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During Starter Panel Com missing I Found The Main Incomer 40Amp MCB 10KA Trip When Motor Change Star To Delta Motor Rating 20HP BUT When We Use Same MCB To Other Motor It Does Not trip Or What Is Necessaries for Star Delta Starter MCB SFU MPCB OR MCCB And What are The Breaking Capacity of MCCB in the Motor above 15HP
1876at high temperature conductivity increases for conductor what will happen for long transmission when temperature is high?
1 4269I have connected 04nos. earthings to a transformer through 04nos. earthing pits seperately. 02nos. earthings are connected to T/F body, and 02nos. earthings are connected to T/F neutral.T/F capacity is 2000KVA, 11KV/415V. But after completing of 02 years successful operation ,we are facing following problems- 1. CT/PT occured blast one time 2. HT cable box occured blast two times 3. One body earthing strip and one neutral earthing strip of transformer are overlapping at some places. Whenever these two strips are pressed at overlapped points, they made spark. What is the reason of spark? Please explain the reason & rectification of above problems
5 10221when we r using single phase load and we have power cable of 3.5core with .5 of neutral and neutral is suppose to the returen path of the phase how much current will flow in the neutral.reply.
2 5009why do we measure VIBRATION in -24vdc and why we adjust gap voltage -9vdc to 10-vdc? i am trying to get this information since 5 years, yet i haven't get reliable answer, i hope i can get from you.
1856What should be the voltage between Neutral and Ground in secondary side of the step down transformer (230 V to 110 V) with no load condition?
2035Can you use step up generator transformer of voltage ratio 16.5kv/420kv in place of step up generator transformer 15.75kv / 420 kv
1 3645What is power factor ?What are the benefits of improved power factor & how. Please explain with examples.?
ABB,
5 12985Post New Electrical Engineering Questions
How generating electric power export to grid from the generating station ?
What is the role of Dedicated earthing in UPS System?
what are the sample questions asking to the test cunducting for electrical superwising lisence test?
What is meant by reset level of the relay?
all details of DG UPS HVAC
How it can worked plc based electrical system And which type of software using.
how to calculate the breaking capacity of different breakers.
at what basis/standard we have to arrive the current density of aluminium/ copper in busbar?
hi this is hema can anyone mail me previous years questions for the APPSC-A.E.E (in electrical stream.) ......thank u.
Whar is the KvA rating of 33Kv substation & actual kv rating of power generaating station.
why we not used 11kva as a direct our electrnics component.
how to test YNyn0 vector group in transformer?
What are the necessary components of the feedback control system?
what is the difference between "Rotary bypass isolation switch and Normal bypass switch" pls share indepth techs?
what is the formula for hv test for cable and circuit breaker..????
