The firing angles of thyristors are controlled by
A. pulse generating circuits
B. relaxation oscillators
C. microprocessor
D. all of the mentioned
Answer:A
The firing angles of thyristors are controlled by
A. pulse generating circuits B. relaxation oscillators C. microprocessor D. all of the mentioned
Explanation: In early days, the firing angles were controlled by pulse generating circuits like relaxation oscillators and now, they are accurately fired using a microprocessor.