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Question

What is the recommended action before replacing a fuse?

This question was previously asked in
RRB NTPC 2024 Undergraduate CBT 1 Question Paper (29-Aug-2025) (Shift 1)
The correct answer is

Switch off circuit.

The correct answer is to switch off the circuit before replacing a fuse.

Replacing a fuse involves working with electricity, which can be extremely dangerous. Before attempting any work on an electrical circuit, the first and most crucial step is to ensure the power is completely disconnected. This prevents the risk of electric shock, which can cause serious injury or even death.

The other options are incorrect and irrelevant to safely replacing a fuse. Wearing a safety belt or standing on a stool are not related to electrical safety. While rubber gloves offer some level of protection against electrical shock, they are not a substitute for turning off the power supply. The primary safety precaution is always to isolate the power source completely.

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