why 6.6,11,22,33,66kv? what basis they have considered?5 4331
HOW CIRCUIT BREAKER RATING CALCULATED?WHAT ARE THE PARAMETERS CONSIDERED?5 12405
Wat is da difference b/w neutral earthing and unearthed system?2 3272
what is residual current....1 2053
what happen "when Dyn11 is parallel operation with Dyn1"?9 10976
Earth Resistivity2 3471
on what priciple transformer works on?5 3812
RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV BUT WE KNOW THAT LIGHTENING ARRESTER IS USED FOR OVER VOLTAGE PROTECTION SO WHY NOT THE RATING OF LIGHTENING ARRESTER BE MORE THAN 11KV ???????????????//5 38460
what are the type of motors3 3048
I have cleared IOCL written exam(Electrical). My intv is on 6/9/2008.can anyone guide me & tellme abt intv questions.
how dc ct works?3 4137
what is the difference between inverter and ups & what is the earth resistance for ups , if its high why so3 4337
WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION
Explain cos(theta) and Sin(theta)
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
Single line digram for 11 kV to distribution use go,la and do
define reflection method?
The advantages of Magnetic flux leakage technique over Ultrasonic technique for non distructive testing of material.
what is the difference between OSR and BUCHHOLZ relay of transformer?
Draw a block diagramof Three UPS systems connected in Parallel mode?
How can we findout the maximum efficiancy of Transformer? At which load?
how many safety really of DG sets.
why ten delta testing is carried out on power transformer
How does the slip regulator works as a startor
specify the inbuilt protections in DG
What is Partial Discharge test .Please specify that this test can be test on 11/0.433 KV,630 KVA Transformer.
Brief working principle of stabilizer,application & safety precautions