Answer Posted / ramanharikrishnan

High Rupturing Capacity

how calculated Transformer losses.

2024

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wow to calculate the transformer rating(KVA)

2259

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What are the basic & Majour problems in UPS ?

2117

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actually i can't understand what is 3dB ? and it's really not clear to me.please any one let it me be cleared.

2245

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What is servo motor and what are the applications of servo motor?

2693

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What is the difference between amorphous core transformer and CRGO core transformer?.

3732

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HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.

1951

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what is gridrotor resistance starter

1867

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Does all the output contacts (N/O as well as N/C) of a Numerical relay operate when relay receives a binary input/inputs or contacts are designated to specific logic input/inputs and only these contacts operate?

2076

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if there is nutral in phase why we use earthing wire and grounding? even at fault condition the fault current flows to neutral (it is a lower path)

1825

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What is meant by coupling capacitor?

1057

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at what basis/standard we have to arrive the current density of aluminium/ copper in busbar?

2117

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can I improve the furnace power factor (10 mva transformer) by adding a capacitor bank before the transformer.Does system power factor vary a lot with the furnace PF?

2039

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can anyone send me some sample question regarding power grid corp

2200

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does buccholz in a transformer use batteries

4858

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