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last week we did the REF relay test by closing single pole (R phase) of CB and apply 380V at the primary of delta transformer. we get 33A at the primary of the R phase star end. but we get 380A at both R an B in delta side. how and why?
1 3629When i went to a interview the interviewer ask me a question for that i cant able to answer him if anyone knows answer me How will you design a capacitor bank for a plant? if my p.f is 0.6 i have to improve it to 0.9 or 1 what kind of steps i have to do? and is there any formula for calculating this?
2 5006When i went to a interview the interviewer ask me a question for that i cant able to answer him if anyone knows answer me How will you design a capacitor bank for a plant? if my p.f is 0.6 i have to improve it to 0.9 or 1 what kind of steps i have to do? and is there any formula for calculating this?
6 8448What are the solutions for avioding sulfide formation at bimetalic (Copper &Aluminium)overhead joints?
HAL,
2 5040In three pin socket normally three pin in between three pins earthing point is more thickness why?
6 13607the distance from my office to d.g is aprox 400mtrs and voltage drops ibn my office near about 40 volt what should i do p[ls suggest.
4 5518Post New Electrical Engineering Questions
What is electrical diversity factor in electrical installations?
What is the working principle of CFL & T5 tube light & 40W tube light with electronic ballast?
Generator,motor and alternator Working principal Please explain easily
in control panel, how can i measuring the distance between one bus bar to another bus bar. then now only for bus bar. in mpcb and contactor also. that means one mpcb to another mpcb how much distance? how can i calculate that.
witch pump used in wtp
How can we checked Killo Watts of Motor & Alternator?
What are all present producing cost of Per KWH of various Fuel?
Write down the brushes of a de machine.
What is frantic effect?
Define bibo stability.
What is the capacitance values of 132,220,400 & 765 kV current transformer
determine two methods to find loose connection in operational electrical system?
What are the different types of hydro schemes?
whats the existence of reactive power and when it arises?
Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.
