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How to calculate Battery back up time for a 400 AH Battery bank having a load of 20 Amps and charging time required to fully charge this battery bank?

2 Answers  

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Our Company's Contract Demand is 110 kVA. We use 12 Capacitors each of 12.5 kVAr Capacity to maintain Power Factor of 0.99. So, what steps should we take so that our Contract demand does not exceed 110 kVA?

1 Answers   Jindal,

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What is ESP how its work &what is corona ? con insulater&drive insulater where it is used ? Any body says that pls

3 Answers   Travancore Titanium Products Ltd TTPL,

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what is the formula for hv test for cable and circuit breaker..????

0 Answers  

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What is the difference between earth and neutral

4 Answers   ABB, Tamboli Engineers,

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What is the Surge suppresor? Why using in a UDB's and How it works?

0 Answers  

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hi i m going to attend bhel interview on 22nd sep 2008 for ET(electrical engineering).pls guide me how to prepare for the interview.i am a fresher.

1 Answers   Bhel,

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how can we represne the analog signal and digital signal if want to measure the speed and we have to use PLC

2 Answers  

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What can a fresh(without experience) electrical engineer contribute to NTPC( Or any PSU company) growth?

3 Answers   NTPC,

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Explain UPS

1 Answers   Powerica,

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Define delay time.

0 Answers  

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plz send me the placement interview question and answers of whizchip(technical and apttitude)..i have an interview in next.

0 Answers  

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