Answer / lipika

1.differential protection or merz price protection
2.modern differential protection
3.stator interturn protection

Answer / km

when the protection trip is operated and the has not open
for less than a one second or depend upon our setting it
will gives an alarm.

What will be the total current for 300kva UPS if it runs on 40 to 45 percent load. Is there any formula for to calculate the exact load.

4 Answers   Sodexo,

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Why HT cable have only 3 core ?

10 Answers   Jindal, McDermott,

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why the inserting resistance in wound rotor induction motor decrease the starting current and increase the starting torque

2 Answers  

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i want all question & answers of the written exam

1 Answers   Essar, L&T, MES, RRB,

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How to calculat the ratio of HT\LT in energy meter

0 Answers  

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How to calculate the motor winding resistance ?

21 Answers   Forbis, L&T, OEGI, VTI,

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What is pole slipping relay? When it is operated?

2 Answers   Aditya Birla,

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when voltage increases then current also increases then what is the need of over voltage relay and over current relay? can we measure over voltage and over current by measuring current only?

1 Answers  

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i have to use generator in my project,which gen. i can use?

1 Answers  

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What is meant by power factor correction?

5 Answers   Aspire,

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Why Ferranti effect not occurs at full load?

4 Answers   L&T,

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why electron not flow in open loop,how they know path is open ?

3 Answers  

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