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The capacity of the transformer is 20/25 MVA, Ratio is 132/11 KV, Vactor group YNyno. and impedance is 10.07%. As per the calculation the secondary current is 1312.2Amps. The maximum fault current the transformer should sustain is 13.030KA. How many times the transformer should sustain the maximum short circuit current of 13.030KA over a period up 1 Year. The transformer is repaired one & 10 Years old.
1 9436Why in Digital Megger for finding Insulation resistance,-ve is applied to core or conductor and +ve is applied to ground.
ACC,
1 3916During Millivolt drop test current leads are applied in the extreme ends and voltage leads are given just before the current leads.. what will be the difference if voltage leads are given in the extreme ends? and why?
1 6733
Drum level tx with GP4 with zero elevation:7300mmh20 on HP and 8050mmh2o on LP as range but on commissioning the tx readiing is max,Why this reading?
What do you mean by tolerance factor of concrete ?
What happen if we apply square wave or traiangular waveform voltage to the transformer primary winding instead of sinusoidal wave?
How much calorific value of heat is needed to heat 00c of
What is boolean algebra?
how to calibrate steam control valve in steam turbine
why electronic instruments is more favorable than electrical?
why do motors burn out? I understand why adding parallel loads to a power source means more current moves through the circuit, and can destroy circuit elements by overheating. What about when you have a vaccuum cleaner intake flush against a floor, a room fan sitting directly against a wall, or a power drill trying to drill through something too hard?
Explain the method adopted to minimize shell side pressure drop in a shell?
in 2 way slab can additional compressive reinforcement can be provided if yes than in which conditions it is required ?
I have an instrument that involves an electronic circuit. In circuit there is a PTC B754 (having operating voltage 230V). PTC is already damaged and same PTC is not available in market. Now what can i do to solve that problem.
What are the different construction techniques in electronics?
what is the maximim current drawn by 1 phase and three phase welding machine
Explain PID, ON/OFF, Controls
I am a mechanical student.And have cleared the written for NTPC. Please suggest what and how to prepare for the interview.i have got only 2-3 weeks in hand.
