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Questions in engineering

[Free] Which of these factors may increase the risk of a cave-in? A. Lack of vibration B. Changes in weather C. Soil that has never been dug before D. Piling soil away from the excavation

[Free] Frost depth in Oklahoma is at 4 foot below grade. True or False?

[Free] Which of the following is a key element of eye and face protection training? A. How to properly put on and remove eye and face protection B. What eye and face protection is necessary and exactly how to use it C. How to properly inspect, care for, and maintain eye and face protection D. All of these choices are correct

[Free] Which type of protective system involves cutting back the trench wall at an angle that is inclined away from the excavation? A. Sloping B. Benching C. Shoring D. Shielding

[Free] Organic soils can be used under slabs and foundations. True or False

[Free] You are deciding how to dock your boat. Which of these is the most important factor to consider? A. location of cleats on the dock B. strength of the wind or current C. position of your boat fenders D. length of your docking lines

[Free] Clays should not ever be used for construction. A. True B. False

[Free] What is the main function of an engine cut-off switch?

[Free] Determine the inverse $z$-transform of $\frac{1+z^{-1}}{1-z^{-1}+0.5 z^{-2}}$. Is this a proper fraction?

[Free] Grading or excavation may include soil remediation like mixing flyash. A. True B. False