Correct Answer - Option 2 : Non-electric traction system
Concept:
A contact breaker (or "points") is a type of electrical switch, and the term typically refers to the switching device found in the distributor of the ignition systems of spark-ignition internal combustion engines.
The contact breaker is operated by an engine-driven cam, and the position of the contact breaker is set so that it opens (and hence generates a spark) at exactly the correct moment needed to ignite the fuel at the top of the piston's compression stroke.
The contact breaker is usually mounted on a plate that is able to rotate relative to the camshaft operating it.
An ignition switch, starter switch or start switch is a switch in the control system of a motor vehicle that activates the main electrical systems for the vehicle, including "accessories" (radio, power windows, etc.).
In vehicles powered by internal combustion engines, the switch provides power to the starter solenoid and the ignition system components (including the engine control unit and ignition coil), and is frequently combined with the starter switch which activates the starter motor.
Solution:
Internal combustion engine drive used for road transport is a type of Non-electric traction system.
Advantages of electric traction systems:
- It is cleanest of all other types of systems of traction; Due to this only it is ideally suitable for the underground and tube railways
- No need of storage of coal and water that in turn reduces the maintenance cost as well as the saving of high-grade coal
- Electric energy drawn from the supply distribution system is sufficient to maintain the common necessities of locomotives such as fans, lights; therefore, there is no need of providing extra generators
- The maintenance and running costs are comparatively low
- The speed control of the electric motor is easy
- Regenerative braking is possible so that the energy can be fed back to the supply system during the braking period
- In electric traction system, in addition to the mechanical braking, electric braking can also be used that reduces the wear on the brake shoes, wheels, etc.
- Electrically operated vehicles can withstand for overloads, as the system is capable of drawing more energy from the system
- High acceleration and braking retardation
