Answer / ram

ya i thing is correct

Answer / taylor

thanx guys b cas of ya ans i m able 2 complete my projeck
so thanx!!!!!!!!!!1

Answer / rohit singla

UPS is an electronic device which functions as alternative
power source which supply power continuosly to the senstive
electronic devices under circumstances

Answer / chandrahasan

The main building blocks of any given UPS (on-line, off-line
or stand-by) are the charger, inverter, static switch or
static disconnect and battery. The charger converts AC to DC
power which float charge is the battery and feeds
the inverter. The inverter converts DC to AC power, and the
static switch or static disconnect is a solid-state device
used to apply or disconnect AC power. The battery stores DC
power that is used as a back-up power source when
the utility power is not available.

Answer / rk mehta

dear sir,
I have a 2.5kva uniline ups,which works on 148 dc
source, but at present i donot have dc power source, now on
connecting it on ac source it gives indication of presence
of line but on pressing start button nothing happens. is it
possible to switched on the same ups without connecting the
dc source.

how can i change the rotation of the AC single phase induction motor and show me by diagram

0 Answers  

why motor burns ?

5 Answers  

why electrical power has benn needed for speed controller of woodward governor control for biomas power plant

1 Answers  

which of the following loss varies with the load a)hystresis loss b)eddy current loss c)copper loss d)core loss

2 Answers  

I need model question papers for RRB section engineer Chennai... Please send to my E-mail Id:- maitheerainbow@gmail.com

0 Answers   NTPC,

Slip at maximum torque depends on A rotor resistance and reactance B stator reactance C load current D stator resistance

1 Answers  

What type of pipe material G.I or M.S is used for sprinkler system?

2 Answers  

What is the difference between ground and neutral ?

2 Answers   TCS,

What is the advantage of Neutral graunding transformer insted of Neutral graunding Resistance in generating station explain briefly.

2 Answers  

what is split phase ac system?

3 Answers   AMIE,

how can a transformer test by megger?

1 Answers  

what is RMU ?

26 Answers   MacLellan, Shalaka Infra Tech,