Question

What energy conversion takes place in a generator?
(a) Mechanical energy into magnetic energy
(b) Mechanical energy into chemical energy
(c) Mechanical energy into electric energy
(d) Electrical energy into mechanical energy

Answer 1

- Hint: We will take the help of a diagram and understand the two types of generator. Along with the understanding of the energy produced by them by rotation created by magnets on its two sides and we will be able to understand the conversion also.

Complete step-by-step solution
Electric generator: An electric generator is simply a generator which is used for the generation of electricity. This electricity is generated after converting mechanical energy into electrical energy. For example if we consider our home then we will find that whenever the light gets off the generator brings the light. This is because of the conversion of mechanical energy into electrical energy only.
We will better understand it with the help of a diagram.

In the diagram we can clearly see ABCD which is kept between two magnets one is north and the other one is south. These two magnets create a magnetic field which lets the loop ABCD to rotate. As magnets last for a very long time, the field produced is permanent. Look at the rings ${{R}_{1}}$ and ${{R}_{2}}$. These are slippery and can be adjusted as per need. These have been used here and have been insulated rings. These rings are attached to brushes ${{B}_{1}}$ and ${{B}_{2}}$. When we slide the rings these brushes remain in contact with them.

Working: In the magnetic field the loop rotates by first letting AB side upward. Whenever we slide the rings then also, we will get the same flow of current in the given loop. The first diagram shows about the alternating current while the second diagram shows about the direct current. The main difference between the two is that in the alternating current, we use two rings whereas in case of direct current only split rings are used. This can be clearly seen from the diagram.
Due to the motion created by the field the mechanical energy that is produced is changed into electrical energy. Hence, the correct option is (c) Mechanical energy into electric energy.

Note: Many generators use A.C. generators to produce electricity. This is due to the fact that they come less cheap in the market than the D.C. one. Moreover, A.C. generators are reliable and simple to understand. This type of equation requires the information related to both A.C. and D.C. generators. While making diagrams for these generators one should know the difference about slippery rings in them. For A.C. we use two slippery rings and for D.C. we use only split rings. If this step is not followed then the answer will get wrong and hence, it will lead us to the wrong option.