Fuses quiz

A fuse is an electrical safety device that operates to provide ___________ protection of an electric circuit.

• overcurrent

• undercurrent

• devices

• mechanical

There are ______________ of different fuse designs which have specific current and voltage ratings, breaking capacity, and response times, depending on the application.

• millions

• hundreds

• thousands

_________ can prevent short circuiting, overloading, mismatched loads, or device failure which are the prime or some of the reasons for fuse operation.

• Machines

• Fuses

• Wires

• Switches

What is a sacrificial device ?

• a device that can only be used once

• a device that breaks fast

Fuses are made of that melts when too much current flows through it, thereby stopping or interrupting the current.

• liquids

• metals

• wires

Which of these are real fuses ?

• DC Fuses

• AC Fuses

• D - type cartridge fuses

Is an fuse or MCB better ?

• Fuse

• MCB

Do MCBs switch off automatically ?

• yes

• no

Do MCBs switch on automatically ?

• yes

• no

The time and current operating characteristics of ______ are chosen to provide adequate protection without needless interruption.