Use of DC machine

We have enough category of AC machines more relliable than DC machine then why we are using DC machines in some application yet?

Questions by Abhijit_atrangi   answers by Abhijit_atrangi

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shravan.rawal

  • Sep 4th, 2009
 

Take an eg. of DC series motor, it's properties are suitable for Railway engine, at the start it has high torque and low speed and once the core gets saturated it's torque is low but the speed is higher, so for this kind of special requirement we require DC M/C

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rajakumar1985

  • Sep 7th, 2009
 

Each AC and DC machine having its own characteristics.According to the reguirement, the motors will be selected. Also the availability of supply is taken into consideration. But normally AC is preffered than DC due to its low maintenance and relaiability.

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