01| A (250) volt d.c shunt motor has shunt field resistance of (250 2) and an...

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01| A (250) volt d.c shunt motor has shunt field resistance of (250 2) and an armature resistance of (0.250) for a given load Torque the motor runs at (1500 r,p,m) and draws an armature current of (20A), if a resistance of (250 N) is inserted in series with field the load Torque remaining the same , find out speed and armature current. Q2\ A Series D.C motor has a terminal voltage of (250 V) armature is ounce of (0.23 2) and has full – load speed of (1200 r.p.m) where the armature current is (62 A) Calculate:- 1- The speed when the armature current is (10 A). 2- The minimum current if the maximum speed permissible is 3000 r.p.m ettacal Mac 01| A (250) volt d.c shunt motor has shunt field resistance of (250 2) and an armature resistance of (0.250) for a given load Torque the motor runs at (1500 r,p,m) and draws an armature current of (20A), if a resistance of (250 N) is inserted in series with field the load Torque remaining the same , find out speed and armature current. Q2\ A Series D.C motor has a terminal voltage of (250 V) armature is ounce of (0.23 2) and has full – load speed of (1200 r.p.m) where the armature current is (62 A) Calculate:- 1- The speed when the armature current is (10 A). 2- The minimum current if the maximum speed permissible is 3000 r.p.m ettacal Mac

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