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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.
3381What are the test involved in DG auto synchronizing panel before in manufacturing place before dispatch.
2 5378sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.
1 3466sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.
1901Can you please explain creepage distance in detail, for a 6.6kV cable head what must the distance be and how do you determine it?
2895Post New Electrical Engineering Questions
how to decide the panel size like MDB ,SMDB PANEL SIZES
Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.
Give the topology of current amplifier with current shunt feedback?
define hysteresis loss, eddy current loss and windage loss
what is difference between 5A and 100A CT constructional wise and operation?
Why can't we take NO LOAD TRIAL of motors having V1 mounting??
The efficiency of a 100kva transformer is 0.98 at full load as well as half load , for this transformer what is the Copper loss at full load ?
give me atleast four differences between circuit and network
Why the standard of ambient teperature mentioned as 40 degree celcius in machines.
Assuming that a dedicated neutral earthing transformer is provided for each GT generator, when the two generators are running in parallel, has consideration been given that the earth fault current from one generator stator winding be split between the two neutral earthing transformers? If so, what adverse impact will this have on the operation of the 59N and 27TN devices?
state the working principle of incondenscent tube?
What is the Temperature to be set in Thermostat provided in Marshalling box of the Transformer / Motor.
in indoor type circuit breakers why only the corner breaker trips specially during cold season. What is the reason.
Post possible questions for Power Factor Panel FAT / SAT
what is the formula of starting current of 3phase and 1 phase motor???
