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what is the working principle of contactor and conditions of
normal open and normal close on it?
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What is the differentional relay...what is the work of this in power Tx. how it is works..
what are the specifications we must look at to select a relay for any capacity motor?
how to identify vector group of three phase transformer by voltage method?
What are the basic component of a cro?
star delta starter contorl circuit... drawing..
what is the use of permanent magnet generator in exciter
How to calculate Temp from Resister from PT100 equation,
What are the weight of 800KV DA,DB and DC type tower ?
in shunt clippers why a resistor is used in sereis with the input
does a DG set has low fault level as compared to that of a transformer.If yes then why.
hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.
What is Traction? 1KVA Alternator, How much urrent taken?
what are the differences between 'exhaust fan', 'heavy-duty exhaust fan' & 'super heavy duty exhaust fan'. what are their power ratings ?
Hi My dear all Friends, There is a question regarding HVAC Engineering and widely used in Power Projects. Question- What is the diffrence Between REF, SEF and Differential Protection....???? Where REF - Restricted Earth Fault SEF - Senstive Earth Fault.
We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?
