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ETEE 1223 Homework 15: Ideal Transformers 4a. For the iron-core (k=1) transformer below, find the magnitude of the induced voltage Es. 6. Find the applied voltage of an iron-core transformer if the secondary voltage is 240V, and Np=60 with Ns=720. 8. For the iron-core transformer below: a. Find the magnitude of the current IL and the voltage VL if a = 1/5, Ip = 2A, and ZL= 2 ohm resistor. b. Find the input resistance for the data specified in part (a). 9. Find the input impedance for the iron-core transformer in the above picture if a = 2, Ip = 4A, and Vg= 1600V. 10. Find the voltage Vg and the current Ip if the input impedance of the iron-core transformer in the above picture is 4 ohms, and VL = 1200V and a = 1/4. 11. If VL = 240V, ZL= 20 ohm resistor, Ip =0.05A, and Ns=50, find the number of turns in the primary circuit of the transformer illustrated in the above picture. 12. For an iron-core transformer: a. If Np=400, Ns=1200, and Vg =100V, find the magnitude of Ip if ZL = 9+j12 ohms. b. Find the magnitude of the voltage VL and the current IL for the conditions of part (a). 13. For the circuit below: a. Find the turns ratio required to deliver maximum power to the speaker. b. Find the maximum power delivered to the speaker.