The terminal voltage of a D.C. shunt generator drops on load because of all of the following reasons except:_____________?
Correct answer: D. commutation
- A. armature reaction
- B. armature resistance drop
- C. field weakening due to armature reaction and armature
- D. commutation
Explanation
Load voltage drops result from armature resistance, armature reaction, and the resulting reduction in field flux. Commutation is mainly associated with brush sparking and is not a normal cause of terminal-voltage drop.
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