Contents
What is meant by electric traction?
Introduction: By electric traction is meant locomotion in which the driving (or tractive) force is obtained from electric motors. It is used in electric trains, tramcars, trolley buses and diesel-electric vehicles etc.
What are the advantages of electric traction?
Electric traction system It has many advantages over non-electric traction systems such as more clean and easy to handle, no need of coal and water, easy speed control, high efficiency, low maintenance and running costs, etc.
What are the types of electric traction?
The three main types of electric traction systems that exist are as follows:
- Direct Current (DC) electrification system.
- Alternating Current (AC) electrification system.
- Composite system.
What are the disadvantages of electric traction system?
6. Disadvantages of Electric Traction (i) High initial expenditure (ii) Failure of supply is a problem (iii) Electrically operated vehicles have to move only on electrified track (iv) For braking & control, additional equipments required (v) Interference with telegraphs and telephone lines.
What are the disadvantage of electric traction?
Disadvantages of Electric Traction Drives Requires high capital cost. Less flexibility of the routes. Can cause interference with nearby communication lines.
What are the disadvantages of traction?
The disadvantages are as follows: Procedural sedation is typically required; accordingly, this method usually is not the initial method of choice. More than one operator is required. This reduction requires prolonged force and endurance.
Do electric trains have engines?
Instead of a tank of diesel and an engine, the train has a tank of hydrogen and a fuel cell that combines the hydrogen with oxygen from the air, without combustion. With the only emission being water, the fuel cells provide power and have zero emissions.
What are the advantages and disadvantages of electric traction system?
This is non-electric drive mostly used for road transport. Main advantages of the drive are low investment and flexibility of the routs and have the disadvantages of low overload capacity, uneconomical operation, high maintenance cost and short life.
Which motor is suitable for electric traction work?
Many single phase ac motors have been developed for traction purposes but only compensated series type commutator motor is found to be best suited for traction. Single phase induction motors have been abandoned as they are not capable of developing high starting torque.
What are the disadvantages of diesel-electric traction?
As compared with an electric locomotive, however, the diesel-electric has an important drawback: since its output is essentially limited to that of its diesel engine, it can develop less horsepower per locomotive unit.
What is the advantage and disadvantage of electric traction?
What are the disadvantages of traction control?
Disadvantages of traction control :
- Cost is high because of the high-functioning gear that’s involved in traction control can make a car an increasingly expensive purchase.
- Cost of maintenance.
- Traction control systems are not ideal for all kinds of situations so its use is limited.
- Wear on the brake components.
How does electric traction work in a train?
Electric traction means using the electric power for traction system i.e. for railways, trams, trolleys etc. Now a day, magnetic traction is also used for bullet trains. How does Electric Traction Work? In OHE, or overhead electrification systems, the supply of electricity is through an overhead system of suspended cables known as the Catenary.
What kind of locomotive is used for electric traction?
Railway electric traction describes the various types of locomotive and multiple units that are used on electrification systems around the world.
What kind of current does an electric train use?
AC (Alternating Current) or on both (AC/DC – Bi-current). Electric Locomotives, though high on electrical engineering, work on the single principle of drawing current from external sources and then after sufficiently “modifying” it, feed it to the traction motors.
One of the disadvantages in this system is that as a loco passes a booster transformer, there is a momentary interruption in the supply (because of the break in the catenary) with the attendant problems of arcing and transients on the line, as well as radio frequency interference.