CHAPTER 31 HOMEWORK
1. (p.784 Ex.8) (a) What is the impedance of a well-insulated 0.036-mF capacity connected to a 22-kV (rms), 600-Hz line? (b) What will be the peak value of the current and its frequency?
2. (p.784 Ex.17) A 35-mH inductor with 2.0-W resistance is connected in series to a 20mF capacity and a 60-Hz, 45-V source. Calculate (a) the rms current, (b) the phase angle, and (c) the power dissipated in this circuit.
3. (p.784 Ex.28) (a) A resonant circuit using a 220-mF capacitor is to resonate at 18.0kHz. The air-core inductor is to be a solenoid with closely packed coils made from 12.0m of insulated wire 1.1mm in diameter. How many loops will the inductor contain?
4. (p.785 Ex.45) A voltage V = 0.95sin754t is applied to an LRC circuit (I is in amperes, t is in seconds and the "angle" is in radians) which has L = 22.0mH, R = 23.2kW, and C = 0.30mf. (a) What is the impedance and phase angle? (b) How much power is dissipated in the circuit? (c) What is the rms current and voltage across each element?