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Which of the following statement about a double squirrel cage induction motor is incorrect ? | |
A. | It has better speed reg-ulation than squirrel cage motor [Wrong Answer] |
B. | Its upper cage is of low resistance and lower cage of high resistance [Correct Answer] |
C. | It is particularly useful where frequent starting under heavy loads is required [Wrong Answer] |
D. | It maintains high efficiency during normal operating conditions [Wrong Answer] |