how much resistence in proper earthing?

5 Answers  

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I need to calculate the Battery bank back up for below configuration:- UPS - 120 KVA Battery Bank - 200Ah Volt of each cell - 12 V Total No of cell - 34 No's Can you please help me to get the battery back up time for above configuration...? along with formula

1 Answers   Wipro,

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why we can turn on the phase-A scr in 3 phase converter at 30 degrees

1 Answers   JSW,

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how wud i know that whether i have to use unitized package substation or transformer?

1 Answers  

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why actual valve timing diagram is different than ideal valve timing digram of a 4 stroke engine?

0 Answers  

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How to select KW/HP rating of motor for particular application? Is there any relationship od RPM?

1 Answers  

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how does the rotating m.m.f is produced in the 3-phase induction motor and how the poles are created in 3-phase induction motor ?

0 Answers  

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Dear Respected sir how to test ABB REX521 protection relay by relay tester.

0 Answers  

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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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If we have two nodes A and B and Vab is the potential difference between these nodes then which node is called reference node a.node A b.node B c. Ground node

1 Answers  

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How a band pass filter is constructed?

0 Answers  

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What is the use of Isolation Transformer, and Neutral is using for return path, finally this current is going.... but same time the voltage of the neutral should be below 1 V...

6 Answers  

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