Interested to Buy Any Domain ? << Click Here >> for more details...
How many losses in generators?
how we can reduce them?
and also in motors,transformers?
- 1 Answers
- 2811 Views
- I also Faced
- E-Mail Answers
Answer Posted / varun devulapalli
for any machine whether it may be rotating or stationary, the common losses are the iron losses and the copper losses. But in additional for the rotating machines there are mechanical losses. Iron losses comprise of two losses i.e., hysterisis loss and eddy current loss. Hysterisis loss depends on the type of the material used and its B-H curve. Eddy current loss is due to the induction of eddy currents in the armature material. these eddy currents are not useful but they create heat in the machine. so to reduce eddy current losses we use thin laminations in the core with a very thin insulation like paper in between each lamination.
Copper losses are divided into field copper loss and the armature loss. copper losses are the ohmic losses which arrive due to the resistance in the winding. square of the current multiplied by the resistance gives the copper losses.
Mechanical losses comprise of frictional and windage losses. frictional losses arive due to the ageing of the bearings. windage losses are due to the wind that oppose the rotation of the machine in a direction.
less losses leads to maximum efficiency.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
How RTCC panel is working and give single line diagram for RTCC with transformer?
what is the meaning of vcc
explain why core loss of a transformer is almost constant under different load conditions when connected across a constant voltage and constant frequency.
what size steel armoured cable is required to support 1500kva capacity. would 70mm squared be enough or would I need 90 or 120mm squared 3c plus earth
diff b/w normal grounding and resistance grounding
What is the difference between solid grounding and impedance grounding?
what is d check in dg 1500kva
1.ZEBRA conductor(large size) 2.KUNDHA conductor( small size ) 3.panther conductor(very small ) 4.lepard conductor (very very small)
Why we make earth connection with Transformer Body and What will be the minimum size of copper wire as per code with respect to KVA rating of Transformer?
why impedance relay is used for medium transmission line protection
What will be the diameter of pipe between conservation tank and transformer
how is the incoming cable size calculated for a given current rating of a panel??
what will be d.g. capacity to cater together for 14hp A.C. load & 3kw lighting load
explain the process of commutation in a dc machine. Explain what are inter-poles and why they are required in a dc machine.
Pl.brief me any electrical major fault you have rectified.
