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This seems like a question from an electrical course, and is probably best answered by referring to your course materials.

It's your test question, not ours, and there won't always be someone else to ask for the answer.

Earn your diploma.

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Q: How energy conversion takes place in dc machine?
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What type of energy conversion takes place in an electrolytic cell?

electrical energy into chemical energy


Why efficiency of transformer is higher than the efficiency of motor and generator?

Transformer is a electromagnetic stationary device which converts electrical energy from one level to another level by keepings its frequency constant. Whereas in motors or generator electrical energy is converted to mechanical energy and vice versa. Now when this conversion of energy is taking place noise and friction comes in existence due to which some loss of input energy takes place due to which energy output reduces and efficiency accordingly.


How do you use hydroelectricity to make electricity?

when water fiows from water resource then potential energy converts into kinetic energy. due to this water rotates to the turbines and conversion of kinetic energy into mechanical takes place . the shaft of turbine is connected to generator and in turbine due to rotation magnetic flux takesplace and electricity is produced.


How is electricity generated by a generator?

Energy doesn't 'take place'. Until you become more comfortable with it, you should think of it as some kind of fluid, that flows from place to place, and can be stored in several ways for when it's needed. An electric generator is a machine that has a shaft and two terminal connections. It can supply electrical energy through the terminals when you spin the shaft. You just have to find something else that has energy, and skim energy off of that to spin the shaft of the generator. Some possibilities are: -- wind turning a windmill coupled to the shaft -- water falling through vanes on the shaft -- fire boiling water and blowing the steam through vanes on the shaft -- uranium in a nuclear reactor getting hot and boiling water and blowing the steam through vanes on the shaft -- a person pedaling an exercise bike coupled to the shaft -- 400 hamsters running on a treadmill coupled to the shaft. In every case, it takes 'kinetic energy' to spin the shaft, and the generator converts that kinetic energy into electrical energy.


Why does the field winding of a series dc machine has less number of turns than that of a dc shunt machine?

The series winding takes the full load current of the generator. So it require only a few turns to produce the required magnetic field and so the resistance is lower.