Full access allows:
- Solve all tests online without limits;
- Remove all advertisements on website;
- Adding questions to favorite list;
- Save learning progress;
- Save results of practice exams;
- Watching all wrong answered questions.
- Homepage »
- Assistant Engineer (Motor Plants (OSV)) »
- Q654 - Electrical, Electronic, & Control Engineering
158. Which pair of safety disconnect switches shown in the illustration represents the exterior and interior views of a double-throw switch
Choice B is correct; double-throw switches have two ON positions and two sets of internal contacts. View D shows an ON-OFF-ON handle, and view B displays the corresponding internal mechanism with two distinct contact sets.
Comments (0)
There are no comments at the moment. If you found an error or think question is incorrect, tell everyone about it
Only signed in users can write comments
Signin