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4 DC Generators > ADDITIONAL SOLVED PROBLEMS

ADDITIONAL SOLVED PROBLEMS

Example 4.13 A DC shunt generator having terminal voltage 250 V, delivers load current 195 A. The armature and shunt field resistances are 0.05 Ω. and 50 Ω, respectively. Calculate (i) the shunt field current, (ii) the armature current, (iii) the generated emf in armature and (iv) the load resistance.

Solution

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Example 4.14 A long-shunt compound DC generator having terminal voltage 300 V delivers a load current of 60 A. The armature, series field and shunt field resistances of the generator are 0.05 Ω, 0.04 Ω. and 200 Ω, respectively. Calculate the generated voltage and the armature current if the contact voltage drop per brush is 1 V.

Solution

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The armature current and the generated emf are 61.5 A and 307.535 V, respectively.


  

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