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How to test the vector group of a Yd11 transformer? what are the relations to be checked between various vectors to confirm this vector group?
4431how rating of transformer is selected for any new plant/what kind of load is cosidered/what kind of fadtors are considered/ pz give standard procedure
2 4660What happen if you keep open the Neutral Grounding Switch in open condition of the HT Generator at starting and again on load if it open then?
1 4895by what factor the starting current is used when comparing star and delta connection for motor starting?
2038In oil transformer which oil is used & what should be the insulation resistance & heating capacity.
2 4932hi.. i am krishna. i've complide my diploma engg.in electrical.i applied many places for jobs.but i am always fear from written test.ican't get success in it. i think my basic engg. is weak..show me some idea please..!
5 8222Post New Electrical Engineering Questions
What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer
What is the function of auadag in a cro?
Give some differences between open loop and closed loop?
What is the main use of rotary phase converter ?
Is MEN and RCD related to each other ?? IF yes then how??
IF DISTANCE IS 100METERS B/W AMP.METER AND CURRENT TRANSFORMER WHAT WILL BE AFFECT IN ACCURACY .METER CAN SHOWING ACCURATE CURRENT OR NOT IF NOT WHAT CAN I DO TO GET 100% ACCURACY.
what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end
Inverter. converter. Ups.MCB.solar.alternators. motors.
what is the meaning of 5% droop or 7% droop in AVR?
HOW TO TEST A LIGHTENING ARREST ER ?
what is the difference between vector scale and vector diagram?
what is 400kv doble circuit quadpole tower?
How to calculate Voltage regulation of 22 KV Over head Line.
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...
