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Question

Which computer application category is most crucial for designing complex physical objects like cars, buildings, and machinery before they are built?

This question was previously asked in
RRB NTPC 2025 Under Graduate CBT 1 Question Paper PDF (20-Jun-2026) (Shift 3)
The correct answer is

Computer-Aided Design (CAD)

Computer-Aided Design (CAD) software is used by engineers, architects and designers to create precise two-dimensional and three-dimensional models of physical objects.

Using CAD, complex products such as cars, buildings and machinery can be designed, tested and refined digitally before they are actually manufactured or constructed.

Simulation software analyses behaviour, data management systems handle information, and presentation software creates slides, none of which are meant for detailed design drawings.

Hence, the most crucial category for designing complex physical objects is Computer-Aided Design (CAD).

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