IGNOU BFO 4 2025 - What is moving stairs? Briefly describe the functions of escalator.

Question

What is moving stairs? Briefly describe the functions of escalator.

13 May 2026

Answer :

Word Count : 383

Moving stairs is a mechanical transportation device commonly known as an escalator. It is a continuously moving staircase designed to carry people between different levels of a building or structure. It consists of a motor-driven chain of individual, linked steps that move up or down on tracks while remaining horizontal. The steps rotate in a loop system, guided by tracks inside a truss, and handrails move in synchronization with the steps for passenger support and safety. Moving stairs are widely used in places where

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