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- What impedance vector (0- j15) Ohms represents:A. A pure resistance. C. A pure capacitance.B. A pure inductance. D. An inductance combined with a capacitance.A sinusoidal 50 Hz voltage of 200 V (rms) supplies the following three circuits which are inparallel: (a) a coil of inductance 0.03 H and resistance of 3 ohms, (b) a capacitor of 400 microFaradin series with a resistance of 100 ohms and (c) a coil of inductance 0.02 H and resistance 7 ohms inseries with a 300 microFarad capacitor. Find the total current supplied?A 20ohms resistor is connected in series with an inductor, a capacitor and an ammeter across a 25V variable frequency supply. When the frequency is 400Hz the current is at the maximum value of 0.5A and the p.d. across the capacitor is 150V. Calculate the capacitance of the capacitor and the resistance and inductance of the inductor.
- A sinusoidal 50 Hz voltage of 200 V (rms) supplies the following three circuits which are in parallel: (a) a coil of inductance 0.03 H and resistance of 3 ohms, (b) a capacitor of 400 microFarad in series witha resistance of 100 ohms and (c) a coil of inductance 0.02 H and resistance 7 ohms in series with a 300 microFarad capacitor. Find the total current supplied?When the average real power absorbed by an impedance is zero, then the impedance is: Select one: a. A parallel combination of resistors and capacitors b. An ideal resistor c. A pure inductor d. A resistor in parallel to an inductor e. A resistor in parallel to a capacitorAn inductor, a capacitor, and a resistor are connected in parallel with a function generator. The inductor draws 100mA RMS, the capacitor draws 150mA RMS, and the resistor draws 200mA RMS. Find the magnitude of the total current.
- Given the following find: The reactive power dissipated by the source is (in Vars) The apparent power dissipated by the source is (in VA)A current of 20sin(200t - 30°) A flows into the parallel combination of a 100-ohm resistor and a 25-microfarad capacitor. Find the capacitor current wave equation.C1 L1 R1 V1 Vout V1 contains the fundamental and its harmonics (fo, 2fo, 3fo, ...). The amplitude of the harmonics is inversely proportional to the harmonic number. V(fo) = 10 mV V(2fo) = 10mv/2 = 5 mV V(3fo) = 10mv/3 = 3.33 mV V(4fo) = 10mv/4 = 2.55 mV a) What is the minimum value of Q for the circuit that will attenuate the third harmonic (3fo) in Vout to be less than 1% of the fundamental? b) What is the amplitude of the fifth harmonic (5fo) as a percentage of the fundamental?
- An electrical circuit with a sinusoidal voltage source, a resistor, and a capacitor all connected in series. The voltage across the capacitor: Select one: a. Leads the current in the capacitor by exactly 90o b. Is in phase with the sinusoidal voltage source c. Is in phase with the voltage across the resistor d. Leads the current in the circuit by 90o e. Lags the current in the circuit by 90oA chopper circuit has an inductive load of 2ohm resistance and 10mH inductance. If the source voltage is 20 V and the frequency of the chopper is set to 100Hz and the on-time to 5 ms. Determine the average voltage and current, maximum and minimum load currents.For a series RLC circuit with a sinusoidal input voltage, the amplitude of the current passing through the circuit (I, in mA) is plotted as a function of frequency for two cases: Curve 1 with R1, L1. and Curve 2 with R2. L2 as shown in the next figure. The value of the capacitor used in the circuits is C=0.01 micro Farads. If the value of R2 =1600 Ohm then the input voltage (in volts) is: 7.5 25 110 Frequency H2 O a. 4 O b. 16 sin(9888 t) O c. 8 O d. 8 cos(6.28 f t) O e. 8 sin (6.28 R t)