how the vaccum ckt breaker workes..? how the arc is
quenching in it?
Answer Posted / k.prakashchandra
The arc is quickly quenched as the metallic
vapours,electrons and ions produced during arc, rapidly
condense on the surface of the breaker contacts due to
fast rate of recovery of dielectric strength in vacuum.
Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?
In constant power region of 3-phase IM torque-speed characteristics, if frequency increases slip A does not alter B decreases C increases D none of above
Name the test signals used in control system
working principle of oil startar
What are the two basic types of transformers?
What is meant by reverse polarity and how it can be fixed?
In MEP Services what are parts of STP and what are there function?
what is the size of ht cable of 33kv ht line and transformers ratings are 1 Mva and 5mva.please send formula also.
This is urgent!! What is a Thyristor-based 3-ways selector switch with Zero crossing control? how does it operate and where is it mostly found in a system?
how to generator maintenance (A Check, B check,Etc)
How does the slip regulator works as a startor
in star-delta tranformer,if the input of star connection is 400/7v 3 kva then what is the output of delta connection?
what will happen if synchronous machine rotor fed from single phase ac supply
I need model question papers for RRB section engineer Chennai... Please send to my E-mail Id:- maitheerainbow@gmail.com
In a flange coupling, the flange bolts are designed for