hi folks.
Let us talk about a question that will make us think - OMG! I never thought this way..!
Q. why all the electrical machines are based on magnetic field interacting with current and not electric field interacting with current/charged body? is it not possible or make or is there any other reason?
Answer - folks, it is possible to make machines that work on the principle of electrostatics. Few examples would be corona motor or Whimshrust generator we talked about. We can get useful energy output in the form of electrical energy (from 2nd). About 70% of the electrical energy we generate is converted back to mechanical so corona motor will be helpful there. So it is possible. Then why don't we replace the induction motor with corona motor?
The answer my friends lies in the values of epsilon and mu for air. Epsilon is permittivity of the air and indicates the ability of air to carry electric flux lines and is of the order 10^-12. Mu is permeability of air, indicating ability of air to carry magnetic flux and is of the order of 10^-7. So ability of air to carry magnetic energy is far more (about 100000 times) than the ability to carry electric energy (flux).
The torque output produced by any machine is directly proportional to flux present in the air gap. So power output and energy efficiency of the machines based on magnetic fields will be high. So we go for those only. The machines based on electric fields have specialized applications in various fields.
Thank you for your time and please feel free to comment about any extra information or doubts.
You can also mail me your doubts and suggestions about blog on dnachiketa1010@gmail.com
Let us talk about a question that will make us think - OMG! I never thought this way..!
Q. why all the electrical machines are based on magnetic field interacting with current and not electric field interacting with current/charged body? is it not possible or make or is there any other reason?
Answer - folks, it is possible to make machines that work on the principle of electrostatics. Few examples would be corona motor or Whimshrust generator we talked about. We can get useful energy output in the form of electrical energy (from 2nd). About 70% of the electrical energy we generate is converted back to mechanical so corona motor will be helpful there. So it is possible. Then why don't we replace the induction motor with corona motor?
The answer my friends lies in the values of epsilon and mu for air. Epsilon is permittivity of the air and indicates the ability of air to carry electric flux lines and is of the order 10^-12. Mu is permeability of air, indicating ability of air to carry magnetic flux and is of the order of 10^-7. So ability of air to carry magnetic energy is far more (about 100000 times) than the ability to carry electric energy (flux).
The torque output produced by any machine is directly proportional to flux present in the air gap. So power output and energy efficiency of the machines based on magnetic fields will be high. So we go for those only. The machines based on electric fields have specialized applications in various fields.
Thank you for your time and please feel free to comment about any extra information or doubts.
You can also mail me your doubts and suggestions about blog on dnachiketa1010@gmail.com
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