Which traction system has high efficiency?
The equipment in DC traction system is less costly, lighter and more efficient than AC traction system. It causes no electrical interference with nearby communication lines.
Which type of traction system has lowest efficiency?
DC train consumes less energy compared to AC unit for operating same service conditions. The equipment in DC traction system is less costly, lighter and more efficient than AC traction system.
Which one of the following motor is most suitable for electric traction Mcq?
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.
Which type of traction is recommended for the urban suburban services?
The dc series motor is most suitable for traction services but more particularly for urban/suburban services because. (a) dc series motors are suitable for regenerative braking. (b) dc series motors are capable of withstanding rapid fluctuations in supply voltage.
Which type of braking is mostly used in electric traction?
Dynamic braking is the use of an electric traction motor as a generator when slowing a vehicle such as an electric or diesel-electric locomotive.
Which type of electric traction system is widely used in India?
Railway works under the Indian railway which is a state-owned organization of the Ministry of railway. Indian railway traction system uses 1.5 kV DC around Bombay and 25Kv ac is used in rest of the country. The supply for traction system is taken from state utility which is three phase source at 132/220 kV.
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 is difference between electric and non electric traction system?
The traction system can be classified as non-electric and electric traction systems. A traction system that doesn’t use electrical energy for the movement of vehicle at any stage is referred as non-electric traction system.
What is electric traction explain in brief?
Electric Traction- The system which use electrical power for traction system i.e. for railways, trams, trolleys, etc. is called electrical traction. OR Electric traction means a locomotion in which the driving force is obtained from electric motors.
Which motor is most suitable for electric traction?
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 of the following electric motor is suitable for traction?
DC series motor is best suited for DC traction, cranes as it provides high starting torque and easy speed control which is primary requirement of DC traction.
Which of the following motor is suitable for EV?
Induction motors are the preferred choice for performance oriented electric vehicles due to its cheap cost. The other advantage is that it can withstand rugged environmental conditions. Due to these advantages, the Indian railways has started replacing its DC motors with AC induction motors.
Which locomotive has highest operational availability?
The electric locomotive has the highest operational availability.
What is the maximum speed limit in kmph for urban suburban and main line service?
Duration of stop = 25 s. Braking retardation = 3.2 kmphps. Example 10.7: A suburban electric train has a maximum speed of 75 kmph.
What is an electric traction motor?
A traction motor is an electric motor used for propulsion of a vehicle, such as locomotives, electric or hydrogen vehicles, elevators or electric multiple unit.