1.
The single phase fully controlled rectifier allows conversion of single phase ____________________.
A
DC into AC
B
AC into DC
C
AC into AC
D
DC into DC
Answer and explanation
Correct Answer: B — AC into DC
A single-phase fully controlled rectifier uses four thyristors in a full-bridge configuration to convert AC input into controlled DC output. The firing angle α determines the output voltage level, ranging from maximum positive DC at α = 0° down to zero at α = 180°.