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| 1. |
Define construction of electric motor |
| Answer» Electric motor: It converts electrical energy into mechanical energy.Principle : A current carrying conductor placed perpendicular to magnetic field experiences a force.Construction:1) Armature coil:It consist of a single loop of an insulated copper wire in the form of a rectangle.2) Strong field magnet:Armature coil is placed between 2 pole pieces of a strong magnet which provide strong magnetic field.3)Split ring type commutator:It consist of 2 halves of a metallic ring.The two ends of armature coil are connected to these 2 halves of ring.Commutators reverses the direction of current in armature coil.4)Brushes:Two carbon brushes press against the commutator.These brushes act as contact between commutator and terminal battery.5)Battery:It is connected across the carbon brushes.It supplies current to the armature coil. | |