Explanation
JSON objects are used to represent data in JSON format, consisting of key-value pairs that can contain strings, numbers, booleans, arrays, or objects. They are commonly used in web and mobile applications to represent complex data structures.
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📚 Related Concepts
- (a) List down any four key characteristics of Light Rail Transit System (LRT).
- (b) Define :
- (i) Ruling gradient (ii) Pusher gradient (iii) Momentum gradient (iv) Grade compensation on curves
- (c) What is meant by interlocking of signals and points? List down any three essential regulations.
- (d) Describe the operation of centralized train control system (CTC).