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where we use 1 phase & 3 phase supply ?what is major advantage using 3 phase over than single phase ?
3 6614i need 24v dc from 230v ac supply how we can getit ? what are the devices &its rating requied for that ? plzz i need answer urgently .thank u
3 9314What is the operating range(tolerance) of voltage and frequency of grid supply in india?
BARC,
10 23085whenever any squirrel or a crow falls on the transformer input line then there is a big explosion and 440 volts of power is being discharged through the neutral line due to which appliances in off mode are also burned.we have earthing for the transformer as well as the bus bar chamber.why is it happening?
1 2951What should be setting for alarm,tripping and cooling fan on for power transformer's oil temp. and winding temp. indicator?
1 2005While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?
1 3595a.)Ammeter and Voltmeter read rms value or avg. value ? b.)What are symmetrical and Unsymmetrical faults?
2 7434Post New Electrical Engineering Questions
hi this is hema can anyone mail me previous years questions for the APPSC-A.E.E (in electrical stream.) ......thank u.
sir pls send the je exam - 2008 and other model question papers..
I need bhel electrical test pattern & paper
In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?
i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400
What is the magnetic field (coil DC ) of Turbo Expander?
How much minimum insulation required between 11kv/3.3kv transformer windings?
Anybody tell me about modbus hex address of l&t trivector meter er300p??I want to read voltage,current,kwh etc via rs485...If anybody have a manual then send on my mail..Brijeshmodi18@gmail.Com
Why squirrel cage motor can only use with low starting loads ?
How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?
please give some hindalco placement papers for written exam
please send 5yearje solved papers on my email himmatsinghnathawat@gmail.com
why lightning arrestor are made in two stack of insulator but why not cvt
Electrical Engineering
Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault
