10. A D.C series motor hoists a load at 4 m/sec while taking 30 A at 300 V from D.C mains. The total resistance of the motor is 0.3N- The external resistance to be added in the motor circuit to slow the hoisting speed from 4 m/s to 2 m/s. (assuming no magnetic saturation), is (a) 4.352 (c) 3 745O (b) 3.5142 (d) 4 850
10. A D.C series motor hoists a load at 4 m/sec while taking 30 A at 300 V from D.C mains. The total resistance of the motor is 0.3N- The external resistance to be added in the motor circuit to slow the hoisting speed from 4 m/s to 2 m/s. (assuming no magnetic saturation), is (a) 4.352 (c) 3 745O (b) 3.5142 (d) 4 850
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