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What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side
CEB,
1453The efficiency of a 100kva transformer is 0.98 at full load as well as half load , for this transformer what is the Copper loss at full load ?
2334explain which quantities change in the starting and the and the running condition in induction motor
1440what is a composite error in current transformers, why occurs & in which it will occur i.e, either metering ct/ protection ct
1854Why open circuit test of transformers is conducted at rated voltage??Why not any other voltage??
1666Post New Electrical Engineering Questions
What is Negative Potential Bias
why induction motors are rated at 0.8 power factor.
which book to refer in electrical engineering for iocl exam & which book for general english.
Can anybody post questions asked in Engineers India Limited Interview? Thanks in advance.
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H.t motor 6600 volt to same motor lt supply 440volt supply applyed to h.t motor to effect....
How does a tertiary winding filter harmonic(espcially 3rd one) from entering into load system?
how can motor both beasrings insulation resistance can be check?
hello everybody. what does an abnormal stator winding impedance or dc resistance show? thanx
what is method for testing CT
If we have 11 kv RYB Phase single core cable near about. Then wht effect and losses
Define transfer function?
Motor,transformers,capacitor tubelight etc....
What will happen if we on 200kvr capacitor bank(11kv in bus)If there is low load on transformer (1.5 mva 33/11 kv)
