A d.c. shunt motor runs at 500 r.p.m. at 220 V. A resistance of 4.5 Ω is added in series with the armature for speed control. The armature resistance is 0.5 Ω. The current to stall the motor is

Q. A d.c. shunt motor runs at 500 r.p.m. at 220 V. A resistance of 4.5 Ω is added in series with the armature for speed control. The armature resistance is 0.5 Ω. The current to stall the motor is

A.            44 A

B.            50 A

C.            40 A

D.            30 A

Answer: 44 A