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**1. A single phase half controlled bridge rectifier operated from a120V 60Hz ac supply. The load**

current with an average value of I is continuous and negligible ripple content. If the delay angle

of thyristors is 60, calculate,

i) The harmonic factor of the input current

ii) The displacement factor

iii) The input power factor

current with an average value of I is continuous and negligible ripple content. If the delay angle

of thyristors is 60, calculate,

i) The harmonic factor of the input current

ii) The displacement factor

iii) The input power factor

**PF = I**

_{s1}/I_{s2}*cosψ**What is ψ? i think that ψ=arctan(wL/R), if so what are L and R?**