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How transformer neutralshould earthed ? Transformer neutral connected to earth mat in substations, right or wrong ?
4 7724in ac system the current wave form becomes zero for every half cycle then how can we get continuous supply can any one answer to this plsss
2 5196How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.
2125will the introduction of capacitor bank parallel with the induction load reduce power consumption
4 9102if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side
1832I have CNC Turning lathe,while doing electrical preventive maintenance what should I do & please brief me plan & shedule for the same.
1 4313If current and resistance in a circuit is increased by 20%, what will happen to its voltage drop??
4 6794Why there are some equipment(i.e:TV) that using 2-pin plug instead of three? What happen if there is current leakage? Are we going to get electric shock??
2135Post New Electrical Engineering Questions
what is subtransient , transient and steady stateac components
Why do we need a separate control desk & PLC control panel in Boiler plant or coal handling plant? Can we provide cost effective Control desk cum PLC panel. Is there is an specific need for control desk.. kindly advice.
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 different between conventional MCC and intelligent MCC? Common controller or controller for each bucket
What is meant by bus bar protection?
what is circuit recombiner and how it is different from circuit breaker
How to calculate the multiplying factor for energy meter with ct ratio given
why the starting voltage drop in a cable needs to be limited?what is percentage of the voltage drop allowed during starting?
what is the id1 & id2 setting in differential protection relay of CSPC?
iam working in power plant. In hot places tube lights are glowing at the end portion only. what is the reason for that?
Difference between on line capacitor and Station type capacitor
specify the inbuilt protections in DG
what are the different methods for the starting of a synchronous motor.
what are the stresses in circuit breakers ?
What is the difference between rated and per unit in transformer?
