Engineering

When you arrive at an intersection with a stop sign in your direction, if there is no marked stopline, you mustA: Stop within 10 feet of the intersecting roadway, on top of the pedestrian crosswalk if there is one.B: Wait for pedestrians in the crosswalk to cross, then stop on the pedestrian crosswalk.C: Stop before entering the pedestrian crosswalk.
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Assume that the heat is transferred from the cold reservoir to the hot reservoir contrary to the Clausis statement of the second law. Prove that this violates the increase of entropy principleas it should according to Clausius.
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A 400 kg machine is placed at the mid-span of a 3.2-m simply supported steel (E = 200 x 10^9 N/m^2) beam. The machine is observed to vibrate with a natural frequency of 9.3 HZ. What is the moment of inertia of the beam's cross section about its neutral axis?
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As the asteroid falls closer to the Earth's surface its _______ energy decreases and its _______ energy increases.
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Strain gage is a device that senses the strain of the structure. The property of the strain gage that is used to correlate with the strain to be measured is
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what scale model proves the initial concept?
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A cruise missile under test is moving horizontally at Ma =2 in the atmosphere at an elevation of 2000 m (Air temperature is 2 C). Determine the half-angle "alpha" of the Mach cone.
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Q1) Determine the force in each member of thetruss and state if the members are in tension orcompression. Set P1 = 10 kN, P2=15 KN
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Tech A says never disconnect sensors before conducting resistance checks. Tech B says automotive test lamps should not be used on digital circuits because they draw too much current and can overload the circuit. Who is correct?
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Suppose that the resistors in the various circuit diagrams represented the resistances of lightbulbs. When a lightbulb "burns out," the circuit is open through that particular component, that is R is infinite. Would the remaining bulbs continue to burn?
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Which element refers to musically depicting the emotion in the words of a musical piece?A intellectual movement of humanismB. word paintingC. balancing the usage of rhythm and tone colorD. combining lyrics and rhythm in a motet
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The cold drawn AISI 1040 steel bar with 25-mm width and 10-mm thick has a 6- mm diameter thru hole in the center of the plate. The plate is subjected to a completely reversed axial load that fluctuates from 12kN to 28kN. Use notch sensitivity of 0.83.Required:a. Estimate the fatigue factor of safety based on yielding criteria. b. Estimate the fatigue factor of safety based on Goodman and Morrow criteria.
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Technician A says that when the malfunction indicator light or service engine light is on you should retrieve the diagnostic trouble code and follow the manufacturers recommended procedure. Technician B says that all obd-ll monitors must have the enabled criteria achieved before a test is performed. Who is correct?
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A step-up transformer has an input voltage of 110 V (rms). There are 100 turns on the primary and 1500 turns on the secondary. What is the output voltage?
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Water discharging into a 10-m-wide rectangular horizontal channel from a sluice gate is observed to have undergone a hydraulic jump. The flow depth and velocity before the jump are 0.8m and 7m/s, respectively. Determine (a) the flow depth and the Froude number after the jump (b) the head loss (c) the dissipation ratio.
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a steal bar with 1 in diameter has been subjected to a tensile force of 3 tons find tensile stress in the bar
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if you experience brake failure...
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A two-lane, one-way ramp from an urban expressway with a design speed of 30 mi/h connects with a local road at a T-intersection. The turning roadway has a vertical curb on both sides. Determine the width of the turning roadway if the predominant turning vehicles are single unit trucks with some semi-trailers. Use 0.08 for super-elevation if applicable.
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Air at 30 C, 1 bar, 50% relative humidity enters an insulated chamber operating at steady state with a mass flow rate of 3 kg/min and mixes with a saturated moist air stream entering at 5 C, 1 bar with a mass flow rate of 5 kg/min. A single mixed stream exits at 1 bar. Determine (a) the relative humidity and temperature, in C, of the exiting stream. (b) the rate of exergy destruction, in kW, for T0
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The magnitude of the normal acceleration is A) proportional to radius of curvature. B) inversely proportional to radius of curvature. C) sometimes negative. D) zero when velocity is constant.
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HELPPPP. How many engineers are there in u.s?
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A cylinder is to be cast out of aluminum. The diameter of the disk is 500 mm and its thickness is 20 mm. The mold constant 2.0 sec/mm2 in Chvorinov's formula to calculate the solidification time. Required:a. Calculate the minimum time (minutes) for the casting to solidify. b. Discuss if the result in part (a) is the same when casting grey cast iron.
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The plate is made of steel having a density of 7910 kg/m3 .If the thickness of the plate is 9 mm , determine the horizontal and vertical components of reaction at the pin A and the tension in cable BC.
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In general, MOSFET'S:___________. A) are mostly used in switching circuits B) can be fabricated in much higher densities than BJT'S C) produce simpler circuits than BJTS D) all of the above
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