1.

The no-load current of a 220 V DC shunt motor is 2 A with corresponding running speed of 1200 r.p.m. The full-load current is 40 A with an armature resistance being 0.25 Ω. Assuming constant flux during this range of speed, the full-load speed will be

A. 864 r.p.m.
B. 948 r.p.m.
C. 1148 r.p.m.
D. 1200 r.p.m.
Answer» D. 1200 r.p.m.


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