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Question
In a single phase full wave regulator feeding an R-L load, the power factor angle of load is θ. The range of control of firing angle α is
Options:
A .  0 ≤ α ≤ π
B .  θ ≤ α ≤ π
C .  0 ≤ α ≤ (π - θ)
D .  θ ≤ α ≤ (π + θ)
Answer: Option B
Answer: (b).θ ≤ α ≤ π

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