what is the difference between surge arrestor and lightning arrestor ?

6 Answers  

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defination of static variable compensator

1 Answers  

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How to know of any cable size if there are not written on cabl?

0 Answers   APGenco, El Seif,

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what is the difference between electrical & electronics?

4 Answers   JSW,

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what is strip power factor?

0 Answers   TATA,

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What is the out put of a CT? How the ratio is decided ?

1 Answers  

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how rated the neutral voltage of transformer and reactor, e.g. 400/220, 200MVA transformer have neutral voltage of 33kv. and reactor voltage 145kv. how this rating decided?

1 Answers   MEIL,

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TO CALCULATE THE RESISTANCE OF GRR OF HT MOTOR 400KW WHEREAS STATOR VOLTAGE 6.6KV AND ROTOR VOLTAGE 705V AND ROTOR CURRENT IS 346A.

0 Answers   Bhel, NTPC,

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Explain the process of commutation in a dc machine.

0 Answers  

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why name plate detail HP/KW rating of a motor is different from measured value HP/KW using formula?

1 Answers   MAHINDRA,

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when i am going to take trail on a 3ph sq.i/m motor 5.5kw, i observed that RPM of the motor is very low as compared to the rated RPM and also it rotates in clockwise in first ON command,and anticlock wise in second ON command. finally i observed that on phase is no available . but iam not clear about, why the motor is rotates in both directions without any phase interchanging.pls answer to my question.

1 Answers  

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why voltage drop will occurs in 3 phase line?

12 Answers   ABB, Servo,

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