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how to differentiate a mpcb,mcb with a contactor? Explain their working operation
in science exhibition how lamp can blink when you clap near the lamp ? thank you
what is the differences between microprocessor and general purpose computer
How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?
How many types oil using in transformer ? How many letars using in transformer..?
What are chief characteristics of state-space method and its techniques ?
What is difference between isolator and circuit breaker?
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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
transformer spections :: input voltage 0-110-230v; output volage 0-10-12-14v; amp=3A using CRNO CORE, capcaity=50VA primary turns = ? ; secondry turns =?
Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?
what is inverter and converter
explain with diagram how to protect transformers and substations from over current with help of CT's?
what is the difference between rectifier and converter and commudator?
Where should the lighting arrestor be placed in distribution lines?
