WHEN SINGLE PHASE SUPPLY AS 220V, WHY THE 3 PHASE- 4 WIRE MEASURED AS 440 VOLTS INSTEAD OF 660 VOLTS (220 VOLTS PER PHASE i.e 220x3 = 660 volts ).

1 Answers  

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what is the function of turbo in dg sets

1 Answers  

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How to calculate KVA/VA rating of PT or CT from primary & secondary voltage or primary & secondary current?

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What is excitation?

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Why transmission line carryiny high voltage and low current?

3 Answers   apspdcl, Universal Power Controls,

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Why red,yellow,green colours lamps are used in the traffic control?

2 Answers   Samtel,

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What is the drawback of class b amplifier? How is this minimized?

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Any one can explaination about calibration with rotating sub standards?

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What is the operating range(tolerance) of voltage and frequency of grid supply in india?

10 Answers   BARC,

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arcing is due to only capacitance or it is due to both inductance and capacitance? explanation.

2 Answers  

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describe the Tranformer testing procedure

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what is boucholz relay and the significance of it in to the transformer?

2 Answers  

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