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Questions in engineering

[Answered] 4. Which of the following foams is best suited for direct attack? A. wet foams B. semi-wet foams C. fluid foams D. dry foams 5. Class A fires typically will require which type of foam? A. Low expansion foam B. Mid expansion foam C. High expansion foam D. Super expansive foam 6. Which of the following is not a disadvantage of using a compressed air foam system? A. Compressed air foam systems are expensive to purchase and maintain. B. Hose reaction can be significant. C. Hoselines are lighter than those full of water or foam solution. D. Use of compressed air foam systems require additional training for firefighters and apparatus drivers/operators. 7. The foam type with a small bubble size, fast drain time, and is suitable for initial fire suppression, overhaul, and penetration into deep-seated fires is A. dry foam.

[Answered] The transaxle assembly combines the ______ and ______. Options: 1. differential, axle 2. torque converter, differential 3. transmission, axle 4. transmission, differential

[Answered] What leak detection method is used to pinpoint the exact location of a refrigerant leak? A. Electronic leak detector B. Ultrasonic leak detector C. Halide torch leak detector D. Soap bubble solution

[Answered] Which part of the turbocharger houses the shaft bearings and seals? A. Center housing B. Compressor C. Turboshaft D. Compressor housing

[Answered] Determine [tex]L ^{-1}{F}[/tex]. [tex]s F(s)-F(s)=\frac{4 s+5}{s^2+2 s+1}[/tex] Click here to view the table of Laplace transforms. Click here to view the table of properties of Laplace transforms. [tex]L ^{-1}{F}=\square[/tex]

[Answered] What component may be at fault if the compressor cycles on and off during pump-down? A. Defrost timer B. Pump-down solenoid C. Oil regulator D. Filter drier

[Answered] Which of the following statements is true regarding modes of operation in vehicles featuring eAWD? A. They have either a transfer case or power transfer unit (PTU). B. They have independent electric drive transmissions. C. The transmission may feature one or two drive motors. D. Both B and C.

[Answered] Determine [tex]L^{-1}\left\{F\right\}[/tex]. [tex]F(s)=\frac{4 s^2+84 s+336}{(s-2)\left(s^2+12 s+37\right)}[/tex] Click here to view the table of Laplace transforms. Click here to view the table of properties of Laplace transforms. [tex]L^{-1}\left\{F\right\}=\square[/tex]

[Answered] 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.

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