assign2 - Vrms and 50 Hz 120 V ~ 50 mH 100 mH 100 Ω 10...

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University of Saskatchewan Department of Electrical Engineering EE 212 Assignment #2 Instructor: R. Gander _____________________________________________________________________________ 1. An ac voltage of 120 Vrms at 60 Hz frequency is applied to the circuit shown in Figure 1. Figure 1 i. Calculate the current drawn from the source. ii. Determine the value of the capacitor required across points A and B in order to correct the power factor to unity. iii. With the power factor corrected to unity, what is the current drawn from the source? iv. With the power factor corrected to unity, determine the total real and reactive power supplied by the source. v. What will the power factor be if the corrected circuit is connected to an ac voltage source of 220
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Unformatted text preview: Vrms and 50 Hz? 120 V ~ 50 mH 100 mH 100 Ω 10 Ω +-A B 2. The RMS voltage is 120 volts for the AC source V s in Figure 2. Figure 2 a) Find the resonant frequency (in Hertz) of the circuit in Figure 2. b) Calculate the current through the inductor and the total current drawn from the source at resonant frequency. c) Draw a phasor diagram of the voltage and currents in the circuit elements at resonant frequency. 3. A 50-kVA transformer supplies a 20-kW heating load at unity power factor. How much additional power of inductive load at 0.8 power factor can the transformer carry? V s +-10 mH 10 Ω 1000 μ F...
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This note was uploaded on 09/25/2010 for the course EE 212 taught by Professor Gander during the Spring '10 term at University of Saskatchewan- Management Area.

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assign2 - Vrms and 50 Hz 120 V ~ 50 mH 100 mH 100 Ω 10...

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