Interested to Buy Any Domain ? << Click Here >> for more details...
WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER?
WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN
TRANSFORMER?
- 5 Answers
- 25850 Views
- ABB, Nissi Engineering Solution, NSL Sugars, I also Faced
- E-Mail Answers
Answer Posted / bijay
well things are explained well above.
i wud like to add something
WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN
TRANSFORMER ?
Ans:-First thing under an abnormal condition(during fault)
the neutral point of trafo rised above the ground potential
and attains a positive potential,hence a current will flow
through the trafo neutral to the ground (mostly the trafo
neutral is earthed with or without a NGR.
As a whole the bottom line is trafo neutral will rise to a
potential which is not desired,protection against the same
is designed,which cut of the supply it this condition
prevails for a longer time( this time is descided at the
time of designing the system.
| Is This Answer Correct ? | 13 Yes | 6 No |
Post New Answer View All Answers
At full load wat is the motor p.f And at no load will is the motor p.f?
What happen if we apply square wave or traiangular waveform voltage to the transformer primary winding instead of sinusoidal wave?
what is mppt (maximum power point tracking ) and how they used in solar power generation ??? what are the main components used in mppt?????
how can you size an automatic voltage regulator?
I want to design a heating coil of 80/20 nicrome for 3.5KW please give me the calculations choosing for physical dimensions assume coil voltage will be 110V AC assume necessary conditions
why are installed water leakage detection system data centers & server rooms
TYPE'S OF BREKAR ,WHAT IS TRANSFORMAR & SAFTY. STARTER DOL & STAR DELTA STARTER.
why the starting voltage drop in a cable needs to be limited?what is percentage of the voltage drop allowed during starting?
what is the advantages of having in-built acvvvf (without seperate inverter in the control panel)in the drive system of elevators?
am commissioning the trafo without connecting the neutral therefore unbalance will occur what is the alternative solution for this?
If 24 KVA AVR having Input voltage 200-400v, Output voltage 415+-1%, what will be the voltage if Load is 13A.
a starter used for squirrel cage induction motor?
it is possible to measurement of tension of slipring induction motor(SRIM)carbon brushes, any maesuring instruments are available in the markets.
In constant power region of 3-phase IM torque-speed characteristics, if frequency increases flux A does not alter B decreases C increases D none of above
i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value
