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प्रश्न
Each one of the following changes will increase emf (or voltage) in a simple generator except:
(a) increasing the number of turns in the armature coil
(b) winding the coil on a soft iron armature
(c) increasing the size of the gap in which the armature turns
(d) increasing the speed of rotation
उत्तर
increasing the size of the gap in which the armature turns
The increase in the size of the gap, in which armature turns, has no effect on voltage.
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