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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 3625When 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 4999When 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 8440What are the solutions for avioding sulfide formation at bimetalic (Copper &Aluminium)overhead joints?
HAL,
2 5038In three pin socket normally three pin in between three pins earthing point is more thickness why?
6 13600the 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 5508Post New Electrical Engineering Questions
What is the use of iron core in a transformer?
electromechanical relay type identification example : type=tjmh t-stants for j- m- h-
What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines
how to decide choke rating for drive?
How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?
explain me the relation between torque, frequency,speed,voltage and current in the 3 phase induction motor?
Write masons gain formula.
what is reverse power relay brief explanation and in b/w where it is connected
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
WHAT IS THE FUNCTION OF SHORT CIRCUIT MAINTENANCE CT
1.dg on load alarm/stop alarm... 2.dg on load. piu alarm alarm kaise chek krte hai
Why wind turbines wheels rotate constantly
can we choose current transformer secondary, to calculate residual flux in a power transformer, so as its saturation is close to the saturation level of power transformer?
Atwhat condition reverse power relay will act?
Please explain me abt PQ diagaram in the power sector.
