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Load characteristics drawn at Ra =0 and Ra not equal to 0, will lie _____

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Load characteristics drawn at Ra =0 and Ra not equal to 0, will lie _____

(a) Above

(b) On

(c) Below

(d) Intersecting

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This intriguing question comes from No Load with On Load Characteristics of DC Generator in division DC Generator of DC Machines

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Right answer is (c) Below

Explanation: Load characteristics with at Ra =0 will lie below the load characteristics drawn at Ra not equal to 0. To the load characteristic we add IaRa drop to get Ea induced emf with load. Thus, it will lie above.

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