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how can i find cable size from current rating?
what is the difference between 50 hz freq. and 60 hz freq.? which is better and economic in them ?
i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value
is there any role of power factor with frequency variation? and how we can manage the frequency variation?
what is circuit recombiner and how it is different from circuit breaker
Why the field rheostat is adjusted such that the voltmeter reads 380V
operation of diesel generator
What is the formula for calculating no-load current?
what is the condition for YnD11
What will happen to the protection and metering, if the polarity of a single or two PT/PTs in three phase system is reversed? Please provide reference if any.
in control scheme dc logic wiring commonly using negative loop,what is the reason?if we use positive looping what will happen?
What is error of a measurement?
how can calculation ate Amps for cabel. Ex-for 1sqmm wire hou many amps we can draw
What is MSL designation of a motor and same may be provided in details.
what clearance required for 4.5 mva dry type transformer?
