Question

In a parallel inverter

• A. Each thyristor is turned on twice during each cycle
• B. Each thyristor is turned on once during each cycle
• C. Each thyristor is turned on either once or twice during each cycle
• D. Each thyristor may be turned on up to four times during each cycle

Hint:

Parallel inverter uses alternate conduction of SCRs.

Answer 1

The Correct Option is A

Concept: Parallel inverter uses thyristors for AC generation.

Step 1: Working Alternate switching produces AC waveform.

Step 2: Current flow Each SCR conducts during positive and negative half cycles.

Step 3: Switching sequence Each SCR is triggered twice in a cycle.

Step 4: Output waveform Ensures continuous AC output.

Step 5: Conclusion \[ \boxed{\text{Each thyristor is turned on twice during each cycle}} \]

Final Answer: \[ \boxed{(A)} \]