We in my plant one of the transformer showing neutral to earth voltage is 22V how to solve it
3 4516why in some cases the receiving end voltage is higher than the sending end voltage in transmission line (called 'Ferranti effect') ????? whts the reason behind tht???
3 6477Hi If connecting a temp generator 670KVA .415kv with step up Tx .415/11kv. I am given Generator impedances Z1 Z2 Z0 to 100MVA base. Do I need to work out the generator fault current by using these impedances i.e gen rating / impedance. Then use this as my source impedance for the calculations that follow.
16781)Why potential transformer primary site grounded? 2)can be loop between neutral & body for grounding? 3)What is the difference between ELCB &RCCB? 4)Why we use iron core in transformer insted of wooden core? 5)what is the principle of excitation? 6)Why we test the core balance test for transformer? 7)what is creepage?What is the creepage length for insulators at different voltages? 8)How much type of relays used for differential protection of generator,transformer & busbar protection?
5 11842Which is is best option for 33 kv line incomer.I am Desinging the panel for new projects and i would like to get Your opinion on this Vcb or sf6. Please help me with your replies. Thanks D p singh
6 6535Post New Electrical Engineering Questions
what happened when we supply a dc current in dc motor?? can it worked properly?
iam preparing for rrb section engineer post in electrical branch.suggest the right textbook for my reference.fromwhere i will get the previous q.papers?
Please explain, how to test vector group of tranformer(Delta y1) . Thank
calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.
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)
How can I calculate the Mega watts required to run a plant having many electric motors and other electrical components.
can I improve the furnace power factor (10 mva transformer) by adding a capacitor bank before the transformer.Does system power factor vary a lot with the furnace PF?
what is cascade speed control device?and how this device control the speed of motors?
What is the lower limit of break-down voltage of converter transformer.
What do you mean by a voltage transformer?
In constant power region of 3-phase IM torque-speed characteristics, if frequency increases flux A does not alter B decreases C increases D none of above
1.dg on load alarm/stop alarm... 2.dg on load. piu alarm alarm kaise chek krte hai
can anyone explain 11kV 3core cable megger,hi pot test procedure with connection details?
dc supply given to dc generator winding.how is possible? my knowledge is saying the winding will burn. please reply.
what is the advantages of having in-built acvvvf (without seperate inverter in the control panel)in the drive system of elevators?
