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Questions in engineering

[Terjawab] Moderate wind speeds: a. at least 5 b. gusting up to 30 c. in the range of 10-40 d. sustained at 40 mph provide suitable power without overfatiguing components.

[Terjawab] Excavation must be __________ when approaching the facilities. A. Mechanically B. Manually C. Both of them D. None of them

[Terjawab] Activity: Casting Off With Wind or Current Toward the Dock Which line(s) should you cast off first? The wind/current direction is toward the dock A. the bow line B. the stern line C. the draft line D. both the bow and stern lines E. both the bow and draft lines

[Terjawab] To tighten or loosen fasteners with a star-shaped indent in the head, a(n) _____ wrench is used.

[Terjawab] Which type of refrigeration system has multiple compressors and multiple evaporators, all working together? A. Double door reach-in coolers and freezers B. Rack refrigeration system C. Walk-in cooler-freezer combo D. Transport refrigeration systems

[Terjawab] Determine [tex]$e^{-1}{F}$[/tex]. [tex]$F(s)=\frac{4 s^3-9 s^2-s+9}{s^3(s-9)}$[/tex]

[Terjawab] Use the formula [tex]$£\left\{t^n f(t)\right\}(s)=(-1)^n \frac{d^n}{d s^n}( L \{f(s))$[/tex] to help determine the following the expressions. (a) [tex]$L \{t \cos bt\}$[/tex] (b) [tex]$E \left\{t^2 \cos b t\right\}$[/tex] Click here to view the table of Laplace transforms. (a) [tex]$L \{ t \cos bt \}( s )=$[/tex] $\square$

[Terjawab] What is the normal time delay in an oil safety control before it trips? A. 10 seconds B. 30 seconds C. 120 seconds D. 60 seconds

[Terjawab] What are common hazards in confined spaces? Select all that apply. Chemical Biological Moving equipment Engulfment Electrocution

[Terjawab] A toggle bolt is a good choice for A. bolting a chiller to the floor. B. mounting a safety warning sign. C. securing a blower wheel on a shaft. D. installing a compressor cylinder head.