Calculate the mesh current I1, I2 and I3 of the circuit shown below
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- 1) The AC bridge shown below in the figure has an Z₁ = 1009 + j2009, Z₂ = 600N - j300N, Z3 = 50092 and Z4= unknown. Determine the value of unknown in CD arm and specified its elements. B Z₁ Z₂ A Z3 D Z₁A 500 MVA synchronous machine has H, = 5.6 MJ/MVA and a 1200 MVA machine has H₂ = 2.0 MJ/MVA. The two machines operate in parallel in a power station. What is the equivalent. H constant for the two, relative to a 100 MVA base?Source Transformation method I=? V50ohm=? P50ohm=?
- Solve for B to E: Answers: a. 2247.8405 Ab. 292.0629 kVc. 2291.3829 Ad. 667.10875 MW, 53.2164 MVAR (cap), 669.228 MVAe. 32.89125 MWReconsider Problem 3.29. If Va,VbandVc are a negative-sequence set, how would the voltage and current relationships change? (a) If C1 is the complex positive-sequence voltage gain in Problem 3.29 and (b) if C2 is the negative sequence complex voltage gain, express the relationship between C1andC2An ac resistance is higher than a dc resistance. True False
- In Fixed-bias configuration, the DC voltage across the Source terminal is equal to ____. a.Vgs b.0V c.Vp d.VdsIf T = 0.6Z – 60° and A = 48cm find the position of the first voltage minimum on the line. Select one: O a. The first voltage minimum is at 2cm from the load. O b. The first voltage minimum is at 72cm from the load. O c. The first voltage minimum is at 8cm from the load. O d. The first voltage minimum is at –4cm from the load. O e. The first voltage minimum is at 20cm from the load. O f. The first voltage minimum is at 32cm from the load. O g. The first voltage minimum is at 44cm from the load. O h. The first voltage minimum is at 24cm from the load.A 400 MVA synchronous machine has H, = 4.6 MJ/MVA and a 1200 MVA machine has H₂=3.0 MJ/MVA. The two machines operate in parallel in a power plant. Find out H relative to a 100 MVA base.
- التاریخ | موضوع الدرس Vincoms) -220v AL=10k C = 100 ME e The FwRcct. %3D Find: 1. Dcvaltage and Current AS/p=1/5 ii the ripple Ualtage Tit ripple factorChoose the supply voltage for a step down chopper circuit which drives the resistive load 4.80 with average load current 32.4A for a duty cycle of 0.4. O a. 2624.400 O b. 777.600 O c. 48.000 O d. 388.800A parallel connection of a RL branch with a C branch is connected across a 100V AC mains. At first R = 10 ohms, L = 20mH and frequency of 1000rad / s, the current measured is 2.2361A at 89.44 leading power factor. A) Determine the initial capacitance. B) However, a fault occurs on the capacitor branch making its capacitance 20% lower and a resistance of 5 ohms is detected. If this faulty circuit is rerun but at a frequency of 500 rad / s, determine the new current that will flow through the circuit.