QUESTION BANK – P WAY, INDIAN RAILWAY

18-06-2019

QUESTION BANK - P WAY, INDIAN RAILWAY   Click Above or See Below PDF  SOURCE - SRCETC / TBM  & Institution of Permanent Way Engineers (INDIA), East Coast Railway   Railway Employee (App) Rail News Center ( App) Railway Question Bank ( App) Information Center    (

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How is failure of signals guarded against?
July 14, 2019

Signal installations are designed as far as possible for fail-safe operation, which means that any failure should leave the system in a state where dangerous train movements are not allowed. For instance, in case of a failure detected at a panel interlocking installation, all signals controlled by it are designed to revert to On. Similarly, a

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What is a ‘fixed signal’?
July 14, 2019

A fixed signal is any signal that is permanently erected at a location. The term is used to distinguish normal signals and indicators from hand or lamp and flag signals, detonators, flares, bells, and other special-purpose methods of signalling. Source -

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What does ‘ahead’ or ‘behind’, ‘advanced’ or ‘retarded’, or ‘front’ or ‘rear’ mean when referring to a track or signals?
July 14, 2019

All orientation terms used when talking about track, points, signals, stations, etc. are given from the point of view of the driver of a train looking in the direction that the train is moving. Thus, a signal may be ahead of him or behind him. A signal or station that he is approaching is referred to as being in front, and one that he has passed

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Sometimes a signal pole is observed to carry one signal at normal height and another much higher up; what are those? Or, what are Co-acting Signals?
July 14, 2019

A co-acting signal is a duplicate signal provided on the same mast as a stop signal, which always shows the same indication as that stop signal. The purpose of such a co-acting signal is to allow a continuous unobstructed view of the signal indication from all positions where a driver might need to observe it, in cases where an overbridge or other

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What is the purpose of the white lamps fitted to the rear of signals?
July 14, 2019

Signals that face away from the signal cabin are provided with back lights to enable the signal operator to see the aspect of the signal. Normally a single white lamp is lit when the signal is on, and no lamp is lit otherwise. For stop signals that can show the Attention indication, two white lamps are visible in the on aspect and no lamps

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What does it mean when a colour-light signal does not face along the tracks but points away?
July 14, 2019

Colour-light signals that are not in use (just set up but not yet commissioned, or in the process of being decommissioned) are often turned to point away from the tracks, so that it is clear to all locomotive drivers that the signal is not in service. Otherwise, it would be treated as an active signal that is malfunctioning (lamps burnt out),

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