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.

if we keep frequency constant can we cal a synchronous generator as a dc generator

2 Answers   Cummins,

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In auto transformer if power transferred inductively and conductively are same, the ratio of output/input voltage is A 1 B 0.7 C 0.5 D none of above

2 Answers   Getco,

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What is T’Q and X’Q and X’D ? and what is saturated as well as unsaturated ?

0 Answers   XX,

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In star delta Schematic can we connect OLR in delta circuit

2 Answers   ABB, Lanco,

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In 90 kva alternator that produce the output voltage is 115(p-n),200(p-p) at 1500 rpms means what ampere it produced ?

0 Answers  

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how to make an earthing certificate

0 Answers  

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what is the use of permanent magnet generator in exciter

0 Answers   TATA,

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How are harmonics produced in AC machines?

4 Answers  

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What is the lower limit of break-down voltage of converter transformer.

0 Answers   Tata Steel Limited,

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how can i increase the excitation on full load running engine??

1 Answers  

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What are the functions of temperature scanner in power transformer?

0 Answers   HCL,

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How many Zones can be in Conventional type fire alarm system & how can we detect the fire in Conv. type FAS?

0 Answers  

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