Name the different control schemes of electric rive.

1 Answers   DVC,

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state types of reflectors in illumination engg. ???????

0 Answers  

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where rlc series ckt used?

0 Answers   ABB,

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One of our gas turbine generator unit "1st stage rotor ground fault" alarm was occured several times. we tried to measure some voltage vulue ground fault protection relay (UNS3020a made by ABB and we measured the value of: Ground: 0.9VDC 5V: 5.8VDC 24V: 23VDC u+: 300 – 350mVAC Rf1: 17.5mVAC Rf2: 17.6mVAC The unit still running and the alarm was reset. As of 6pm yesterday and unitl now no alarm happened again. I our protection relay was defective?

1 Answers  

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how can we check the earth resistance

3 Answers  

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At 765Kv, I have seen the use of PT at line side for metering and CVT for protection, although as far as my knowledge is concern, PT at this voltage level will have huge loss and more cost as compared to CVT as CVT can also perform same function of Protection and Metering? So my question is why use PT and not CVT for metering and protection in order to reduce the cost.

1 Answers  

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SAY CORRECT DEFINITION... WHAT IS EDDY CURRENT LOSS? WHAT IS HYSTERESIS LOSS?

4 Answers  

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why breaker closing coil gets burnt if supply is continously provided to it.

1 Answers   TATA,

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why the motor is rated as kw& transformer as kva

7 Answers   Areva,

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We've 2 diffrent DG's with same capacity (500 KVA). Can we sync them ?

1 Answers  

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is there any difference between inverter and a battery

2 Answers   Cummins,

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EXPLAIN USE OF ROCKING ARRANGEMENT IN ELECTRIC HEATING?

0 Answers  

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