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HPHY 253 Homework 33b Alternating-Current Circuits Dr. A. E. Bak Name 33 : 21 . A RLC circuit consists of a 150 - resistor, a 21 : 0 - capacitor, and a 460 - mH inductor connected in series with a 120 V , 60 : 0 - Hz power supply. (a) What is the phase angle between the current and the applied voltage? (b) Which reaches its maximum earlier: the current or the voltage? 33 : 24 . An AC source with ± V max = 150 V and f = 50 : 0 Hz is connected between points a and d in Figure P 33 : 24 . (a) Calculate the maximum voltage between points a and b . (b) Calculate the maximum voltage between points b and c . (c) Calculate the maximum voltage between points c and d . (d) Calculate the maximum voltage between points b and d . 33 : 46 . Consider the ±lter circuit shown in Active Figure 33 : 23 a . (a) Show that ± V max out ± V max in = 1 = ( !C ) q R 2 + 1 !C ± 2 is the gain ratio, that is, the ratio of output to input voltage amplitudes. (b) What value does the gain ratio approach as the frequency decreases toward zero? What value
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This note was uploaded on 05/01/2011 for the course HPHY 253 taught by Professor Bak during the Spring '09 term at Morehouse.
- Spring '09