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Explanation: Adding the armature resistance drop we can obtain the external characteristic for a dc generator. 9. Identify the machines by observing their external characteristics for (i) and (ii) respectively. (i) (ii) a) Separately excited dc generator, shunt generator b) Shunt generator, separately excited dc generator c) Differentially compound dc generator, separately excited d) Series dc generator, shunt generator View Answer Answer: a Explanation: In dc shunt generator, voltage drops off much more rapidly with load due to fal in field current with terminal voltage. http://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-operating-characteristics-dc-generator-q9.png http://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-operating-characteristics-dc-generator-q9.png http://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-operating-characteristics-dc-generator-q9.png http://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-operating-characteristics-dc-generator-q9a.png http://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-operating-characteristics-dc-generator-q9a.png http://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-operating-characteristics-dc-generator-q9a.png
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