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Question

In a climate-controlled laboratory where aesthetics and minimal electromagnetic interference are priorities, which wiring system is most appropriate?

This question was previously asked in
RRB NTPC 2025 Graduate Level CBT 1 Question Paper (25-Mar-2026) (Shift 3)
The correct answer is

Concealed conduit wiring with non-magnetic pipes

In a climate-controlled laboratory, where aesthetics and minimal electromagnetic interference are important, selecting the right wiring system is crucial for maintaining both functionality and appearance. Let's evaluate the options provided:

  1. Cleat wiring with ceramic cleats: This is a temporary wiring system that is not aesthetically pleasing as it involves open wires and is typically used for indoor wiring but not recommended for areas where appearance or interference minimization is a priority.
  2. Batten wiring with wooden battens: While neat, this type is not the best for environments needing minimized electromagnetic interference, as the wires are not enclosed as tightly as in conduit systems.
  3. Casing-capping wiring with plastic covers: Although providing a cleaner look than cleat or batten wiring, it is not the best at minimizing electromagnetic interference compared to conduit systems since it involves plastic casing that might not offer the required protection.
  4. Concealed conduit wiring with non-magnetic pipes: This method entails running wires through non-magnetic pipes that are concealed within walls. This greatly enhances the aesthetics by hiding the wires and minimizes electromagnetic interference due to the enclosed structure, making it the most suitable choice for climate-controlled laboratories.

Given the requirements for both aesthetics and minimized electromagnetic interference, concealed conduit wiring with non-magnetic pipes stands out as the most appropriate choice. This system effectively hides the wiring within walls, maintaining a clean and professional appearance, while the conduits used—being non-magnetic—ensure that electromagnetic interference is kept to a minimum. Hence, it aligns perfectly with the priorities of such specialized environments.

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