A
To supply electric power to traction locomotives
B
To provide backup diesel power during system failures
C
To store excess regenerative braking energy for station lighting
D
To transmit real-time signaling data to train control rooms
Correct answer: (a) To supply electric power to traction locomotives
Explanation
Option A is correct because OHE refers to the overhead wiring network supplying electric power to traction locomotives. Options B, C, and D misstate the core electrical and traction purpose of the overhead equipment network.
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