EXAMPLE: Given a bridge rectifier has an AC source V=100V at 50Hz, and R-L load with R=10ohm, L=10mH a) determine the average current in the load b) determine the power absorbed by the load
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- You find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors with a 480-VAC rating. However, you find two capacitors rated at 50 F and 370 VAC. Can these two capacitors be connected in such a manner that they can replace the defective capacitor? If yes, explain how they are connected and why the capacitors will not be damaged by the lower voltage rating. If no, explain why they cannot be used without damaging the capacitor.An RC series circuit is connected to a 120-V, 60-Hz power source. The resistor is 25 and has a voltage drop of 65 volts. What is the capacitance of the capacitor?A three phase full wave rectifier is shown below. The input phase voltage peak is Vm=311.128 V. The load is purely resistive of value 52. The DC and RMS output voltages are respectively equal to: Secondary 太D太D,太D, 太D。太De太D, b. Select one: O a. 180V, 240.2V O b. 514.6V, 515.04V O c. 180V, 197.2V O d. 220V, 249.2V
- YEN A docs google.com/presentalionvu/109aRdVPOGDKPIlowJ800-G gwlgdTPyTSE OLaSFDGy/edit A Classes Aplitude Questiors. O www.tce.edu I IVIVA a AMAZON E FUPKART SkiRack.com How to pass a 2D a. G operi ended behavi. E Rectifying Diodes. * NASSCOM FutureS.. I VIRTUAL ELECTRON. 白 Q1 For the op-amp circuit shown below V is approximately equal to 10 V 105 0 95 2 1 ΜΩ 100 kN 上 100 k2 95 2 105 N 1 M2Sample Problem. Determine the output waveform for the network below and calculate the output dc level and the required PIV of each diode. Assume supply of 100Vac,D2 and D3 are germanium diode, D1 and D4 are silicon diode and 1:2 center-tapped transformer. 120Hz www 1kThe current through the diode in the circuit given in the Figure below when Vy = 0.7 V is? ww 8092 12V Select one a. 24.26 mA b. 13.09 mA c. 58.23 mA d. 40.13 mA 40-52 ww 3092 ID
- 8. Liquids with solid impurities a) Have higher dielectrie strength b) Of large size have higher dielectric strength c) Have lower dielectric strength as compared to pure liquids d) None of the above 9. Peak to peak ripple is defined as a) the difference between average de voltage and peak value b) the difference between maximum and minimum de voltage c) the difference between maximum ac and average dc voltages d) the difference between ac (rms) and average de voltages 10. In a Cockroft-Walton circuit, input voltage 100 kV load current 25 mA, supply frequency 100 Hz, each capacitor 10 nF. The optimum no. of stages for maximum output voltage is a) 1 b) 2 c) 10 d) 351. 1-5 K 30v a. what is tue T CTime constant) ? b. How long will it take for the capacutor TO rtach s0% op charge? C. What is tne voltage of capa citor apter 1 seconds? d. How many tíme constants will it take for the soltage to reach 23 v? C. Gweng that the capacitor is fully changed, how will it take por it to be 20% ? long 120v + BF what is the. T ? b. what is the voltage capacitor apter 10 sec? a. C. How many time constants will it take for Tue Vo Itage to reach 80 v.? d. Given that the capaator is Fully charged, how time constants will it be to reau many GOV!t n. Determine the output waveform for the network below and calculate the output dc level and the required PIV of each diode. Assume supply of 100Vac,D2 and D3 are germanium diode, D1 and D4 are silicon diode and 1:2 center-tapped transformer. 120Hz www 1k
- 8. Liquids with solid impurities a) Have higher dielectric strength b) Of large size have higher dielectric strength c) Have lower dielectric strength as compared to pure liquids d) None of the above 9. Peak to peak ripple is defined as a) the difference between average de voltage and peak value b) the difference between maximum and minimum de voltage c) the difference between maximum ac and average de voltages d) the difference between ac (rms) and average de voltages 10. In a Cockroft-Walton circuit, input voltage 100 kV load current 25 mA, supply frequency 100 Hz, each capacitor 10 nF. The optimum no. of stages for maximum output voltage is a) 1 b) 2 c) 10 d) 350.5) A full-wave rectifier with L-C filter is shown in figure 3. If the resistance of the load is 2002, detemine the ripple factor. 100mH 52 Vs 470 µF RL Vs = v2 5 Sin 314t %3DQ5) The schematic circuit in PLECS for a single-phase rectifier is shown below, Q5) The schematic circuit in PLECS for a single-phase rectifier is shown below, Thyristor Crout Probe Pulse Generator VC, pulses Probe Scope Thy Orso v Joad O R: 1 The output voltage across R is depicted in 0.5 0.0- b) 0.2 0.0 d)