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Questions in engineering

[Free] Write a slogan to encourage the usage of EVs.

[Free] Electrical protective gloves shall be subjected to periodic electrical testing. A. Every 6 months B. Every 3 months C. Every 12 months D. Every 9 months

[Free] 4. Propellers created during World War I were used to make the first wind turbines, which generated electricity rather than milling grain or pumping water. a. True b. False 5. Most modern wind turbines make use of aerodynamic lift. a. True b. False

[Free] Which of the following is NOT a characteristic of the gasoline particulate filter system? A. The particulate must be manually cleaned every five thousand miles B. May be separate from the catalytic converter C. Designed to capture exhaust gas particulates in the exhaust system D. May be combined with the catalytic converter

[Free] The best turbines today capture a. at least 75% b. approximately 25% c. no more than 33% d. more than 50% of the wind's power.

[Free] 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.

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

[Free] 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

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

[Free] 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]