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Questions in engineering

[Done] In what type of work environment is it unsafe to use a fuel powered chainsaw? A. In an area where there is a fire extinguisher close by B. In an area where you will stand on damp grass C. Inside a garage with the doors and windows closed D. In a wooded area

[Done] Select the best answer for the question. Which of the following describes predictive maintenance? A. Performing maintenance and testing based on a regular schedule B. Replacing all system components on a rotating basis C. Performing maintenance and testing whenever the system quits operating correctly D. Monitoring key performance indicators and performing maintenance when these indicators show a need for maintenance

[Done] What type of power lines typically work with Pad-Mounted Transformers? A. Overhead B. Interior C. Underground D. Exterior

[Done] At a minimum, how long should a fire watch remain in place after work is done to ensure no fire begins? A. 15 minutes B. 30 minutes C. 45 minutes D. 60 minutes

[Done] A RTK repeater should be used to extend the range of the RTK radio's signal. A. True B. False

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Done] To avoid the risk of an arc igniting gases or vapors, where must an arcing device be installed? A. All Exterior Locations B. All Ceiling Locations C. Special Enclosure D. All Interior Locations

[Done] An enclosure that houses conduit, boxes, and fittings in an electrical system is called a A. electrical service B. occupational safety and health administration (OSHA) C. on-the-job learning (OJL) D. rough-in E. trim-out F. raceway system G. substation

[Done] Interruption of a three-phase rectifier can only be accomplished by: A. Connecting the current interrupter across the rectifier's fine taps B. Interrupting the AC voltage as it comes out of the rectifier's transformer C. Interrupting the DC output of the rectifier D. Connecting the current interrupter in parallel with the rectifier's shunt

[Done] How often should the air quality be monitored in an excavation site? A. Once a day B. Once a week C. Once a month D. Continuously