Answer / bablu kumar

250 AMP

Why there are semi conductor layers on conductor and XLPE insulation of HT cables

1 Answers  

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Why the earth to phase voltage is high 250 compare to other two phases

0 Answers  

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why control circuit voltage always chooses to be 110v and 220v? and in where it is 110v and 220v? and in where it AC and DC?

2 Answers  

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What are safety features considered for Lifts during emergency?

1 Answers  

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Is there any Flood lighting system which produces more light (More power consumption 1000W,400W etc.,), white light and restart immediately after power restoration ?

1 Answers  

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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.

0 Answers  

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In motors how many types of cooling systems were used?

0 Answers   NTPC,

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How many turns are there in primary winding? (In Transformer)

0 Answers   Philips,

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What test must you do before powering up a circuit that you have been working on?

0 Answers  

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how unidirectional torque is produced in DC motor?

0 Answers  

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What's the part of OTCC in transformer?

7 Answers   Bhel, RRB,

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if the length, number of turns and area of coil are doubled then inductance of the coil becomes.?

1 Answers  

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