A 400KVA Transformer has 400Hz frequency.if frequency is changed to 50Hz,then what will be the new KVA rating?

2 Answers   ABC,

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design a 3 bit synchronous and asynchronous counter using T- flipflop

0 Answers  

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Dear sir, How to calculate 3.5 core pvc aluminium armoured cable meter wise,give with best examples.... please help me in this regards....

1 Answers   Modi Builders,

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what happen when ac motor is connected with dc current

4 Answers  

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What is the exact formula for one weber of magnetic flux?

0 Answers   Bhel,

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Why we oil in tranformer/

5 Answers  

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Hello, I am just preparing my self for a university interview and struck on the 11kv ring main unit system network. I just know that ring main unit has total three breakers, fuses and use to supply a power to any load/ building without any interrupt. But i am not be able to visualize the connections, either Ring main unit getting power from two different power sources? or there is always one feeder in complete ring circuit??? I would be highly thanks full of you help me.

1 Answers  

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What is dynamo?How it works and what is the function of dynamo in a DG.

0 Answers  

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What is rotating transformer? Which machine is used specifically as rotating transformer?

3 Answers   TATA,

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what is the minimum (Common factor) insulatin resistance of the following a, 4mm sq wire b, cable from 50 mm sq to 800mm sq

0 Answers  

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Why auxiliary transformers are not connected in parallel in primary stations?

0 Answers   Adweb,

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How current is reduced in STAR connection?

6 Answers  

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