whats the advandage of PMG in alternator?

2 Answers  

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why the desirable efficiency for a motor is 60%, but in case of transformer, it is above 90%?

1 Answers  

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I have 10 amp MCB for my air conditioner of 1.5 ton capacity. When I connect the ac direct it is started running but when connected through stabliser the Mcb Get trip and air conditioner couldn't start.please confirm whether Mcb is required to be upgraded to 20 amp. There is no fault in ac and the stabliser. Please advice the reason of tripping the mcb when connected through the stabliser.

1 Answers  

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why swinburnes test cannot be performed on series machines?explain

0 Answers  

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Why an ac solenoid valve attract the plunger even though we interchanges the terminal? Will the poles changes?

0 Answers  

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explain the Trip supervision circuit

0 Answers   NCC,

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HOW can i REuse the fused MLL LAMPS & GLS LAMPS at our factory

0 Answers  

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diagram for soft stater ?

3 Answers  

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it is difficult to interrupt a capacitive current because (a)it has a leading power factor (b)current magnitude is very small (c)the restriking voltage can be high (d)stored energy in the capacitor is high

2 Answers   DGVCL Dakshin Gujarat Vij Company, MGVCL, UGVCL Uttar Gujarat Vij Company Ltd,

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why secondary terminal of current transformer should not be open circuited?

4 Answers   ABB,

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What are protections for dty type transformers

0 Answers  

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what is feed back and what are feed back amplifiers?

0 Answers  

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