GEOLOGY

EARTH SCIENCE

MAGNETISM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A device that is able to reverse the direction of current in an electromagnet causing a motor to spin the opposite way is known as:
A
a rotor
B
a generator
C
a magnet
D
a commutator
Explanation: 

Detailed explanation-1: -A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit.

Detailed explanation-2: -A commutator is a rotatory electrical switch that reverses the direction of current between the rotor and the external circuit periodically. The reversal of the current each half-turn gives rise to a steady rotating torque.

Detailed explanation-3: -The split ring in the electric motor also known as a commutator reverses the direction of current flowing through the coil after every half rotation of the coil. Due to this the coil continues to rotate in the same direction.

Detailed explanation-4: -The function of commutator rings is to reverse the direction of current flowing through the coil after every half rotation.

Detailed explanation-5: -A commutator is a specialized slip ring typically used on Direct Current motors and electrical generators to transfer electrical power between the stationary housing and the rotating armature with the added purpose of reversing the electrical current direction.

There is 1 question to complete.