3/ A 220 V d.c. shunt motor draws 52 A from supply mains when running at 750 r.p.m., Ra= 0.2 2, Rsh = 110 2. Calculate the resistance to be connected in series with armature to reduce the speed to 600 r.p.m. Note: - Iai = Ia2.

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Q3/ A 220 V d.c. shunt motor draws 52 A from supply mains when running at 750 r.p.m.,
Ra= 0.2 2, Rsh = 110 . Calculate the resistance to be connected in series with
armature to reduce the speed to 600 r.p.m.
Note: - Iai =
Iaz.
Transcribed Image Text:Q3/ A 220 V d.c. shunt motor draws 52 A from supply mains when running at 750 r.p.m., Ra= 0.2 2, Rsh = 110 . Calculate the resistance to be connected in series with armature to reduce the speed to 600 r.p.m. Note: - Iai = Iaz.
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