A single-phase full-wave AC phase controller feeds power to a resistive load of 100 Ω from a 220 V, 50 Hz supply. What will be the R.M.S. output voltage at delay angles a1 = a2 = a = π /2 of both transistors?
1
\(\frac{220}{\sqrt{2}}V\)
2
\(\sqrt{2\times 220~}~V\)
3
√2 × 110 V
4
√2 × 220 V