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Questions in engineering

[Done] What is a hazard associated with electric tools? A. The operator overusing a low battery B. The operator using the tool at excessive speeds C. The operator experiencing burns or shock D. The operator carrying or dropping a tool in a way that it may inadvertently turn on

[Done] Which type of knot comes loose as soon as tension is removed from the rope? A. Half hitch B. Bowline C. Square knot D. Clove hitch

[Done] A properly prepared connecting area should be: a. Slightly larger than the wire b. On the bottom and centered on the pipe c. Moist and dull d. On the top and centered on the pipe

[Done] In which of the following environments would you find a commercial electrician at work? A. petrochemical plant B. shipyard C. office building D. tract home construction

[Done] Scenario: You're a tool and die maker assigned to change out the die in a mechanical power press. Does this task require full LOTO of the equipment, or does LOTO minor servicing exception apply?

[Done] (c) Two uniform line charges L1 and L2 of density [tex]$8.854 nC / m$[/tex] each located in space along the plane [tex]$Z =0$[/tex] at [tex]$y =+6$[/tex] and [tex]$y =-6$[/tex] m respectively. At point [tex]$P (0,0,6)$[/tex], determine the: (i) electric field strength due to line 1 ; (ii) electric field strength due to line 2; (iii) total field strength.

[Done] Where does the purge unit on a centrifugal system take its suction? A. Top of the condenser B. Compressor oil sump C. Top of the evaporator D. Suction elbow

[Done] An aquifer was located at a certain place, and the area of the zone 900km² is bounded by a confined aquifer of 20m thickness. The average minimum and maximum piezometric levels variations range between 4m to 10m. Hence, compute the annual rechargeable groundwater storage from this area and the average well yields if the area consists of 40 wells, each pumping water for irrigation for about 200 days in a year.

[Done] Why should your ladder extend at least 3 feet above the working surface? A. To increase the ladder's weight capacity B. To prevent the ladder from tipping backward C. To provide a stable space to step to the work surface D. To allow the ladder to be used at greater heights

[Done] Select the best answer for the question. 7. One basic rule a technician must follow while searching for a leak is to A. have patience. B. start by injecting a sealing compound into the system. C. use one leak method and move on. D. work quickly before the leak disappears.