1. A If Vab= 400 V in a balanced Y-connected three-phase generator, find the phase voltages, assuming the phase sequence is: (a) abc(b) acb
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- Please answer quickly "In series-connected ac circuit, the total voltage across the circuit is always equal to the sum of the magnitude (only) of the individual voltage across each element." True False The power factor is equal to cosine of the phase difference. True False A leading power factor means that the circuit is predominantly capacitive in nature. True False "Since most loads are resistive in nature (e.g. motors), improvement of power factor is done by connecting capacitor banks or a synchronous condenser " True FalseCan you explain the given questions in an original way? Single Phase and Three Phase Principles • Single Phase Generators • Two Phase GeneratorsAsiacell|ASIACELL 3G 2G zain 1Q BartlebySolutions.. Q3: At the parallel operation of three-phase transformers: a) Give an explanation for the following cases: i. Two-lamps are glow-up i. Three-lamps are glow-up إضافة وصف. . .
- Q16 Complete the answer: Phase sequence in a balanced three phase system is RBY, if B reaches maximum at 210°, then Y reaches maximum at ................ degree.For the following network: a. Draw the per-phase equivalent circuit b. Find real, reactive, and apparent powers of the load c. Calculate the generator's power factora. Y-Connected b. В 100kW Source 0.9 LAG 80KVA 0.8 LAG Figure 1 80kW 0.85 LAG
- Problem 2B A star-connected three-phase load absorb 3000 W with power factor 0.433 lagging has a resistance series with an inductance in each branch. It is connected to the 400Vrms (line voltage), 4-wire, 50 Hz, 3-phase supply with the phase sequence is ABC and phase-A as reference has angle 10°.a. Sketch the circuit diagram of the system.b. Calculate the phase voltages of each loads. c. Calculate the phase currents that flow into each load.d. Draw for both of the phasor diagram of load currents and load voltages.1. An Alternator having three-phase, 3-wire ABC system supplying an effective line voltage of 120 V, has an a three-impedances of 50 / 45 ohms in Delta connection. Assume that Vbc is the reference vector. Determine a) line current and line voltages with its degrees, b)Draw the current -voltage phasor diagram c) and the power generated in the line quantities of the alternator. 2. In problem no. 1, assuming that it is Wye connected load and VAN is the reference vector. Determine the total true power, reactive power, apparent power of the connected load. What is the capacity in Kva of synchronous generator if the connected load is 85%.Knowing that the voltage Van at the terminals of a three-phase generator without load is 110<25° Vrms calculate the voltage a)Vbc b) Vcn c) Vac
- 012- A three phase transformer 3300/ 400 V has D/Y connect working on 50HZ. The line current on the primary side is 12A a. secondary has a balanced load at 0.8 lagging p.f. Determine the i) Secondary phase voltage ii) Line current iii) Output powerIn a balanced delta connected 3-phase circuit, has resistance 25 ohm and inductive reactance 40 ohm, connected to a 400V,50HZ 3-phase supply voltage, then total power delivered to load is Select one: a. 5397.76W b. 1635.34KW c. 7593.26W d. NONE OF THESEA Y-connected generator rated at 300MVA, 33kV, has a reactance of 1.24 p.u. Find the ohmic value of reactance. O 7.5102 ohms/phase O 3.5102 ohms/phase 4.5102 ohms/phase O 6.5102 ohms/phase