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Power Electronic Devices

Quick practice

Question 1 of 5

A 220V, 1450 rpm, 100 A separately excited dc motor has an armature resistance of 0.05 \Omega   the machine is driven by a 3-\phi  half controlled converter operating from a 3-\phi , 220 V, 50 Hz supply. The motor operates at rated speed and rated load current. Assume continuous conduction % THD in source current at AC mains is given by

A

70.5%

B

None

C

31%

D

68.2%

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