|electric drive is dependent of electric supply, electric traction system is tried up to electrified routes only.
||It is self-contained unit and therefore can be suitable for any track.
|In case of failure of supply the whole system will come to rest as it is dependent of electric supply.
||The system is self contained there is no such condition.
|electric drive is more clean as there are burning of any fuel and no fumes etc.
||mechanical drive requires burning of therefore it may contains ash or fumes etc.
|electric drive is flexible as it can be brought any where and can be control from any location.
||due to mechanical components this drive is not flexible.
|It occupies less space as compared to other forms of drives and is , therefore very compact source of drive.
||due to mechanical components this drive required more space.
|motor operating characteristics can easily be modified as per the requirement of the drive.
||It is very difficult to modify the characteristics of the mechanical drive.
|maintenance cost is less due to less no. of mechanical parts.
||maintenance cost is more due to more no. of mechanical parts.
|electric braking much superior and economical.
||mechanical breaking system has few disadvantages like were & tear of parts etc.