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hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?
While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?
there are cam operated switches - why we call cam operated , What is cam ?
pls tell me about ups internal connection & we have given only 3 phase supply to ups system how get 4 wire (R Y B N )
please send me previous year questions of jspl through which i could prepare myself for the test.
What is the previous name of Cox's Bazar
write a c++ code that receives an integer number and display the sum of the number and its revers integer?
what are the maximum available current, voltage ratings and switching speeds of the power electronic devices thyristor, power mosfet, igbt, and mct?
Is it advantages of having star-delta vfd than normal star vfd , if yes why?
delta motor winding resistance I take normally single winding is 2.5, which value is came delta connection ie RY ?
1- XC and the RC time constant are both measures of the reaction of C to a change in ____? 2-The power factor is a numerical ratio with a value between 0 and 1 equal to the ______________ of the phase angle. 3-When V and I are out of phase because of reactance, the product of V times I is called ______________ power 4-For _____________ inductors, the branch currents can be added algebraically. 5- The ______________ power in watts can be calculated as I^2R 6-Calculate XL with L = 30mH and f = 1kHz ( I have Xl=2piFL 2*3.141592653*1kHz*30mH =188 ohms Please check) 7-A parallel RL circuit has the values, R = 5kohms, XL = 5kohms. A voltage source of Vt = 10Vrms is connected in parallel to R and L. Determine the total current, It delivered by the voltage source Vt. 8-A series RC circuit has R = 1Mohm and C = 1microF. How long would it take for the capacitor to fully discharge if it is initially fully charged? 9-A circuit has real power = 300W and an apparent power of 500VA. Determine the power factor and phase angle. 10-The time constant for an LR series circuit is T = 0.1s and R = 10ohms. Calculate the inductance L.
What is the angle of inclination for the oil connection from transformer conservator to Bucholz relay and why?
i have attended the interview on 4th June,08 at Kolkata in IOCL, can anybody tell me what is its result
what things to be considered when designing UPS
define hysteresis loss, eddy current loss and windage loss
