1) 74.5 mH 3292 I = 9.5A 50Hz C1 265 µF For the above circuit calculate: a) The impedance of the circuit. b) The voltage across the complete circuit. c) The voltage across each reactive component.
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- The voltage applied to the metal grid of CRO is negative with respect to cathode. Select one: O True O False The sinusoidal current waveform having the maximum value of 30 A. then the R.M.S value is Three coils each having resistance of 29 0 are connected in star across 436 V. 50 Hz supply. Then the total power consumed is O 19665.10 W O 3784.66 W O 755.20 W O 226.05 W5) Find the reactance the inductance and impedance of the circuit. Calculate the current of this circuit and the sketch waveform of current and voltage. V1 10 V 60 Hz R1 m 100kQ 12 Vrms 1000 Hz 0° 6) Find the reactance the inductance and impedance of the circuit. Calculate the currents of this circuit R www 502 L L1 106mH eee 10 mHThe voltage applied to the metal grid of CRO is negative with respect to cathode. Select one: O True O False The sinusoidal current waveform having the maximum value of 30 A then the R.M.S value is Three coils each having resistance of 29 n are connected in star across 436 V, 50 Hz supply. Then the total power consumed is O 19665.10 W O 3784.66 W O 755.20 W O 226.05 W
- 2. Refer to the Figure 2. a) Determine the total impedance of the circuit in polar form. b) Determine the voltage v(t) and current i(t) sinusoidal forms. Sketch one cycle of the waveforms in the same x-axis. Clearly indicating the peak value and the period of each waveform and the phase difference (in milliseconds) between the two waveforms. c) Determine the values of resistance R and inductance L. d) Determine the phasors V,, VR and Vc. e) Sketch the phasor diagram showing Vs, Vr, Vr, Vc and I.b) A capacitor C is connected in series with a 40 O resistor across a supply of frequency 60 Hz. A current of 3A flows and the circuit impedance is 50 N, Calculate: (i) the value of capacitance, C, (ii) the supply voltage, (ii) the phase angle between the supply voltage and current, (iv) the p.d. across the resistor, (v) the p.d. across the capacitor.A utility company plans to connect a total of 20uF of capacitance to a 7200 volt line. To make this connection four capacitors will be connected in series. What is the capacitance of each capacitor? Answer is 80uF. Now what is the minimum AC voltage rating of each capacitor?
- Quistion.4. a) A sinusoidal voltage is applied to the resistive circuit in figure.Q.4. a. Determine the following: i. Ims ii. Iavg iii. Ip iv. Ipp 10V 1.0 ΚΩ Figure.Q.4.aAn rms voltage of 22.2 V with a frequencyof 1.00 kHz is applied to a 0.290-mH inductor. (a) What is the rmscurrent in this circuit? (b) By what factor does the current changeif the frequency of the voltage is doubled? (c) Calculate the current for a frequency of 2.00 kHz1.Enumerate five formulas for four series connected capacitances across Vt source and draw the circuit. 1. Enumerate five formulas for four parallel connected capacitances across Vt source and draw the circuit.
- A 240 volt 60 Hz voltage source is connected to an RLC parallel circuit, the true power is 260 watts. The inductor has a reactive power of 760 VARs, and the capacitor has a reactive power of 360 VARs. a. Find the power factor for this circuit. b. Calculate the capacitance of the capacitor.2, In a circuit, the capacitance of a capacitor is 3.2 microfarads and the rms voltage of the generator is 50 volts. Frequency (a) 100 Hz and (b) what is the rms current in the circuit when it is 1000 Hz?QUESTION 3 An 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. O 450mA RMS O 544mA RMS O 352mA RMS O 206mA RMS