If peak value of input voltage is Vm and firing angle is a, the average output voltage for single phase half wave and single phase full wave regulators are

• A. <img src="/_files/images/electronics-and-communication-engineering/power-electronics/280-336-1.png">
• B. <img src="/_files/images/electronics-and-communication-engineering/power-electronics/280-336-2.png">
• C. <img src="/_files/images/electronics-and-communication-engineering/power-electronics/280-336-3.png">
• D. <img src="/_files/images/electronics-and-communication-engineering/power-electronics/280-336-4.png">