2. Find the transfer function. Y(s) of Figure 2 U(s)
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- SHOW COMPLETE SOLUTIONNNNA generator rated at 30MVA, 11kV has a reactance of 40%. Calculate its p.u. reactances for a base of 50MVA and 10kV. O 0.606 p.u. O 0.506 p.u. O 0.806 p.u. O 0.706 p.u.Figure 2 shows three "LC" circuits, two of them with capacitance capacitors "C" and the three with inductance coils "L", the three circuits are coupled by means of two capacitance capacitors "Cc". The currents that circulate through each mesh are those indicated in the figure: "I1", "I2" and "I3". Using Kirchhoff's law for voltages and taking into account the definition of current I = −dQ / dt, find the system of coupled equations of the system and then find the normal angular frequencies of the system.
- 1. What impedance vector 0 – j22 represents:A. A pure resistance.B. A pure inductance.C. A pure capacitance.D. An inductance combined with a resistance.Let's say you measure t1/2 to be 0.037 seconds and the resistance in the circuit is 68 Ohms. Then what is the capacitance in micro Farads? Answer in micro Farads.2_53528980697... -> For the circuit shown below, detemine the voltage of the -j10 2 capacitive reactance. -j5 0 ILOA(T) ==j102 jlon is Q 102 O 0.5L-90 52 A.
- Questions 16 to 20 (Write True or False) A16 A larger inductor produces a smaller rate of change of current. A17 KVL states that E IR + E EMF = 0 for any open circuits. A18 For a sine waveform, the value of form factor is 1.414. A19 In a purely inductive circuit, the current lags the voltage by II/4 rads. In an ideal transformer, the rate of change of flux is the same for both primary A20 and secondary.1.1 Given the circuit in Figure 1, using Kirchoffs voliage law show that: jwME, Ez R1 + jwl1 R, R Figure 1 1.2 A ferromagnetic ring of cross-sectional area 800 mm and of mean radius 170 mm has two windings connected in series, one of 500 turns and one of 700 turns. If the relative permeability is 1200, calcula:e the self-inductance of each coil and the mutual inductance of each assuming that there is no flux leakage.A triac can pass a portion of …………… half-cycle through the load a. neither positive nor negative b. both positive and negative c. only negative d. only positive
- Solve thisthe topic is about : DELTA – WYE AND WYE –DELTA TRANSFORMATIONWhat do you understand by Ferranti effect? Subject Power Transmission and Distribution2. Refer to the Figure 2. a) Determine the total impedance of the circuit in polar form. b) Determine the voltage v(t) and current i(t) sinusoidal forms. Sketch one cycle of the waveforms in the same x-axis. Clearly indicating the peak value and the period of each waveform and the phase difference (in milliseconds) between the two waveforms. c) Determine the values of resistance R and inductance L. d) Determine the phasors V,, VR and Vc. e) Sketch the phasor diagram showing Vs, Vr, Vr, Vc and I.
