engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Electrical Machines Alternator and Synchronous Motors
Which of the following statements about armature reaction of alternator is NOT correct?
1
It increases the generated voltage and sparking at brushes reduces.
2
It reduces the generated voltage by distorting the main flux and it causes sparking at the brushes.
3
It depends on both load current and power factor.
4
When the generator is loaded, the armature carries the current; the armature current sets up its own magnetic field.