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A 400kVA transformer has a primary winding resistance of 0.5Ω and a secondary winding resistance of 0.001Ω .
The iron loss is 2.5kW and the primary and secondary voltages are 5kV and 320V respectively. If the power factor of the load is 0.85,
Determine the efficiency of the transformer
(a) on full load, and
(b) on half load
Q. State the law of conservation of electric charges? The entirety charge in an isolated system always remains constant. For instance Uranium ( 92 U 238 ) can decay by emittin
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i am class 12 student given an assignment on ''to study the truth operation performed by OR GATE.'' please help me with the assignment
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A bottle and marble Pour some sand into a wide mouthed bottle. Place a piece of cardboard about 5 cm square over the mouth of the bottle. Set the marble on the cardboard and th
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