21. Which of the following is a device designed to protect electrical devices from voltage spikes? A.Voltage unloader B.Surge protector C.Heat protector D.Current unloader
Option B Solution: Surge Protection Device (or surge suppressor or surge diverter) is an appliance or device designed to protect electrical devices from voltage spikes. A surge protector attempts to limit the voltage supplied to an electric device by either blocking or shorting to ground any unwanted voltages above a safe threshold.
