3. A single-phase transformer rated 1.2 kV/120 V, 7.2 kVA has the following winding parameters: R = 0.8 2, X, = 1.2 2, R2 = 0.01 2, and X2 = 0.01 2. Determine the voltage regulation of the transformer when it is delivering rated load at 0.8 pf lagging. A. 1.38% eoso0.8 B. 2.89% %3D C. 3.74% u sin o 0.6/ED. 4.08%

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Q: 1. Determine C for the system represented by |R2 R R1 G2 R

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Q: G3 61 62 G4 65 (J. 501 RIS 52 2.

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A: The solution can be achieved as follows.

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A: To find current I1 I2 and I3

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A: The above question is based on the transient analysis of RC circuit.

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A: Given data: R1=10×1.2=12 kΩR2=10×1.2=12 kΩR3=5×1.2=6 kΩR4=5×1.2=6 kΩC1=6 μFC2=12 μFε1=60 Vε2=10 Vτ=5

Q: Voltage Drop across R1

A: It is given that:

KVL and KCL

KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.

Sign Convention

Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.