Answer / thowsif

For the Operation UPS Battery is Essential,

UPS Will work without a Battery also,but in event of Power
Faulure it will not supply the power to the load as thier
is No Backup Power..

Answer / prakash veer singh

These system is not working . Because battery is part of
those system. without battery these system is not complete.

Answer / bala.a

yes mr . Ram statment is correct . This system is working
in Nokia compus- chennai

Answer / ramakrishnan

UPS can Work without battery by using a technology called
FLYWHEEL where it can give a back-up of 20secs.

This system is currently working in france and also in some
other countries where Auto transfer switches ON their DG
within 10secs whenever the EB fails.

Answer / ram

Mr.Bala Can i know the brand of UPS working in Nokia

why generaotr rating is in kva and dc motor in kw?

7 Answers   Bhel, NTPC,

How to calculate KVA/VA rating of PT or CT from primary & secondary voltage or primary & secondary current?

0 Answers  

the 230 value of voltage which is use in our home . is that value is rms, aerage or peack value of voltage?

5 Answers   L&T,

basic differance between electrical and electronic.

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how can we change the phase angle b/w two phase?

2 Answers  

1) What are your personal strength? 2) What are your personal areas of improvement? 3) What are your expectations from from a particular job? 4) what are your carrier objectives?

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what is d meaning of inrush current of a trafo ? how u can calculate this ?

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what is the difference b/w conductor and semicoductor

1 Answers  

what is rotary ups?

2 Answers  

In generally how many earthing required for power

4 Answers  

what is the difference between rectifier and converter and commudator?

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how to get electrical supervisour certificate in gujarat

0 Answers