1. The three phase bidirectional controller as shown in Figure supplies a Y-connected resistive load of R = 102 and line to line voltage is 208V RMS and f=60 Hz. For the delay α=/6 determine (a)The output power 1R (b)The input power factor PF (c) Give one application of such a converter 2. A single phase full wave ac voltage controller supplies an RL load. The input supply voltage is 230V, RMS at 50Hz. The load has L = 10mH, R = 102, the delay angle of SCR 1 and 2 are equal, where al=a2=π/3, ẞ=197.4° Determine: a. Conduction angle of the thyristor. b. RMS output voltage. c. The input power factor. 3. The input voltage to the cycloconverter in Fig.2 is 120 v (r.m.s), 50Hz. The load resister is 502 and the inductance is L-40 mH. The frequency of the output voltage is 25Hz. If the converters are operated as semi-converters such that 0≤α≤π the delay angle is ap = 2, determine: 3 a) The rms value of the output voltage. Vo ) The rms value of the load current. =) The input power factor. vm √(Sin or Sin2a 8