3.21 я A three-phase half-wave controlled rectifier is connected to a star supply and a resistive load R =10 2. If the rectifier is turned-on at a firing angle of 60°, calculate average and rms output voltages and currents. Assume phase supply voltage to be 120 V. [Ans: 70 V, 106.8 V, 7 A, 10.68 A]
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- A single-phase full-wave rectifier is connected to an AC source with a peak voltage of 170 V and a frequency of 60 Hz. The load resistance is 502.For the full wave rectifier circuit shown in Figure 1, calculate: 1) The maximum current through the load. 2) The average current through the load. 3) The average voltage across the load. 4) The rms value of the current. 5) The rectification efficiency. Vms = 280V Vin RL= 12ks2 Vrms = 280V Figure 1A half-wave rectifier is to provide an averagevoltage of 50 V at its output.a. Draw a schematic diagram of the circuit.b. Sketch the output voltage waveshape.c. Determine the peak value of the output voltage. d. Sketch the input voltage waveshape.e. What is the rms voltage at the input?
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- 3-phase half wave controlled rectifier is fed from 3-phase, 250V, 50HZ source and is connected to resistive load taking a constant current of 20A. (a) Draw the waveform of output voltage. (b) Calculate average value of load voltage for a firing angle of 20° (c) average load power.A 60 Hz sinusoidal voltage with an RMS value of 120 V is applied to a single-phase half-wave SCR rectifier. The firing of SCR is delayed by 60 degrees. The DC output voltage of the rectifier would be: O A. 60 V O B. 90 O C. 81 V O D. 40 V O E. None of the other choices are correctA 60 Hz sinusoidal voltage is applied to an SCR full-wave rectifier. If the DC output voltage is 162 V and the firing angle of the SCR is 60 degrees, the peak voltage of the input sinusoidal would be: O A. 197 V O B. 228 V O C. Can't tell; need more information. O D. 340 V O E. None of the other choices are correct