HRS - Ask. Learn. Share Knowledge. Logo

Questions in engineering

[Done] An enclosure that includes transformers, circuit breakers, buses, and other components involved in the transmission and distribution of electricity is known as a A. raceway system B. on-the-job learning (OJL) C. trim-out D. rough-in E. electrical service F. substation G. occupational safety and health administration (OSHA)

[Done] One who has demonstrated the skills and knowledge related to the construction and operation of the electrical equipment and installations and has received safety training to identify and avoid the hazards involved is known as a: A. Polychlorinated biphenyls (PCBs) B. Error precursors C. Grounded tool D. Double-insulated/ungrounded tools E. Qualified person F. Fibrillation G. Ground fault circuit interrupter (GFCI)

[Done] Which of these should you ask yourself while you’re identifying a problem?

[Done] No more than how many mV difference should be between an Unknown Condition and a Known Good reference electrode? A. 2.5 mV B. 5 mV C. 10 mV D. 10.5 mV

[Done] Which protective device protects against overcurrent situations and can be reset? A. Circuit breaker B. Ground-fault circuit-interrupter and disconnect all C. Fuse D. All of the above

[Done] Why is it important to have an emergency rescue plan at an excavation site? A. To increase work speed in the confined space B. To plan what to do before an accident C. To reduce project costs D. To document the different chemicals in use

[Done] Select the best answer for the question. What is the internal heat gain, in kW, from a factory with 20 kW of lighting (surface-mounted), 10 kW of running motors, and 10 people doing light benchwork? A. 23.8 B. 178 C. 208 D. 20

[Done] When performing a system ON test, you get a pipe-to-soil potential reading of -870 millivolts. Which statement is TRUE? A. The protection area is too large for the anodes provided B. The anodes are depleted or were never connected C. Your voltmeter is probably defective D. This is a good reading

[Done] Which type of force do tools for threaded fasteners apply? POSSIBLE ANSWERS A. Pushing B. Pulling C. Rotational D. Linear

[Done] Typically, when performing a close interval potential survey, pipe-to-soil potential readings are taken: a. No more than 30 feet from the test station b. Every 2.5 to 5 feet along the pipeline's length c. On only 1% of the pipeline's entire length d. Every 100 feet along the pipeline's length