What is mean by spike arrester(Voltage Operated)
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can we use the same fuse for both ac and dc?
what is the std. earthing resistance for 440V system or m/c, 33000/440 Volt substation? What is the std.?
what is the differnce b/w voltage and current
what is IP65 & What is its advantages
why phase always came one direction in 5pin socket(right hand or left hand) which direction and why..........?
Where is servomechanism used?
We have 250 KW x 2 motors, which are load from 25% to 100% varying load in every minute , so how can we compansate the power factor. pl give your opinions on the above subject.
in 3 phase induction motor resistance value is how much
what is the difference between neutral
why indicated sypply only by 440V in 3-phase system.
can anyone help me regarding bout Electrical designs and calculations .. which text book should i follow as i am a trainee engineer.Description of my work which is Electrical designs like cable sizing, lighting, lightning, Gensets sizing, motor sizing, transformer sizing, generator sizing, circuit breakers, PDB MCC PCC SLDB MLDB panels, Single line diagrams mainly, substation desings, cable routing and layouts, reactive power compensations, power factor improvement, voltage drop calculations, power generations, power transmission, power distributions all calculations.Please help me
How transformer winding & oil gets heat.