Answer / rabi

Ac-1 contactor is used for "Non-inductive or slightly
inductive loads, resistance furnaces".

Ac-3-contactor is used "Squirrel-cage motors: starting,
switching off motors during run-ning."

Whether the Dc motor Droping the power factor like AC motor if lot of motor running in factory is it necessary to connect capacitor bank

2 Answers  

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How to check AC & DC Choke

1 Answers  

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Why are tertiary windings used in transformers?

2 Answers  

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what is servo motor and how to work it.

0 Answers  

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What is ht lt switchgear.

3 Answers   Bhel, HBL Power Systems,

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We have Diesel generator of 200KW but load connected to it only 100KW. Pl. brief me about fuel consumption.

4 Answers   ARDE,

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what is neutral grounding? why is it required? what is neutral grounding resistor and how is its value calculated??

11 Answers   NTPC, ONGC,

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We have one Energy meter for Measuring the voltage,current,power,energy(KWH,KVARH,KVAH) & power factor.The problem is that the meter does not show whether the PF is lagging or leading.So i want to know that is there any way or calculation to find out that whether the PF sign (lagging or leading) depending upon the above mentioned parameters?

4 Answers  

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what is carona and how is occur?

5 Answers  

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We are using 4 MVA transformer and we provided 2 separate earthing pit for Body and 2 separate earthing pit for neutral, can we connect separate body earthing pit to other earthing pit (Equipment earthing)?

1 Answers  

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low voltage grounding is done by?? 1)solidly gnd 2)ressistance 3)reactance

1 Answers  

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How to work to the x'mer as a induction motor?

1 Answers  

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