how can you size an automatic voltage regulator?

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In Star type and Delta type Motors, If one phase will miss/Break then which phase winding will burn and why?

4 Answers  

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In more then 1 phase bulb will glow are not?if yes then how it will glow?

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how to conduct dc resistance test for rotor of an alternator and how to measure the rotor dc resistance value theoritically?

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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.

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What is the difference between MCCB & MOCB?

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Why battery rooms painted with dark colour

1 Answers   BAL, MSETCL Maharashtra State Electricity Transmission Co Ltd, Polycab,

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WHY DO VOLTAGE TRANSFORMERS FAIL DURING EARTH FAULT IN THE DELTA CONNECTED 6.6KV ELECTRICAL SYSTEM

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what is the formulae of calculating voltage drop?

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typically in power distribution substation. 1- Any idea how would be the graph of capacitor bank consumption verses time through the day . 2- How is the switching ( on and off ) of the capacitor bank, per need?

0 Answers   Siemens,

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Is it possible to import & export power through the same power transformer? what will be the vector group normally for both different or same?

1 Answers  

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Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.

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