Interested to Buy Any Domain ? << Click Here >> for more details...
In HT overhead line why should provide top conducter which
is not connected whith insulater..?
- 3 Answers
- 6552 Views
- Essar, I also Faced
- E-Mail Answers
Answer Posted / ajit
It is generally used to protect the conductor from direct
stroke of lightening
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I - is the value of AC fault current. t - is the operating time of disconnecting device in seconds. K – is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.
Explain the process of commutation in a dc machine.
What is the lower limit of break-down voltage of converter transformer.
Write down the brushes of a de machine.
How the capacitance og capacitor volatage transformer is decided?
hi friends this is a newcomer in your community of enthusiastic peoples. i am preparing for SSC (CPWD JUNIOE ENGG EXAM FOR ELECTRICAL) pls guide me on the same how to crack it? PLS LET ME KNOW IS ANYONE THERE WHO PASED IT? CAN I GET THE QUESTION PAPERS OF PREVIOUS EXAMINATIONS?
What types of question are done for diploma students in aptitude test
what the function breaker failure scheme, how is it operated
A 11KV, 1200 A breaker combination fixed in a cubicle for HT motor.Is normally for 11 KV motor fuse is using? if Yes, What range fuse is required?
whats the existence of reactive power and when it arises?
What is the difference between the relay and the circuit breaker?
what is method for testing CT
What is an order of a system.
can any one tell in easy method for circulating current ??
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
