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To measure insulation resistance of 11KV cable between core & armour, what should be the test voltage & duration?
4 14876I have draw the 350A DC current, so what is the size of cable i can use? Give me the answer with formula
1 4528Sir, I have applied for the of Assistant.engineer of NPDCL. please send me all AP TRANSCO AND JENCO solved papers of previous exams . I requested send me the papers to my id as soon as possible (rajanikanth_peddi@yahoo.co.in) (This is very urgent) Thank You,
2950WHAT IS MEANT BY vfd(VARIABLE FREQUENCY DRIVE )HOW CAN WE APPLY VFD TO MOTOR ? I WANT FULL DETAIL IF ANYBODY KNOW THE WEBSITE FOR THAT PLZ SEND .THANK U
2 7453Any one Give me formula for to increse the power factor, 0.8 to 0.95, How much the KVAr Required
9 13599A heater capacity is 3.0 KW on 415V . if supply voltage is 380Volt . what is heater capacity on 380volt . and how calculate and give formulas . Prakash veer singh Roto power Engg.
5 11546Post New Electrical Engineering Questions
show the single line diagram of star delta starter with single phase preventer
how can calculate 1kva generator running time in 1 liter keroscene
How to calculate the heat load for a electrical room
what is PID control in VFD drives?
How isolater function when installed inelectrical 440V wiring
I am an American living in Vietnam and I have recently gotten a refrigerator from Japan and it is rated for 100 vac, but the power here is 220 so I bought a voltage stabilizer it has a 1 kva output rating. Can you please tell me what the amperage is? I'm confused and without a working fridge.
What is the principle of HIGH SPEED DIRECT DRIVE MOTOR ?
How to design harmonic filter at the project stage without nowing the harmonics levels
What is VCB? where it is installed at SP. What is SP?
what is plunger and what's the use of it in motor alignment?
mention hazard experienced during installation
how to estimate wiring ins roughing ins. and boxes
In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?
I need a formula to calculate the size of cable as per load but in the terms of length. Please Reply me as i search lot of sites but i did not get the answer.
1. What is the exact formula for one weber? for example,(one ampere = one coulomb electron of electrons crossing a point of conductor at one second. i.e, 1A=1Q/1sec)
