what is excitation/

2284

If symmetrical fault occurs at the terminal of a synchronous motor then how the motor will act...explain it..

2211

Either It Possible a dc Motor to Run On Ac Drive [ Ex : ACS 800 , Yaskawa F7 ] If it is Possible How Pls Inform Me dinesh_elect_eng@yahoo.com

2050

If an electrical component has a positive temperature coefficient, how come such components have high power losses due to heat if current decreases when resistance increases? assuming power given by I^2*R whereby the Resistance is infinite.

1127

What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side

1516

What should be the voltage between Neutral and Ground in secondary side of the step down transformer (230 V to 110 V) with no load condition?

2107

brief notes on ammeters

2099

how we can find of current direction(supply comming/out going direction) when a transmission line passing through sides.

2448

How PADO software increase the efficiency of power plant?

6555

what is sustainable current of any conductors . a bare busbar or pvc cable has different sustainable current .

1833

Hi guys! Plz help me to answer the following questions. 1. What are the types of transmission line energy losses? 2. Why are the VLF are used some types of services? 3. What frequencies are used for reliable beyond the horizon terrestrial communication without repeaters? 4. To permit selection of 1 out 16 equi-probable, what is the number of bitis required? 5. What is the most common modulation used for telegraphy? 6. What is the multiplexing is used to increase the capacity of the optic fiber? Thanks

2148

Difference between earthing & grounding.?

2244

What is the difference between diesel generator engine with and without turbo charger with the same capacity?

1746

l&t switch FN 63 handle position can we change

2610

i have attended the interview on 4th June,08 at Kolkata in IOCL, can anybody tell me what is its result

2034