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use of PIR in ehv breaker
For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?
if two transformers are placed parallel & both have fault impedance of 50KA will it increase or decrease show example?
what questions will be asked for 11/33KV licence interview APSEB hyderabad. Can any one share question and answers.
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Why frame of the motor is specified?. If we mention KW and voltage level,automatically frame is decided or separately frame is compulsory to mention?.
what is induction furnance? how many phase supply given io its coil for 15 or 20 ton furnance?
How can we calculate cable size in Low voltage & high voltage
for 100 HP Induction motor service factor is 1.2(SF) we placed a VFD at the motor side load is balance with 0.3 Amp's Phase to Phase but at incoming of VFD load is un-balance with 10 to 20 Amp's what will be cause of load un balance
What is difference between SMC supportg and Glass Fibre Reinforced Plastic Support.
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which IS or IEC is used for earthing,breakdown voltage of transformer oil, hv/pd testing and all type of electrical testing
standard earthing rating for power line..
What is the maximum No. of out going mccbs permitted from an LV distribution paqnel? What is the ampere relation between incomer and out going switch gears/mccbs?
i need of the bhel question papers along with answers and also give some website names for the downloading question (electrical and electronics engg question)please help me....
