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 53665I have cleared IOCL written exam(Electrical). My intv is on 6/9/2008.can anyone guide me & tellme abt intv questions.
IOCL,
5 9936what is the difference between inverter and ups & what is the earth resistance for ups , if its high why so
3 7619Post New Electrical Engineering Questions
what is the basic construction diffrance between servo motor ans sqiralcage induction motor
Please tell me the formulaes while designing a substation for power Calculations in designing a 33 KV Substation?????
On what cycle does thermal power plant operate?
What is voltage divider rule?
What should be the height of basement according to NBCC code?
How to design the NGR Resistance
If we have to find the inductance of a dc shunt motor then by giving dc supply or ac supply and what is the reason for it. (this example is from "to determine the transfer function of a dc shunt motor ")
What is the actual meaning of thermal power efficiency ?
What is boucholz relay and the significance of it in to the trformer?
hi pal, i am vengatesh from tamilnadu(chidambaram),i have called for the written test for the post of jr executive(ELECTRICAL) of AAI ,I dont know about the question paper pattern,so any kindly help me to face the examination,post me the model question papers and some tips to write my examination to (vengi.annadurai@gmail.com)
7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?
Why 30kw 40 hp 4 pole 3ph induction motor over heated?any steps on reduction in heat?
What is the unit of charge and current?
What is fault clearing time for Current Limiting Moulded Case Circuit Breaker?.
Define resonant peak?