A two winding transformer is feeding a single phase half wave rectifier circuit. The load is purely resistive. The rms value of transformer secondary current is Is and rms value of load current in Irms. Then

• Is = Irms irrespective of the value of firing angle
• Is = 0.5 Irms irrespective of the value of firing angle
• Is = Irms if firing angle is less than 30°
• Is = Irms if firing angle is more than 30°

Correct Answer: Is = Irms irrespective of the value of firing angle

Explanation:

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