Question { 2405 }
What is the electrical difference between Earthing Switch (ES)
and Maintenance Earthing Switch (MES)?
Answer
Is This Answer Correct ? | 0 Yes | 0 No |
Dear sir,
I am working in wind mill division , pls explain
Pls explain in details with formula
My question is
Wind speed 3.5 M/s Gen RPM
is 1500 ( 25 K/w Production )
Wind speed 12 M/s Gen RPM
is 1500 ( 220 K/w Production )
Why in 3.5 m/s generation was low , why in 12 m/s
generation was high ,
Pls dont explain wind force or wind density , that one
already i know
For the above question RPM was same why the KW was
different
Answer : 1. Its depends on the density ( Force ) of the air
Sir ,
Pls explain wit Formula sir
Answer
Is This Answer Correct ? | 1 Yes | 2 No |
Question { 4419 }
what is the use of providing earthing for tanks? i know for
lightning we use earthing ? Here one of my ONGC project
there is no need of lightning protection and there is no
power connection near by tank in that situation also ONGC
asking earthing for tanks but we didn't understanding why
they asking earthing? is anybody tell exact answer?
Answer
Is This Answer Correct ? | 5 Yes | 0 No |
Question { 4793 }
what is the basic differnce between ground and earth
Answer
Is This Answer Correct ? | 0 Yes | 0 No |
Question { 4626 }
why two contacts(in series) are using in closing circuit
Answer
Is This Answer Correct ? | 0 Yes | 0 No |
Question { 4508 }
How to find earthfault location in long cable layed
underground or outside.
Answer
Is This Answer Correct ? | 2 Yes | 1 No |
Question { 2303 }
In single core cable, Why non-magnetic material is used??
Answer
Is This Answer Correct ? | 0 Yes | 0 No |
Question { 14042 }
in 11kv/400v transformer when only one phase of 11kv supply
fails what happens to sec voltage and why
Answer
Is This Answer Correct ? | 5 Yes | 4 No |
In a 3 phase induction motor(without connecting supply) if we
rotate its rotor by hand and check resistance of stator
winding at motor terminal box its resistance varies why ??
Answer
Is This Answer Correct ? | 10 Yes | 5 No |
Question { 3727 }
How turns ratio test is done in three phase transformers?
Answer
Is This Answer Correct ? | 1 Yes | 0 No |
Question { 8497 }
what is CT saturate?and which effect on CT after its saturate?
Answer
Is This Answer Correct ? | 1 Yes | 0 No |