Question bank – chief loco Inspector -Diesel Part – 6

23-02-2019
What’s the history of EMU services on IR?
June 21, 2019

Bombay area EMUs date back to the 1920's. In 1925, EMUs from Cammell-Laird and Uerdingenwagonfabrik (Germany) were used on the line from Victoria Terminus to Kurla (what would become the core of the CR suburban service). In 1928 EMU rakes from Cammell-Laird / BTH were used on what is now WR. These were in use until 1974. The BTH rakes were even

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What kinds of electric multiple units does IR operate?
June 21, 2019

The Mumbai region with 1.5kV DC traction has several models of EMUs, classified from WCU-1 through WCU-15 (and beyond??). Most models have DC traction motors with rheostatic control (resistance banks to vary the input power supply). DC EMUs are also used on the Lonavala-Pune section. Information on the precise differences among various older EMU

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What does the term “multiple unit” or “MU” mean, and what is an EMU or DMU?
June 21, 2019

There are two senses of the phrase "multiple unit" to be distinguished. Two or more regular locomotives may be coupled together for greater hauling capacity. In such a cases the locos are said to be operating as multiple units, or to be "MU'ed together" (US terminology: "lash-up"). ये भी पढ़े - योगासन का

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What are the technical specifications for the various loco classes?
June 21, 2019

The section on diesel and electric loco specifications has information on most diesel and electric locomotives of IR, and includes figures on power, max. speed, serial numbers, etc. The information is drawn mostly from Jal Daboo's book, with updates and additions from IRFCA members. Also see the section on additional electric loco specifications

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Steam Locomotive Classes – Introduction
June 21, 2019

This FAQ section was not meant to be a comprehensive list of features or history of locomotive classes. Some classes have been selected for railfan interest, and in the case of locos that are restricted to certain areas, information on where they may be seen today has been provided. Detailed information on dimensions and operating figures, makers'

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Locomotive – What does ‘Bo-Bo’ or ‘Co-Co’ mean?
June 20, 2019

Diesel and electric locos' wheel arrangements are described using a system where the axles of a loco are counted, with powered axles being described using letters and the unpowered axles (if any) indicated by digits. A set of two independently powered axles on a bogie is indicated by ‘Bo’, and a set of three independently powered axles on a

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