A single phase half controlled thyristor rectifier deliv- ers a constant load current of 10A at firing angle delay 30°, Average and RMS values of source current are respectively (A) SA, 10A (C) 5A, 9.13A (B) 0A, 9.13A (D) 0A, 10A
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- Estimate the maximum surge current in a half wave rectifier with a transformer having an rms secondary voltage of 50 V and a secondary resistance of 0.25 Ω. Assume the filter capacitance is 0.5 F and a frequency of 60 Hz.A three phase fullwave controlled rectifier has an input voltage which is 480vrmsat 60hz. the load modelled as a series resistance and inductance with R=10ohm and l=50mH. determine the delay angle to produce an average of 50ain the load.A fully controlled, single-phase bridge rectifier is powered from an ideal 220V, 50Hz source. The rectifier is triggered with a trigger angle of 60 degrees and provides a smooth current of 50A to the load at the output. According to this: a) Draw the waveform of the output voltage in scale and calculate the average value of the output voltage. Combine the average voltage signal with the output voltage wave signal. Show on the same figure. b) Draw the waveforms of the thyristor currents, the gap diode current and the current drawn from the source in scale. c) Calculate the value of the filter inductance used at the output when the ripple in the load current is 3A. (Do the operations by showing the output voltage shapes and areas on the figure. The answers should be in the system and order in the solved examples.)
- Single phase half sinusoidal wave controlled rectifier with (? = 30?) pure resistive load (Vs =220 v. f=60 Hz, R=10Ω) Determine the average output voltage Vo Determine the r.m.s value of the output voltageCompute the V2(peak) Half of 2nd windings , Vout(peak) , Vout(DC) , fout in the center tapped rectifier circuit below: fout fout Vout(peak) Vout(DC) foutThree Phase Full-Wave Fully Controlled Rectifier when highly Inductive load is connected: i. Draw graphs when α = 30, 60, 90, 120, 150 degrees. ii. Derive the output average voltage. iii. Derive the output rms voltage.
- the three phase half wave uncontrolled rectifier is operated from 500v,50Hz supply at secondary side and the load resistance is 25 ohms. if the source inductance is negligible, determine a) rectification efficiency b) form factor c) ripple factor d) transformer utilization factor e) peak inverse voltage of each diodeA fully controlled three-phase rectifier bridge circuit supplies a dc load of 300V,60A, from 415V 3-phase ac supply via delta-star transformer. (i) Determine the required thyristor and transformer specifications. (ii) Draw the load and thyristor voltages when firing angle alpha = 60°. (ii) If a commutating diode is placed across the load, determine the FWD specification and then calculate the average load voltage and FWD average current when firing angle alpha = 45°In the full-wave rectifier circuit of figure , the transformer has a turns ratio of 1:2. The transformer primary winding is connected across an AC source of 230V (rms), 50 Hz. The load resistor is 50ohms. For this circuit, determine the peak-to-peak ripple in the output voltage