- Task 3 1 Find The Average Power In A Resistance R 10 Ohms If The Current In The Fourier Series Form Is I 12 S 1 (55.34 KiB) Viewed 66 times
... Task 3 1. Find the average power in a resistance R = 10 ohms, if the current in the Fourier- series form is į = 12 sin wt +8 sin 3wt +3 sin 5wt amperes. a. 1085 W b. 1203 W c. 1150 W d. 1027 W 2. A series RL circuit in which R = 5 ohms and L = 20 mH has an applied voltage 100 + 50 sin wt + 25 sin 3wt, with w = 500 radians per sec. Determine the power dissipated in the resistor of the circuit. a. 2510 W b. 2234 W c. 2054 W 2302 W 3. Three sinusoidal generators and a battery are connected in series with a coil whose resistance and inductance are 8 ohms and 26.53 mH, respectively. The frequency and rms voltages of the respective generators are 15 V, 20 Hz; 30 V, 60 Hz and 40 V, 100 Hz. The open circuit of the battery is 6 V. Neglect internal resistance of the battery. Find the apparent power delivered by the circuit. a. 194.4 VA b. 178.5 VA c. 198.3 VA d. 182.7 VA 4. A series circuit containing a 295 µF capacitor and a coil whose resistance and inductance are 3 ohms and 4.42 mH, respectively are supplied by the following series connected generators: 35 V at 60 Hz, 10 V at 180 Hz and 8 V at 240 Hz. Determine the power factor of the circuit. a. 0.486 b. 0.418 c. 0.465 d. 0.437 5. A capacitor of 3.18 microfarads is connected in parallel with a resistance of 2,000 ohms. The combination is further connected in series with an inductance of 795 mH and resistance of 100 ohms across a supply given by e = 400 sin wt + 80 sin (3wt + 60°). Assume w = 314 radians per sec. Determine the circuit power factor. a. 0.702 b. 0.650 c. 0.633 d. 0.612 (Ctrl)