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.
Which motor is most suitable for traction service Mcq?
For electric traction, DC series motors are best suited. DC series motors and AC series motors are very much recommended, as they provide a high starting torque Nowadays three-phase induction motors are also being used.
Which type of DC motor is used for traction purpose?
1. DC shunt motor is a constant speed motor but for traction purpose, the speed of the motor should vary with service conditions. 2. In case of DC shunt motor, the power output is independent of speed and is proportional to torque.
Which motors are used in traction motors and why?
Traditionally, these were series-wound brushed DC motors, usually running on approximately 600 volts. The availability of high-powered semiconductors (thyristors and the IGBT) has now made practical the use of much simpler, higher-reliability AC induction motors known as asynchronous traction motors.
Which motor is most suitable for electric traction and why?
DC series motor has develops high torque at low speeds, low torque at high speed, this is the basic requirement of traction unit. Commutating property of series motor is good so we get sparkles commutation. Torque is unaffected by variation in supply voltage. DC Series motor maintenance cost is less.
Which motor is preferred the most for traction purpose Why?
Explanation: DC motors are used for traction as, according to the characteristics of DC motors speed is inversely proportional to torque and square of armature current as well, if linear magnetization is concerned. Thus, DC motors are perfectly suitable for traction. 2.
Which method is best for series traction motors Mcq?
Explanation: Series-parallel control method is superior to the rheostatic control insofar as efficiency is concerned. However, it is limited to two speed steps. The method is commonly employed for speed control of series traction motors.
Who makes traction motors?
Traction Motors | Wabtec Corporation.
Which motor is suitable for cranes?
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