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Three phase alternators are connected in star connection
|Why does the phase voltage of two healthy phases become
equal to the line voltage in case of an ungrounded neutral
3 phase star connected sytem when a single line to ground
fault occurs ?
|in an open circuit. test there is no
but secondary. ia open then no
urrent have to flow
but there a smaller current flows
|What is the standard height of installation of Socket &
switch from Finish Floor Level as per the IEC/IS Rules?
|1) name the communication cable and how it is communicate
in between plc to modbus , plc with hmi?
2)name of the communication cables?
|what is VFD and how to save the power by using VFD?
|Why we say three phase voltage 440v.
|power is the product of voltage and current.so we can
measure the value of power just by using ammeter and
voltmeter.......then why do we use a wattmeter?
|we have one ups its neutral is not earthed.its one
distribution MCB has a earth fault.but we can not put off
any MCB.so how to find out that in which circuit is earthed
without isolating the breaker.
|what is mathematical relation between ac to dc current
how will convert Iac=50amp to Idc
|In case of legging current of 20°, pf is .94 and leading of 20°,pf is .94 , in mathematicaly both are same but in realy how it is differ ?
|if AVR fails in alternator. what will be the effect.
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