we change the speed of the synchronous motor by incresing or decreasing a rotor resistance

1 Answers  

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we have 3*1 MW generator one NGR is common for all it will be selected during paralle our problem is two generator ca be paralled but when slecting third one we need to close NGR selection on third one other wise voltage not matching why?

1 Answers  

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What is load shedding?

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what is effect of brush shift in machine?

1 Answers  

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I am new guy as an electrical engr. in a 100MW HFO based power project. I am in operations division. I have noticed from last few days, my supervisor sends the last 24 hours energy generation calculation to my plant manager. I have noticed, he calculated last 24 hour's generated energy differences in KWH then he multiplied it with a multiplying factor 960. for example: total difference =2.685 KWH*960= 2577.6 MWH. but he does not not know what is multiplying factor 960?? can anybody explain it??

1 Answers   Orion,

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what maximum load will take a aluminum cable of 50mm 4 core.

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how can we check the earth resistance

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my UPS is 600VA with 0.6 p.f and i use it for my computer which has 450W power supply unit, a monitor of 633nW and speakers. Can any one explain this.. because the output of UPS should be 360W (<450W)

2 Answers  

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how many types in CT & define it ?

6 Answers  

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can we use ps class in combination with protection class in differential protection and over current protection.

1 Answers  

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what is the use of breather in transformer?

4 Answers  

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what the purpose of data retrivala panel in substation

1 Answers   NCC,

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