In single phase RLE load, calculate the voltage across the thyristor when current decays to zero using the data: (Vs)r.m.s=340 V, f=50 Hz, R=2 Ω, E=150 V, β=160°.(a) 45.89 V(b) 74.45 V(c) 54.85 V(d) 84.48 VI had been asked this question in an online quiz.This intriguing question originated from Solid-State Switching Circuits in section Introduction to Solid-State Switching Circuits of Electric Drives

In single phase RLE load, calculate the voltage across the thyristor w

1.	In single phase RLE load, calculate the voltage across the thyristor when current decays to zero using the data: (Vs)r.m.s=340 V, f=50 Hz, R=2 Ω, E=150 V, β=160°.(a) 45.89 V(b) 74.45 V(c) 54.85 V(d) 84.48 VI had been asked this question in an online quiz.This intriguing question originated from Solid-State Switching Circuits in section Introduction to Solid-State Switching Circuits of Electric Drives
Answer» The correct answer is (b) 74.45 V Easiest EXPLANATION: In SINGLE PHASE RLE load the VOLTAGE across the thyristor when current DECAYS to zero VT=Vmsin(β)-E=340×√2sin(160°)-90=74.45 V.

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