In which of the following are commutators used
Correct answer: D. both b and c
- A. AC generator
- B. DC generator
- C. DC motor
- D. both b and c
Explanation
D is the correct answer. Commutators are used in both DC generators and DC motors to ensure that the direction of the current in the armature coil remains constant, thereby maintaining a consistent direction of rotation in the motor or generator.
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Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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