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Questions in engineering

[Free] Common sill problems include all of the following except: A. sagging B. rot C. crushing D. poor anchoring E. gaps under sills

[Free] Carolyn is charging a system that has a fixed-restriction metering device. She has decided to use the superheat method. Using the chart, she knows that the indoor wet-bulb temperature is 66 degrees Fahrenheit and that the outdoor ambient temperature is 90 degrees Fahrenheit. What's the required superheat? | Indoor WB | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | |---|---|---|---|---|---|---|---|---|---|---|---| | 50 | 9 | 7 | | | | | | | | | | | 52 | 12 | 10 | 6 | | | | | | | | | | 54 | 14 | 12 | 10 | 7 | | | | | | | | | 56 | 17 | 15 | 14 | 10 | 6 | | | | | | | | 58 | 20 | 18 | 16 | 13 | 9 | 5 | | | | | | | 60 | 23 | 21 | 19 | 16 | 12 | 8 | 6 | | | | | | 62 | 26 | 24 | 22 | 19 | 16 | 12 | 8 | 5 | | | |

[Free] Floor structures may experience what kinds of loads? A. Live and dead loads B. Compression loads C. Live loads only D. Horizontal loads only E. Vertical loads only

[Free] To avoid crashing, you can use: a) Evasive steering b) Evasive braking c) Evasive acceleration d) All of the above

[Free] Janice prefers to use a thermocouple temperature sensor to test equipment. How is this type of sensor different from others? A. It can be used to detect temperatures displayed on both analog and digital instruments. B. It's especially useful in measuring pipe temperatures. C. It's highly accurate. D. It's inexpensive and can be carried inside a shirt pocket.

[Free] Why does water gush out of a joint connecting the CPVC pipe for a water heater? A. The drain line was backed up. B. The wrong kind of solvent was used. C. The pipe got too hot. D. The wrong type of heater was used.

[Free] The tires on Don's tridem axle trailer are 285 mm wide. What is the maximum weight his trailer tires can support (the trailer uses duals on each axle)? A. 17100 kg B. 34200 kg C. 51300 kg

[Free] Use the Laplace transform to solve the given initial-value problem. [tex]y^{\prime \prime}-5 y^{\prime}=8 e^{4 t}-4 e^{-t}, \quad y(0)=1, y^{\prime}(0)=-1[/tex] [tex]y(t)=[/tex]

[Free] Where do all the contaminants and moisture removed from a refrigeration system end up? A. Rotary pump B. Pressure gauge C. Vacuum pump D. U-tube manometer

[Free] Which of the following is appropriate when using an electronic vacuum gauge? A. Ensuring a sustained vacuum of at least 500 microns while using the vacuum gauge B. Installing the sensor horizontally to ensure contact with the system oil C. Allowing the vacuum pump to draw a vacuum of 475 microns HG before opening the valve D. Connecting the system directly to the sensor