WebEngineering Electrical Engineering 30, 10 kVA, V, 4-pole, 50 Hz star connected synchronous achine has synchronous reactance of 16 2 and negligible sistance. The machine is operating as generator on 400 V us-bars (assumed infinite). 1. Determine the excitation emf (phase) and torque angle when the machine is delivering rated kVA at 0.8 pf lagging. WebThe inductive reactance XL of an inductance L at angular frequency w and frequency f is: XL = wL = 2pfL. For a sinusoidal current i of amplitude I and angular frequency w: i = I sinwt. …
AC Circuit Analysis: Fundamentals Course for Electrical Engineers
WebHowever, emulated reactance and resistance by SSSC – ES is likely to affect the performance of a distance protection system. This paper presents a detailed model of an SMIB system with SSSC – ES. Injected voltage by SSSC – ES in all the four quadrants of operation is presented. ... JF - International Journal of Electrical and Computer ... WebMay 16, 2016 · If the load is a pure reactance, the voltage across it is 90° out of phase with the current. However, if the wire is a pure resistance, then the voltage across it must be in-phase with the current. cynthia london scam
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WebQ4: A 50 Hz, 11KV, 3-ph, alternator with earthed neutral has a reactance of 5 Ω\ ph and is connected to bus bar through a C.B. The distributed capacitance up to C.B between phase and neutral is 0.01μF, determine: 1-the recovery voltage across the contacts of the breaker, 2-the frequency of oscillation, 3- The restriking voltage across the contacts of the breaker, … WebMar 28, 2024 · The first cycle, fully offset, sub transient reactance current may approach a peak of 2.8 times the RMS starting current. The starting current is related to the motor inductive reactance which in turn is related to the rotor frequency or slip frequency. For a fully offset condition, the peak will be 2 x 1.414 or 2.828. WebPercentage Resistance, Reactance & Impedance: Transformer Efficiency: Efficiency At Any Load: All Day Efficiency: Condition For Maximum Efficiency: Load Current For Maximum Efficiency: EMF Induced In Primary & Secondary Windings: Where E1 = EMF induced in primary winding E2 = EMF induced in Secondary winding N1 = Number of Turns in Primary … billy y tommy