Railways PYQCBT 2 2017

RRB NTPC · Question 88

Which of the following is a device designed to protect electrical devices from voltage spikes?

  1. Voltage unloader

  2. Surge protector

  3. Heat protector

  4. Current unloader

Show answer & explanation

Answer: (B) Surge protector

Explanation

A surge protector diverts sudden voltage spikes (from lightning or switching) to earth, protecting the electrical devices plugged into it.