X=1 Y=6
Posted: Tue Jun 07, 2022 12:28 pm
X=1
Y=6
Q3. [20 marks] A (28-X) kVA, 3000/150 V, 50 Hz, step-down transformer has the following resistance and leakage- reactance values: R₁ = (4 + 0.X) 2, R₂ = 0,04 2, X₁ = 122, and X₂ = 0.1X2 The transformer is operating at (80-X) % of its rated load. If the power factor of the load is 0.8Y leading, determine: (i) The induced emf in the secondary winding (4 marks) (ii) The input power (4 marks) (iii) The voltage regulation (4 marks) (iv) The efficiency of the transformer (4 marks) (v) Sketch the phasor diagram (4 marks)
Y=6
- X 1 Y 6 1 (29.53 KiB) Viewed 42 times