Answer Posted / sukhvinder

As we know that in power sytem there is namely RYB phase
sequence. one genrator has been designed for three phase.
if there are numbers of generator running in parralel then
there will generated power have phases of RYB*NO. of
generator(assumed)but all geration will be added in form of
three phases only.

please send previous exams question papers

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kindly send me 11KV MV motor differential protection procedure by primary injection method.

1494

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Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

2247

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please I wont know how to calculate the vector group for power transformer ZNyn11 best regard.

1921

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how can we calculate the ratio of caustic soda and water in lrs.

5899

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Could you measure voltage in series?

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if two transformers are placed parallel & both have fault impedance of 50KA will it increase or decrease show example?

2052

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what happens if earth of 33kv cable is not connected to earthing pits? please send this query's answer to ngrm.sudha249@gmail.com

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what is cathodic protection and why it use in industries?

2349

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How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.

2232

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how we can calculate chiller required ampear?

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what is the function of Moulded case circuit breaker, why it is called Moulded?

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In what cases (circumstances)we should apply P controller, PD controller, PI controller & PID controller ?

2232

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WHAT IS MEANT BY SHEATH VOLTAGE IN 132Kv cable?

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If anyone would like to know or practice for FEWA papers contact me on mohamedrashad2@hotmail.com Just completed the supervisor exam in April 2021

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