NEC License Questions
Prepare for electrical licensing and technical interviews with short electrical MCQs and answer explanations.
Popular search topics
Searchable question pages
Approved public questions with clean URLs, answer options, and explanation pages.
In order to calculate heat input, it is necessary to know
In order to calculate heat input, it is necessary to know
Open 2In mechanical testing, the term necking is used when
In mechanical testing, the term necking is used when
Open 3Who or what determines the necessity of a post weld heat treatment?
Who or what determines the necessity of a post weld heat treatment?
Open 4What is a duty cycle?
What is a duty cycle?
Open 5Which process uses a constant current electrical characteristic?
Which process uses a constant current electrical characteristic?
Open 6Is it always necessary to preheat the base material before welding?
Is it always necessary to preheat the base material before welding?
Open 7Who is responsible for site safety?
Who is responsible for site safety?
Open 8Why is it sometimes necessary to preheat the base material before welding?
Why is it sometimes necessary to preheat the base material before welding?
Open 9Why is it sometimes necessary to preheat the base material before welding?
Why is it sometimes necessary to preheat the base material before welding?
Open 10Who is responsible for site safety?
Who is responsible for site safety?
Open 11When measuring arc voltage where should the measuring instrument be connected?
When measuring arc voltage where should the measuring instrument be connected?
Open