transformer with a turns ratio, a= 2 is use to supply a half-wave diode rectifier with a 50 ohms resistor connected to its output terminals. If the primary input voltage of the transformer has a peak value of 150 V, determine the dc current drawn by the resistor. Assume a non-ideal diode.

A Single-Phase full wave uncontrolled Bridge rectifier is connected to AC supply voltage of 200V. The load is inductive which draws a continuous load current.  If the diode volt drop is 0.6V, compute the average(or mean) output( or load) voltage. Find the voltage rating of the device.

Three phase diode rectifier connected to 400V, 50 Hz source is feeding a resistive load of 100 with High 3 inductance. The distortion factor given to be . What π will be the power drawn at fundamental frequency from mains. (A) 5.2 kW (C) 27.9 kW (B) 16.8 kW (D) 48.1 kW

Exercises: 1. A full-wave bridge rectifier isolated from the 220 V rms power line by a transformer. Assuming the diode voltage drops are 0.7 V. i. What turns ratio should the transformer have in order to produce an average current of 1A in a 10 load? ii. What is the average current in each diode under the conditions of (i)? iii. What minimum PIV rating should each diode have? iv. How much power is dissipated by each diode? 2. A full-wave bridge rectifier is operated from a 50 Hz, 220 V rms line. It has a 100 μF filter capacitor and a 2 k 2 load. Neglect diode voltage drops. i. What is the percent ripple? ii. What is the average current in the load?