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Answer Posted / faisal asghar
in trasformer we use vegitabel oil .
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Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha
what is the maximum permissible limit value of leakage current and leakage counter reading to replace lightining arrester?
What is the difference between line drop and percentage line drop?
plz send me the syllabus or any sample paper for engineer trainee recruitment if any,on ravinder911@yahoo.com
what do w do when the output of generator is fluctuating?
PIU how does work?
how to calculate slip ring induction motor stator and rotor currents??
what is the pulse and audio frequency transformer? what is different between induction regulators and tap changing transformer?
block diagram of 2 ups system connected in hot stand by mode?
what is the IEC standard for Power Cable installation in onshore (like in direct buried ground or above groung)
apti mainly on logical reasoning, verbal and non-verbal ability (70 percent) and remaining technical. I was in ee but technical had mech ques like on turbines and welding.
What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.
How will you define capacitance?
what is the difference b/w pvc cu conductor and cu breaded wire..?
How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?
