
Table of Contents
Output Equation
The output equation of transformer in KVA is to be related with its main dimension is called output equation.
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Output Equation of an A.C. Machine
Let,
Q = Output, KVA
ฯm = Main flux, wb
Bm = Maximum flux density
Ai = Net core area
Aw = Net window area
Agi = Gross (iron) core section
D = Distance between core centers
d = Diameter of circumscribing circle
Kw = Window space factor
f = Frequency
Et= Emf per turn
Tp & Ts = Number of primary & secondary turns
Ip & Is = Primary & secondary currents
Vp & Vs = Primary & secondary voltages
ap & as = Primary & secondary conductor section
Li = Mean length of flux path in iron
Lmt = Length of mean turn of transformer winding
Gi = Weight of active part of iron
Gc = Weight of copper
Pi = Specific core losses
Pc = Specific copper losses
Output Equation of Single Phase Transformer



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