A 240 V shunt motor with the armature resistance of 0.1 Ω runs at 850 – McqOptions

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1.	A 240 V shunt motor with the armature resistance of 0.1 Ω runs at 850 r.p.m. for an armature current of 70 A. If its speed is to be reduced to 650 r.p.m., the resistance to be placed in series for an armature current of 50 A is nearly
A.	0.82 Ω
B.	1.14 Ω
C.	1.24 Ω
D.	1.34 Ω
Answer» C. 1.24 Ω

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