Answer / ravi

Differential Protection is intended to protect the
transformer windings. For this purpose we need to arrange
the CTs on both primary and secondary side of the
transformer and connect both the secondaries in such a way
that whenever the fault level increases above the threshold
value then the the associted relay will trip the power
circuit.

Why temperature rise test is conducted in bus bars and Isolators?

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what is DAR test?

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transmisssion type

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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 ).

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1 Answers  

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What types of question are done for diploma students in aptitude test

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What is inrush current?

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meaning of two lines in between the transformer single line diagram??

3 Answers  

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what is the power factor of choke coil used in tubelight

12 Answers   Bajaj,

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