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Q9) A single-phase, 230 V, 50 Hz, 3:1 step-down transformer has a secondary winding resistance of 1 Ω and supplies a half-wave rectifier circuit. The rectifier circuit has a resistive load of 680  and diode has a forward resistance of 14 Ω.

(a) Sketch EACH of the following:

(i) the circuit diagram; (3)

(ii) the load voltage waveform indicating maximum and average voltage levels. (3)

(b) Calculate EACH of the following load values:

(i) the maximum current; (4)

(ii) the average current; (3)

(iii) the average voltage. (3)