Ms. Rani decides to convert her AC generator into a DC generator. Which one of the following she would need to use?
A split-ring type commutator
Slip rings and brushes
A stronger magnetic field
A rectangular wire loop
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC NDA-2 – 2023
– To convert this to direct current (DC), the direction of the current in the external circuit needs to be maintained constant.
– A split-ring commutator achieves this by reversing the connection of the coil to the external circuit every half rotation, ensuring that the current flows in the same direction in the external load.
– A stronger magnetic field would increase the magnitude of the induced electromotive force (EMF) and current, but would not change the nature of the output from AC to DC.
– A rectangular wire loop is the armature coil, which is a component of both AC and DC generators. The type of output depends on how the coil is connected to the external circuit (via slip rings for AC, or a commutator for DC).