A power transformer 4MVA/11KV/0.415Kv has been out of use in 12years. what maintenance actions/test need to be carried out before energizing.
906In a Impedance Based Distance Relay (Quad Characteristics) - Could there be two different Line Angle(RCA) for Ph-Ph & Ph-Gnd? If So Kindly Let me Know.. Where, What are the advantages of the same?
955can we choose current transformer secondary, to calculate residual flux in a power transformer, so as its saturation is close to the saturation level of power transformer?
879What will be the current drawn by HT motor, if low voltage is applied.. any formula to calculate the LT amps of HT motor.?
993Why Water motor is not taking a load or pressure while everything is correct. (Note: Motor running properly)
954Post New Electrical Engineering Questions
Why the field rheostat is adjusted such that the voltmeter reads 380V
How DC earth leakage currents can be reduced ?
why do we need to use 3c+3e cable, normally i select only 3c+e cable and i think it is enough. pls explain the usefull of 3e cable ( in this project the earthing system is well done)
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
700KW 6.6KV slip ring induction motor to use VFD to control the speed
what is a types of short circuit and what is a types of distance protection tests
how works inductive &capacitive sensors?
how to calculate the surge level of surge suppressors related to the SF6 cicuit breakers?
how to calculate singlephase motor efficiency?
is this the formula of building wiring to get the main breaker.Watts/volts*.8%+higher motor*(25%)=ampere. yes or no or send the correct formula for building wiring.
what will happen if the prime mover on the field excitation of the on-coming generator fails?Explain.
TO CALCULATE THE RESISTANCE OF GRR OF HT MOTOR 400KW WHEREAS STATOR VOLTAGE 6.6KV AND ROTOR VOLTAGE 705V AND ROTOR CURRENT IS 346A.
what is the calculation formula for motor starting torque,running torque, running torque.
why do we use 25kv supply for traction purpose?
How do we calculate the Out put voltage of generator, after the excitation is being given?
