The purpose of providing dummy coils in a generator is__________________?
Correct answer: D. to provide mechanical balance for the rotor
- A. to reduce eddy current losses
- B. to enhance flux density
- C. to amplify voltage
- D. to provide mechanical balance for the rotor
Explanation
Dummy coils are placed in unused armature slots and connected mechanically, not electrically. Their purpose is to maintain mechanical balance and uniform rotation of the rotor.
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