Master Engineering with Fun Quizzes & Brain Teasers!

How do you reboot your router?
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What are the steps to configure your router in order?
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At the operations level of industrial internet what is not critical
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Which of the following types of cables might be used to run from cubicles into a drop ceiling and then routed across to an IDF?a. SCADAb. plenumc. backboned. EMI
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How is symmetry related to rigid transformations?
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What are the 5 common hazards?
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Carolina wants to determine which services are running on the Linux servers in a certain subnet. Which of the following tools would best perform this task?a. nmapb. ifconfigc. telnetd. ping
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The tailstocka. is used to mount the lathe centerb. cannot be used for taper turningC. is removed when long work must be turnedD. holds the inner end of the work being turned
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definition of environment in design and technology
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A milling machine can do all of the following tasks exceptA. machine flat and contoured surfacesb. rotate a multitoothed cutter into the workpiece to remove materialc. machine threads, gears, and spiralsd. ream a highly accurate hole with a fine finish
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A student is asked to build a model of an atom with 6 protons and 6 electrons. The student is then asked to make an identical model of the same arom but make it an ion. Ro be successful in this project, the student will:
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Please answer thank you!
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A. A solidified lava flow containing zircon mineral crystals is present in a sequence of rock layers that are exposed in a hillside.A mass spectrometer analysis was used to count the atoms of uranium-235 and lead-207 isotopes in zircon samples from thelava flow. The analysis revealed that 71% of the atoms were uranium-235, and 29% of the atoms were lead-207. Refer toFIGURE 8.11 to help you answer the following questions.1. About how many half-lives of the uranium-235to lead-207 decay pair have elapsed in the zircon crystals? ______________2. What is the absolute age of the lava flow based onits zircon crystals? Show your calculations.3. What is the age of the rocklayers above the lava flow? _______________4. What is the age of the rocklayers beneath the lava flow? _______________B. Astronomers think that Earth probably formed at the same time as
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42. A vehicle has sagged rear springs and reduced rear curb riding height. This problem resultsin?A. Excessive positive camber on the front wheelsB. Excessive toe-out on the front wheelsC. Excessive positive caster on the front wheelsD. Excessive toe-in on the front wheels43. On a vehicle equipped with rear parallel leaf springs and a solid rear axle, customer iscomplaining that the vehicle reacts erratically (it darts) during turns. What is the most likelycause of this complaint?A. Incorrect ride heightB. Incorrect driveline angleC. Loose rear axle U-boltsD. Missing jounce/rebound bumpers44. A power steering pump is being tested with a pressure gauge for maximum output pressure.Which of the following statements is correct?A. The pressure gauge should be attached to the pump return portB. The steering wheel should be held in the right lock positionC. A maximum output pressure dead heading test should last no longer than 5 secondsD. One should check output pressure with engine speed above 4000rpm
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Consider a sphere made of stainless steel with diameter of 25 cm. It is heated to temperature of 300C for some chemical tests. After finishing the tests, the sphere is cooled by exposing it to a flow of air at 1 atm pressure and 25C with a velocity of 3 m/s. By the end of cooling process, the sphere's temperature drops to 200C. The rate of heat transfer loss due to convection is closest to:__________. a) 485 W b) 513 W c) 88 W d) 611 w
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An application demands that a sinusoidal pressure variation of 250 Hz be measured with no more than 2% dynamic error. In selecting a suitable pressure transducer from a vendor catalog, you note that a desirable line of transducers has a fixed natural frequency of 600 Hz but that you have a choice of transducer damping ratios of between 0.5 and 1.5 in increments of 0.05. Select a suitable transducer.
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. (20 pts) A horizontal cylindrical pipe (k = 10 W/mK) has an outer diameter of 15 cm and a wall thickness of 5 cm. The pipe is situated in a stationary air, where the air and surrounding temperature is 27C. The outer surface temperature of the pipe is 127C, and the pipe surface has an emissivity of 0.5. Determine the inner surface temperature of the pipe. Use the following air properties for the analysis: k = 0.03 W/mK, = 20.92 106 m2 /s, = 29.90 106 m2 /s, Pr = 0.70
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Two transmission belts pass over a double-sheaved pulley that is attached to an axle supported by bearings at A and D. The radius of the inner sheave is 125 mm and the radius of the outer sheave is 250 mm. Knowing that when the system is at rest, the tension is 100 N in both portions of belt B and 160 N in both portions of belt C, determine the reactions at A and D. Assume that the bearing at D does not exert any axial thrust.
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A heat engine operates between 2 reservoirs at TH and 18oC. The heat engine receives 17,000 kJ/h from the high temperature reservoir, and delivers half of its power output to drive a Carnot heat pump. The Carnot heat pump removes heat from the cold surroundings at 0oC and transfers it to a house which is maintained at 24oC. If the house is losing heat at a rate of 80,000 kJ/h, determine the temperature TH of the heat engine reservoir.
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A 50-cm x 50-cm circuit board that contains 121 square chips on one side is to be cooled by combined natural convection and radiation by mounting it on a vertical surface in a room at 25 C. Each chip dissipates 0.18 W of power, and the emissivity of the chip surfaces is 0.7. Assuming the heat transfer from the back side of the circuit board to be negligible, and the temperature of the surrounding surfaces to be the same as the air temperature of the room, determine the surface temperature of the chips. Evaluate air properties at a film temperature of 30 C and 1 atm pressure. Is this a good assumption?
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If you are setting up a race car. What is the cross weight? Does it matter?
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A Newtonian liquid flows in the annular space between to fixed horizontal concentric cylinders. The radius of the inner cylinder is ri and the outer cylinder is ro. Two static pressure taps separated by a distance L along the outer pipe are connected to a manometer with reading of h. Develop an expression for the shear stress on the inner and outer cylinder walls as a function of h. Assume the flow is fully developed and laminar.
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what are the four essential components of a UAS?
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Consider flow in between two parallel plates located a distance H from each other. Fluid flow is driven by the bottom plate moving to the right with a velocity of U (note, NO pressure gradient). The top plate has a fixed temperature of TT and the bottom plate has a temperature of Tb. Starting with the governing equations for incompressible flow, find the velocity profile and the temperature profile for the flow in between the plates. In addition, what is an expression for the heat flux at the bottom plate (assuming a thermal conductivity of k)
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