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Can Induction motor run at over rated speed? ( 15oo rpm is rated speed for 50HZ. is it possible to ride 3000 RPM with same motor with the help of VVVFD for continues ride of 100HZ)
3 9549HT motors are generally connected in star, what will be the effect if we connect HT motor in Delta?
6 17435What will happened if the neutral of the (star connected secondry) Xformer disconnected? (if its Above KVA rated one)
2162how we can select a transformer based on a particular load. suppose we have 4 motors of rating 40 h.p , 50 h.p, 80 h.p & 100 h.p. then what rating of transformer we can select. urgent. pls reply
6 20253when we are going to higher voltage level in substations why we are using Sf6 circuit breakers instead of Vacuum circuit breakers.
3 6016what is the formula to calculate the fuel consumption of a diesel generator at different diferent load.
4 24881Hi Recently I got one formula that is Impedence of Xformer = Rated KVA/Root 3 * secondry voltage OF Xformer. Is it Right??????
2 4886Post New Electrical Engineering Questions
what is the difference between vector scale and vector diagram?
What are the basic elements used for modeling mechanical rotational system?
what is the major difference between LIBBP & HIBBP.. which one is most preferable..
An impedance of 100 ohms resistance and an unknown inductance is connected across the capacitor. The resulting impedance is a pure resistance of 500 ohms ifω = 10^5 rad/sec. calculate the values of inductor and capacitor.
We need to current density & short circuit calculation at 65kA for aluminium & copper busbar.
How o select the electrical fuse?.What are its characteristics.How to select the material od fuse?
How can we measure earthing resistance test (Earth meggar) of Transformer neutral pit while in live condition?.
What is the practical way to calculate the cable size for known ampere load?
Following test should be conducted to find out relative polarity of transformenr terminals A no load test B back to back test C phasing out test D none of above
What is phenomenon of electromagnetic induction and how it works?
What is the effect of interchanging core(made of steel) and winding(made of copper) material in case of transformer? Give proper explanation in regard to different losses in transformer.
how we calculate the withstansing current capacity of wires&cables?
Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?
Why only sinusoidal ac voltages are generated?why not triangular or sawtooth?
Can we use 230VAC, 63A MCB for 120VAC, 63A supplied heaters load?
