Answer / vikramsena_reddy

inverter means it converts dc source in to ac.

ups means unniteraptuble power supply.

inverter is the part of ups. in ups battery will charge
while its getting power. if power failed this battery
discharges dc voltage, this voltage is convrted to ac source
by innverter.

the earth resistance should be 4ohms. if not the power will
chose least resistance path and there may be a chance to
equipment failure.

Answer / abishekmittal

In inverter the switching takes some time whereas in UPS is
online i.e. the switching time is almost zero. So for all
critical applications like computer, we prefer UPS and for
normal usage we go for inverters.

Answer / shalini

Inverter is off line UPS which will be used for emergency
lightning
UPS is a on line change over, which will not interupt the
load.

mostly the questions were from machines... d.c. machines, transformer, synchronous and induction all theory paper........ few from power system... but the level of paper was easy.....

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