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| Q. |
Efficiency of Ward Leonard method is |
| A. | higher than rheostatic control method but lower than shunted field control method |
| B. | lower than rheostatic control method |
| C. | higher than rheostatic control method and shunted field control method |
| D. | depends on load |
| Answer» C. higher than rheostatic control method and shunted field control method | |
| Explanation: unlike all other methods, external resistance is not added in the circuit of control system. thus, efficiency of ward leonard control method is always highest at various different speeds. | |
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