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What are the protection schemes used for protection of
transformers ?
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A 1F capacitor is charged to 100V initially. A 1H inductor is connected accros the capacitor througha a switch. The current in the circiut when the switch is closed is____
What are the advantages of vscf wind electrical system?
A low wet bulb temperature indicates
how oti and wti connections are different from each other?
what is the most permissible winding temp when we conducting a generator load test?(condition no load)
What is the diffrence (Technical & Construction ) between CBCT & Normal CT?
describe the phenomena of vacuum interruption in C.B
How to check the Bushings of the transformer?
please forward me the type of questions which would rise while me attending to 33KV Electrical License to my mail ID:vadrevu_raghava@yahoo.co.in
what is the affect of earth's magnetic field on the frequency used in aircraft???
I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?
difference between high and low impedance BUS BAR relay??
Why in power plant projects we see DOL starting method used for motors upto 160 kW instead of star delta method
I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?
Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm
