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AC current is flowing in a wire in your home how can you
measure it(name of the instrument)
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why booster transformer is used in sumpners test conducted on transformer????
Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?
what is the importance of earthing system on the generators big capacity and small?
why does make gain margin and phase margin on same plot.?
Why electrical power generation and transmission done in 3 phase system not more than 3 phase ?
For refrigerators the motor current is raised beyond its rating on both conditions when the voltage of the system is more(say 270v) than the rated voltage(220v) as well as when the voltage of system is less(say 160v) than normal voltageof 220v, why explain?
I am apply the AAI. So i want electrical sample question paper in technical with answer my id is vijayjobsmart@gmail.com
(In MEP services) HVAC in AC Plant room what else can we provide if the chiller is not considered?
What is the difference between earthing,ground&nutral?
does the Trivector Meter of three phase automatically takes care of the low power factor and gives the reading accordigly or it does not take care of the Power factor while giving the readings please explain
Differnce between negative Pahse SequenceFunction and unbalance Function?
why not starting switch first connect in direct on line starter?????
sir, Is their any measuring unit of knoking? please explian?
We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application?
what is the chiller and working principal
