Why we use stones in switchyard?

3 Answers   Havells, L&T,

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What is critical disruptive voltage?

0 Answers  

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why ground cannot be used as neutral as ground also provides close path for current flowing ?

3 Answers  

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What are the types of control system?

0 Answers  

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1. what is exciting winding, rotor winding, startor winding. and how it works? in ac generator

3 Answers  

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how to design step down 12 V, 1mA small transformer from 220 V AC? Because according to VI relation and power transfer it results bulky...

0 Answers  

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ARE YOU NOURVAS ?

4 Answers  

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what is the working of vfd drives.

2 Answers  

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How you give clearance to a spare feeder.

0 Answers   KSEB, L&T, Siemens,

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Why glands not provided for XLPE cables

1 Answers   Saint Gobain,

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25 kva load,

1 Answers   Voltas,

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a)In a 3-phase 4-wire circuit, a circuit breaker is selected to protect the circuit whose highest fault level is 6.6 MVA. Determine the required minimum breaking capacity in kA. (Note: Covert 3-phase power in terms of kA to find answer.) b)Using the below, determine the required minimum making capacity in kA as a “peak value”. Rate breaking capacity (Icn) ka: Icn<= 1.5 Factor = 1.41 1.5

0 Answers  

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