what is derating?, why it is neccesary, it is same for all means for drives, motors,and cables.

1 Answers  

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what is practical efficiency of power transformer..?

1 Answers  

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in a dc shunt motor what happens if motor takes high current,no speed

2 Answers  

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How much current can a 3-1/2 core 100 mm wire carry?

3 Answers   Epitome, Focus, Focus Energy,

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what is differance between dirty earthing and clean earthing and their applications

2 Answers   CB&I Lummus,

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in three phase with neutral connection, what will happen,if the neutral is in open condition with single phase distribution panel

4 Answers  

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why do we earth the tandelta point of a power transformer bushing?

1 Answers  

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L&T ACB C-POWER OF 800A FAULS TRIPING AT THE TIME OF 110KW MOTOR STARTS WITH EARTH FAULT RELEASE

1 Answers   Ambuja,

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WHAT HAPPENS IF STARTER OF A FLUROSCENT LAMP IS SHORT CIRCUITED AND WE PUT THE SUPPLY ON?

1 Answers  

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How to calculate the average power factor in 3 phase unbalanced system

5 Answers   Bhel, MacLellan,

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Why cannot we insulate HT over head cable to avoid ionization of air around the HT Cable?..By this we can minimise corona loss also..

1 Answers  

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Three phase star connected PT transformer primary side one phase fuse is blown what will be the output in secondary side(Secondary side also three phase star connected)

1 Answers  

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