MCQOPTIONS
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| 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. | |