Question

In the given figure:

1. Identify the machine.
2. Name the parts P and Q and R of the machine.
3. Give the polarities of the magnetic poles.
4. Write the two ways of increasing the output voltage.

Answer 1

1. The given machine is an AC generator.
2. P: Armature coil
   Q: Carbon Brushes
   R: Slip rings
3. The magnetic poles are usually a North (N) pole and a South (S) pole. According to standard conventions for such diagrams, the left pole is North and the right pole is South, creating a magnetic field from left to right.
4. Increasing the speed of rotation of the armature. Using stronger magnets (to increase the magnetic field strength). Increase the number of turns in the armature coil.