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External Characteristic is a plot of _____________

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External Characteristic is a plot of _____________

(a) Generated emf and load current

(b) Terminal voltage and load current

(c) Generated voltage and field current

(d) Armature current and field current

I have been asked this question in final exam.

My enquiry is from External and Armature Characteristics of DC Generator topic in chapter DC Generator of DC Machines

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The correct answer is (b) Terminal voltage and load current

The explanation: The load characteristic of a dc generator at a particular speed is the relationship between its terminal voltage and load current (line current) and is also termed as the external characteristic. The internal characteristic is the plot between the generated emf and load current.

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