When VFD is connected to a 3 phase main supply there is load current difference between incomer to VFD and outgoing from VFD.1 4048
What is the implications when 600 hp motor is started when the unit is running with Transformer of capacity 1500 KVA and DG set of 1000kva1368
AVR is used for the Voltage regulation of the Generator using the feedback signal by exciting the field winding of the generator.But how the field winding will be excited & using what?2 3751
i need of the bhel question papers along with answers and also give some website names for the downloading question (electrical and electronics engg question)please help me....1101
neutral,ground & earth different b/w2 3597
can we use 400w coke instead of 250w choke in 250w fittings2 3426
If a fan get trip and run in reverse direction due to system flow. Now in this condition during starting how can a VFD bring this negative speed to zero and later run in forward direction?2 4029
I have a transformer whose primary operates at 230V, 50Hz for which the secondary voltage will be 12V, 50Hz. What will be the secondary voltage if the primary is fed with 400V, 8KHZ Signal?
what are the maximum available current, voltage ratings and switching speeds of the power electronic devices thyristor, power mosfet, igbt, and mct?1243
why neutral should connect to earth in delta-star type transformer4 6828
Why TAP changer provided in primary side of HT transformer ? and why not in secondary?9 43228
why solinoid coil used in tripping rely?and why not other type coil?1 1587
How to use a insulation resistance tester on a three phase electric motor?2 4753
what is quality factor in series resonance circuit and calculate the factor of voltage magnification? how it happens?
What is the practical way to calculate the cable size for known ampere load?
Define thermal resistance in the context of power amplifier.
DESCRIBE THE CONSTRUCTION ANDOPERATION OF BELT CONVEYORS AND SCR CONVEYORS , DRAW NEAT SKETCHES
which VFD is better ( LT or HT)
how you taken aotitude test
Where servomechanism is used?
Define the three phase formula fuse.
How stabilizer works??
State norton’s theorem?
does the Trivector Meter of three phase automatically takes care of the low power factor and gives the reading accordigly or it does not take care of the Power factor while giving the readings please explain
why impudance relay used for medium transmission power system? why not others?
What is a system?
A 11KV, 1200 A breaker combination fixed in a cubicle for HT motor.Is normally for 11 KV motor fuse is using? if Yes, What range fuse is required?
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