what is the surge arrestor?how it operates?what is the range for it?

4 Answers  

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why we can not use dc in our country( INDIA)

5 Answers  

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What is the loss of transformer of 220kv/11kv, 63/80 MVA and 18.05% impedance

0 Answers  

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How to calculate voltage drop in copper and aluminium cable? I have laid 240Sq.mm Aluminium cable for the length of 600 Mtrs in 1 Mtrs underground. Normal load is 150A. Transformer is 630KVA, 6.KV/433V. But, I am getting only 395 Volts when load. How to calculate voltage drop and what is the permissible voltge drop for this circuit?

1 Answers  

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why it is necessary to short and ground of a current transformer secondary side?

6 Answers   Ambuja,

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What is the difference between earthed & unearthed system?

2 Answers   HCL,

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1.25 kg of hydrogen are burnt with stiochiometric air, the mass of air in kg required is

0 Answers   Caterpillar,

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A 6-pole, 50 Hz, 3-phase synchronous motor and on 8-pole, 50 Hz, 3-phase slip-ring induction motor are mechanically coupled and operate on the same 3-phase, 50 Hz supply. If they are left open-circuited, then the frequency of the voltage produced across any two slip rings would be

2 Answers   L&T,

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3.The slip of an IM UNDER FL condition is about.....

1 Answers   SSC,

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hi friend i am going too attend for hpcl in this month please help me by sending written test question papers i am in the stream of E.E.E

0 Answers   HPCL,

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why transformer neutral and CT Secondary neutral is connected to earth?

3 Answers   NCC,

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In 3.5X150 Sq.mm cable what does 150 stand for outer dia or inner dia?

4 Answers  

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