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Calculate the conduction angle in purely inductive load if the firing angle is 165°.(a) 78°(b) 55°(c) 30°(d) 19°The question was posed to me at a job interview.Query is from Solid-State Switching Circuits in section Introduction to Solid-State Switching Circuits of Electric Drives |
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Answer» RIGHT answer is (c) 30° Explanation: The conduction ANGLE in the PURELY inductive load is β-α=2(π-∝)=2(180°-165°)=30°. The conduction angle is the angle for which the current exists in the CIRCUIT. The AVERAGE value of the voltage in a purely inductive load is zero. |
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