A single phase electric heater uses phase controlled thyristors. The firing angle is 90°. The degree of heating is
Options
A. 25% of maximum
B. 50% of maximum
C. 75% of maximum
D. none of the above
Correct Answer
50% of maximum
Explanation
Conduction occurs only during 50% of wave.
More questions
1. If an amplifier with gain of - 1000 and feedback factor ? = - 0.1 had a gain change of 20% due to temperature, the change in gain of the feedback amplifier would be