Calculate the value of the fundamental displacement factor for 1-Φ Full wave semi-converter if the firing angle value is 20°.(a) .82(b) .98(c) .74(d) .26I got this question during an interview.My question comes from Solid State Controlled Drives topic in chapter Introduction to Solid State Controlled Drives of Electric Drives

Calculate the value of the fundamental displacement factor for 1-Φ Fu

1.	Calculate the value of the fundamental displacement factor for 1-Φ Full wave semi-converter if the firing angle value is 20°.(a) .82(b) .98(c) .74(d) .26I got this question during an interview.My question comes from Solid State Controlled Drives topic in chapter Introduction to Solid State Controlled Drives of Electric Drives
Answer» The CORRECT CHOICE is (b) .98 Explanation: Fundamental displacement factor is the cosine of ANGLE DIFFERENCE between the fundamental voltage and fundamental current. The fundamental displacement factor for 1-Φ FULL wave semi-converter is cos(∝÷2)=cos(10°)=.98.

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