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1. |
A DC motor has the following specifications: 10hp, 37.5 A, 230V; flud/pole = 0.01Wb, number of poles = 4, number of conductors = 666, number of parallel paths = 2. Armature resistance = 0.267 &ohm. The armature reaction is negligible and rotational losses are 600W. The motor operates from a 230V DC supply. I f the motor runs at 1000 rpm, the output torque produced in (in Nm) is _________. |
A. | 42 |
B. | 57 to 58 |
C. | 51 |
D. | 15 |
Answer» C. 51 | |