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why we are caling 440 volt 3 phase supply instead of 660 volt 3 phase supply? because each phase as a voltage of 220 volt. if anybody know the answer for my question please send it to my mail id. thank you.
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3 23476what is power factor? how can we correction the power factor if this is high or low? If anyone know please please send the answer on my email id ( kumarkirshan@in.com )
5 8460Can I use distributon class/transmission class Lightning arresots for protecting the building? If not why please explain?
1952Post New Electrical Engineering Questions
How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).
How do you select the pickup value of the relay?
why the check zone and main zone are used for Busbar Protn. scheem?
Difference between low impedance and high impedance Restricted Earth Fault
What is critical disruptive voltage?
What are reasond for high wattage in single phase induction motors
In a tap changing transformer where is the tap connected, is it connected in the primary side or secondary side?
Define the overload capacity of the motor?
Why is remote backup preferred to local backup?
Explain the operation carried out in thermal power stations?
Difference between rating factor of cable and derating factor of cable?
explain the mode of metal iranafer in Co,welding
I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???
could an induction motor be used for regenerative braking in electric-train control? in this type of application would some scheme have to be devised to obtain low synchronous speeds while braking? would induction-motor drive, therefore, be suitable for passenger service?
What is the maximum and minimum rating of UPS?
