The core of 1 kVA, 50Hz, 220/110 Volt single-phase transformer is uniform & made of electric sheet steel that has symmetrical hysteresis loop with half area of 48 Joules/m/cycle. The transformer is supplying a load of (60 - 80 j) Ohms at 110 Volts. The dimensions of the transformer & the hysteresis loop of the electric sheet steel are given in the following figure. Hint: Use the approximate equivalent circuit in your calculations. Rp (92) Xp (92) Rs (22) Xs (92) Rc (512) Xm (k92) 10 4 2. 3 12 14 Parameters of the single-phase transformer Mean length = 35 cm 11 e2 Cross-sectional area = 16 cm BE w B. IM is -H Hai HE One Cele -B -BM Single-phase transformer & hysteresis loop of magnetic material due an alternating current Answer the following ten sub-questions for Question 2: a) Calculate the hysteresis losses in Watt. (1-Mark) b) Calculate the eddy current losses in Watt. (1-Mark) c) Calculate the copper losses in Watt. (1-Mark) d) What is the value of secondary current as a percentage of IFull-Load? (1-Mark) e) What is the frequency of the secondary current? (1-Mark) f) What is the power factor (PF) of the load? Is it leading or lagging PF? (1-Mark) g) Calculate the no-load current. (1-Mark) h) Calculate the efficiency of the transformer? (1 Mark) i) If short circuit test is done in the high voltage side of the transformer, what is the value of the measured current? (1-Mark) j) Draw the equivalent circuit of the transformer in open circuit test as it is done in low voltage side (write the values of the parameters and the measured voltage, current & power in open circuit test on your drawing). (1-Mark)