet away. the load demands 100 amps at 500V. an ac system with transformer rated 500/5000V near the generating station and 5000/500V near the load. if the line has resistance of 0.2 ohms and receiving voltage of 500V, find the sending end voltage and powerflows and transmission losses.
- Company Y would like to have a new installation transmission line to open a small new city consist of 300 MW with 0.85 power factor lagging at full load. The new transmission line required 132 kV with 124.274 miles long. All the elements needed for the new transmission line is listed in table shown in the picture. You are required to model the transmission line and analysed the performance of the new transmission lines in terms of voltage regulation and efficiency. Note that the frequency used is 50 Hz.adv payment @idckath A load of 12 MVA, 0.8 pf lagging, 22 kV is served by a transmission line which has a line resistance of 3 ohms and a line reactance of 10 ohms. Solve for the sending end voltage.Assuning an autotransformer with a 70 percent tap and a supply voltage(vg) of 200 V,find the following parameters when a 3.6 kW load is connected across the secondary:
- QUESTION 2 Transform the Y networks of Fig. 2a into ∆ networks. (Hint: Draw visual aid.)Given that the SAIFI of a distribution system is 0.33 and the SAIDI is 35.7 (in minutes), compute for the CAIDI.True or False 1) Connecting a capacitor bank in parallel to an inductive load leads to a reduction in the total current consumed. 2) Voltage levels of 33kV, 11kV and 0.4kV are in operation within Iraqi transmission system. 3) The two-port ABCD parameters for a short transmission line are (A= D= 1 per unit, B=Z Ω and C=0). 4) The efficiency of a transmission line is defined as the ratio of received to sent apparat powers. 5) In a series dc motor, the armature current, the field current, and the line current are all the same. 6) The PID attempts to maximize the error by adjusting the process through use of a manipulated variable. 7) In the shunt connected DC motor, the equation that calculate electromagnetic torque is ??= ??????a
- 29. In Fig. 19.103 three non-reactive resistors, R1= 10ohm, R2= 20ohm and R3 = 30ohm are connected in star to a symmetrical 3-phase supply of line voltage 400 V and phase sequence RYB. The wattmeter W is connected as shown, with the current coil in the R line and the voltage circuit connected between lines R and Y. Calculate the currents in the three lines and the reading of the wattmeter. [15.9, 13.1 A, 9.8A, 5.82 kW] AnswerThe networks A and B in the circuit are reciprocal and symmetric. For network A, it is known that a′11=2 and a′12=1 Ω. Find the a parameters of network B.Transmission and Distribution of Electric Power Answer the Following Question Please: Q) Three-phase transmission line, 60HZ, have: (50 MW, 0.866 lagging p.f. and 132 kv in receiving end. If the line have (Z = 100 <80 Ohm / phase and Y = 0.0012 <90 S). Calculate: Vs, Is, Vreg, and power factor in sending end. Also, find the transmission efficiency? For the following transmission models: 1- Short transmission line model. 2- Medium transmission line (pi) model. 3- Medium transmission line (T) model. 4- Long transmission line model. (Please show your answer steps)