Question:

Which electrical motor is used in fans of our trains in India?

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i know its a 110V motor, but which one? A.c or d.c?

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  1. Depends on direct current

    1.1 Third Rail

    1.2 Fourth Rail

    2 Low-frequency alternating current

    3 Standard frequency alternating current

    4 Multisystem locomotives

    A railway electrification system is a way of supplying electric power to electric locomotives and multiple units.

    Such systems can be classified by:

    conductor (third rail or overhead wire)

    voltage

    current (DC or AC)

    AC frequency; single-phase or three-phase (invented by Hungarian Kálmán Kandó)

    Early electric systems used relatively low-voltage DC.

    Electric motors were fed directly from mains, and were controlled by using a combination of resistors and relays that connected the motors in parallel or series.

    The common voltages are 600 V and 750 V for trams and metros, and 1500 V and 3000 V for railways.

    In the past, Rotary converters or mercury arc rectifiers were used to convert utility (mains) AC power to the required DC voltage.

    Today, this is usually done by semiconductor rectifiers.

    The DC system is quite simple, but requires thick wires and short distances between feeder stations; additionally, there are significant resistive losses.

    The feeder stations require watching personal permanently, and only one train or locomotive could enter one section. The distance between two feeder stations at 3000 V system is about 25 km (15.6 miles).

    Auxiliary machinery, such as fans and compressors, are also powered by motors fed directly from mains. Consequently, these motors are often unusually bulky.


  2. thats a 110 volt  electrical motor and as far as the company is concerned u can have a look at the motor itself but u can get a fast motor from the  company almonard thats the best hi speed commercial motor for fans in india

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