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- Your aunt living in the USA sent an appliance that has impedance equal to 10 + j3 2 at 60 Hz. She instructed you to purchase a 220 V to 110 V transformer to step down the voltage since the appliance is rated 110 V. The cord that you used to connect the 220 V side of the transformer to the convenience outlet has a total impedance of 1 + j0.5 Q. You measured the voltage at the outlet and the value is 220 Vrms. The equivalent circuit is shown below: 1 Ω m T 220 V rms 10+ j3 V Ω 220 V : 110 V Solve for the voltage across the appliance and the current through it by either A. Referring the appliance to the transformer primary, OR B. Referring the source and cord impedance to the transformer secondary. Assign the convenience outlet voltage as the reference phasor, i.e. at 0°. Choose only one method above. After choosing, j0.5 Q +Your aunt living in the USA sent an appliance that has impedance equal to 10+ j3 2 at 60 Hz. She instructed you to purchase a 220 V to 110 V transformer to step down the voltage since the appliance is rated 110 V. The cord that you used to connect the 220 V side of the transformer to the convenience outlet has a total impedance of 1 + j0.5 Q. You measured the voltage at the outlet and the value is 220 Vrms. The equivalent circuit is shown below: 1Ω mm ĪT + 10+j3 VL 220 V rms Ω 220 V : 110 V Solve for the voltage across the appliance and the current through it by either A. Referring the appliance to the transformer primary, OR B. Referring the source and cord impedance to the transformer secondary. Assign the convenience outlet voltage as the reference phasor, i.e. at 0°. Choose only one method above. After choosing, 1. Draw the circuit that would solve for V₁ and T. Compute all referred values and label all components. 2. Solve for V and I. j0.5 Q +Your aunt living in the USA sent an appliance that has impedance equal to 10 + j3 2 at 60 Hz. She instructed you to purchase a 220 V to 110 V transformer to step down the voltage since the appliance is rated 110 V. The cord that you used to connect the 220 V side of the transformer to the convenience outlet has a total impedance of 1 + j0.5 Q. You measured the voltage at the outlet and the value is 220 Vrms. The equivalent circuit is shown below: j0.5 Q 19 ww + (N) 220 V rms 10+ j3 VL Ω 220 V : 110 V Solve for the voltage across the appliance and the current through it by either A. Referring the appliance to the transformer primary, OR B. Referring the source and cord impedance to the transformer secondary. Assign the convenience outlet voltage as the reference phasor, i.e. at 0°. Choose only one method above. After choosing, 1. Draw the circuit that would solve for V₁ and T. Compute all referred values and label all components. 2. Solve for V and I.
- Your aunt living in the USA sent an appliance that has impedance equal to 10+ j3 2 at 60 Hz. She instructed you to purchase a 220 V to 110 V transformer to step down the voltage since the appliance is rated 110 V. The cord that you used to connect the 220 V side of the transformer to the convenience outlet has a total impedance of 1 + j0.5 Q. You measured the voltage at the outlet and the value is 220 Vrms. The equivalent circuit is shown below: 1Ω m IL + (N) 220 V rms 10+ j3 VL 22 220 V 110 V Solve for the voltage across the appliance and the current through it by either A. Referring the appliance to the transformer primary, OR B. Referring the source and cord impedance to the transformer secondary. Assign the convenience outlet voltage as the reference phasor, i.e. at 0°. Choose only one method above. After choosing, 1. Draw the circuit that would solve for V₁ and T₁. Compute all referred values and label all components. j0.5 ΩYour aunt living in the USA sent an appliance that has impedance equal to 10 + j3 22 at 60 Hz. She instructed you to purchase a 220 V to 110 V transformer to step down the voltage since the appliance is rated 110 V. The cord that you used to connect the 220 V side of the transformer to the convenience outlet has a total impedance of 1 + j0.5 Q. You measured the voltage at the outlet and the value is 220 Vrms. The equivalent circuit is shown below: j0.5 Q 19 m IL 220 V rms 10+ j3 VL Ω 220 V : 110 V Solve for the voltage across the appliance and the current through it by either A. Referring the appliance to the transformer primary, OR B. Referring the source and cord impedance to the transformer secondary. Assign the convenience outlet voltage as the reference phasor, i.e. at 0°. Choose only one method above. After choosing, 1. Draw the circuit that would solve for V₁ and ₁. Compute all referred values and label all components. 2. Solve for V₁ and T.A transformer is used to step down the voltage from a 230 V outlet so that an appliance rated at 115 V may be used. The appliance is a constant power load, that is, it draws constant power as long as the voltage across it is near 115 V. The transformer has an impedance equal to 0.5 + j0.8 Ω referred to the high-voltage side. The appliance is consuming 1,800 W at 0.88 power factor lag. It was measured that the voltage across the load is 110 V. a.) What is the reactive power drawn by the appliance?b.) The voltage across the appliance is measured to be 110 V rms. Assuming that the appliance voltage is the reference phasor, what is the phasor current through the appliance?c.) What is the impedance of the transformer when referred to the low-voltage side? d.) What is the rms voltage across the supply? e.) What is the real power lost in the transformer?
- A transformer is used to step down the voltage from a 230 V outlet so that an appliance rated at 115 V may be used. The appliance is a constant power load, that is, it draws constant power as long as the voltage across it is near 115 V. The transformer has an impedance equal to 0.5 + j0.80 referred to the high-voltage side. The appliance is consuming 1,800 W at 0.88 power factor lag. It was measured that the voltage across the load is 110 V. What is the rms voltage across the supply? Specify the magnitude only. No need to provide the angle. Provide 2 digits after the decimal point. Answer: What is the real power lost in the transformer? Provide 2 digits after the decimal point. Specify the units. Answer:An ideal 220/110-V transformer carries a (4+j5) ohms load at 110-V side. Underthis condition, calculate the current in the 220-V side.(2) uhai The value of the potential .15 difference Vxy in the circuit shown equal to ...... 22 2V 30 V2 I2 40/t 4V 13.71 mV 12.71 V O 11.71 mV 12.71 mV O 13.71 V O
- generator (b) What is the average power dissipated in R? P=[ W Help Enter 500 v generator voltage -500 v AC Generator 0 Ideal Transformer R = 300 Rg8 time (a) The sinusoidal voltage output from the AC generator oscillates between 500 V and -500 V. The circuit for an ideal transformer is constructed with a generator, transformer and a 30 W resistor. The generator makes 6 loops with the transformer and the resistor makes 11 loops with the transformer (the figure does not show these loops accurately). What is the maximum voltage across the resistor R? V= V Help EnterQ4//a. A 600 KVA one phase transformer when working at unity p.f has an efficiency of 92% at full load and also at half full load. Determine its efficiency when it operates at unity p.f and 60% of full load. b. The voltage in an alternating current circuit at any time t seconds is given by v=60 sin 40 t volts. Find the first time when the voltage is (i)50 v (ii)15 vWhat is the level of the peak voltage at the secondary 1 (Vsecondary 1) and secondary 2 (Vsecondary 2) of the transformer shown below during the negative half cycle of the input voltage? No need to show your solution. Just write your numeric answer on the space provided below. ... Si 220 V 60 Hz ODeg 1.2kn V. 9:1 Si