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1. |
The laminations of the armature of a D.C. machine are usually ___________ thick? |
A. | 0.1 to 0.2 mm |
B. | 0.2 to 0.3 mm |
C. | 0.3 to 0.4 mm |
D. | 0.4 to 0.5 mm |
Answer» E. | |