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when a pure dc signal is sent through a moving iron meter, what will it read?? dc or rms?? when a variable dc signal is sent through a moving iron meter, what will it read?? dc or rms??
GATE,
1 2876what is an isolation transformer??? what is its purpose??? what happens if it is not used where it should be used?????
2 5211how does the terminal voltage of transmission lines increase when a capacitor is connected???? This happens not only in transmission lines but also in all circuits. How??? When a capacitor is connected in a transmission line, capacitor also takes energy from the same supply. But how is it able to increase the terminal voltage??? Practically What sequence of events happen during increase in voltage???
2177How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?
2043what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.
ME,
2335a 120 60 watt incandescent lamp has to be operated from 50 c/sec 1 phase ac supply. in order to do this a circuit element has to be connect in series with the lamp. which one of the following sries element is preferable.
SSC,
1 3963Post New Electrical Engineering Questions
how many stairs have you climbed while you were coming
HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT SWITCH BOARD,MLDB,ACB,BUSBAR,ETC...?
How we can calculate the Amps for the cable Ex:- For 1sqmm wire how many amps we can draw (calculation)
what will be happen if earth point is being used for as a neutral point for raw power , and same will be used for ups earthing
Define stepper motor. What is the use of stepper motor?
What should be the values of settling time, peak time, steady state error, overshoot, rise time, MPOS (Maximum percent over shoot) to keep the system in transient state, to keep the system in steady state ?
How to decide cable tray size?
STATE WORKING OF VACCUM CIRCUIT BRAKER?
Difference between drift current and diffusion current?
How can we measure earthing resistance test (Earth meggar) of Transformer neutral pit while in live condition?.
Any one can explaination about calibration with rotating sub standards?
What is I to C?
i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value
what is the VA(Volt-amphere)? define with calculation?
we are having 110 Kv,250mA Electrostatic precipitators for coal fired boilers. what will be static voltage and current after discharge and what time it will remain before earthing?
