ASIS International (ASIS) Professional Certified Investigator Practice Exam

Which of the following is NOT a characteristic of a common fuse?

1. Used to start a fire or explosion

2. Generally made of flammable materials

3. Creates a constant spark

4. Can be triggered electronically

The correct answer is: Creates a constant spark

The correct answer highlights that a common fuse does not create a constant spark. Fuses are typically designed to provide a controlled and certain timing mechanism for the delay of an ignition event, but they are not meant to produce a continuous spark. Instead, they may produce a series of sparks or an ignition flash when ignited and are engineered to initiate a reaction within a specific timeframe. Other characteristics of a common fuse include being made from flammable materials to sustain combustion and providing a means to trigger an explosive event, as well as the potential for electronic triggering in some designs. The contrasts between these functions and the nature of a fuse clarify why creating a constant spark does not align with its operational characteristics.