which motor is used in electric train...???????

Answer Posted / ramasamyseenu

in the engine side it uses two dc series motor and one 3phase induction motor and the purpose of dc motor is to give high starting current and to make the locomotive to move and to overcome the inertia offered during motion. The purpose of dc series motor is also to perform regenerative braking with 3phase induction motor. The purpose of three phase induction motor is to operate the engine in constant speed.
The motors which are connected below the train compartments are dc series motor it also complements the motion of train from rest thus by reducing load on the train.

Is This Answer Correct ?    4 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is the difference between changer, converter and transformer?

896


Explain what is electric traction? Explain few advantages of electric traction system?

599


I need HT sphere gap calibration table. Can any body help me.

1521


list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.

1550


Explain the functioning of diode?

653






what is ramping rate of generator

1559


can you plz send l&t aptitude questions if available its urgent plz plz plz

1645


In parallel operation time both NGR’s close or not close if both close what will happen

3268


What is marx circuit?

647


A 50Hz,4-pole,3-phase,star-connected synchronous motor has a synchronous reactance of 12ohmsper phase and negligible armature resistances.the excitation is such as to give an open-circuit voltage of 13.2kilovolt.the motor is connected to 115kilovolt, 50hertz supplying. what maximum load can be the motor torque,line current and power factor?

1877


how to determine the cable size...pls explain me with the formula taking particular load....does the factors like impedance & short circuit rating influence the cable size, if so how....

1577


What is the general system requirement of alternator?

1319


How to select batteries required for ups and the inverter if we Known load? And how AH is selected of battery?

879


How many double suspension hardware fittings are required on a double circuit transmission tower?

1406


my question is how to answer the question "you are from b.tech eee background and why do you want to go for banking

880