Q.

A single-phase voltage controller, using one SCR in anti parallel with a diode, feeds a load R and Vs = 230 V. For a firing angel of 90° for the SCR, the PMMC voltage connected across R would read

A. 0
B. 51.8 V
C. –51.8 V
D. –36.82 V
Answer» C. –51.8 V
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