Ultimate Engineering Study Guide - Questions & Answers

An engineering part is made of 2014-T6 aluminum. A cyclic loading is applied on this part. The loading rate is 1 cycle/min. The cyclic stress applied to this part is 200 MN/m2. How many minutes this part might take to resist this cyclic loading before failure
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If stage one of a cascaded amplifier system has a decibel voltage gain of 30 and stage two has a decibel voltage gain of 40, what is the total decibel voltage gain
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Values of specific enthalpy h of an Argon plasma in equilibrium as a function of temperature are given by:T(K) 5000 7500 10000 12500 15000 17500 20000 h (MJ/kg) 3.3 7.5 41.8 51.8 61 101.1 132.9 T(K) 22500 25000 27500 30000 h (MJ/kg) 145.5 171.4 225.8 260.9Required:Determine the cubic spline interpolating function for this data using a builtin function in Matlab, Python, or Mathematica.
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The fraction of nonreflected radiation that is transmitted through a 10-mm thickness of a transparent material is 0.90. If the thickness is increased to 32 mm, what fraction of light will be transmitted
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A stirred-tank blending system initially is full of water and is being fed pure water at a constant flow rate, q. At a particular time, an operator shuts off the pure water flow and adds caustic solution at the same volumetric rate q but with concentration ci. If the liquid volume is constant, the dynamic model for this process is
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_____________ architecture utilizes processes of designing, construction, operation, maintenance, and removal that have been carefully planned to have the smallest footprint. a. Conventional c. Environmental b. Standard d. Green
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Select all true statements regarding the strength of nails in wood connections. a. The nail strength is the same in tension and shear b. The nail strength depends on the specific gravity of the connected members c. The nail strength depends on the diameter of the nail d. The nail strength depends on the thickness of the side member
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Consider an air conditioner running with R-134a on a cycle executed under the saturation dome between the pressure limits of 0.8 MPa and 0.12 MPa. (The statement that the process takes place under the saturation dome means that the working fluid is always in the two phase (saturated gas/liquid mixture) region.) What is the maximum Coefficient of Performance of this air conditioner
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A turbojet aircraft is flying with a velocity of 210 m/s at an altitude of 9150 m, where the ambient conditions are 20 kPa and 210 K. Air enters the diffuser first, exits with a negligible velocity to the compressor. The pressure ratio across the compressor is 8 and air enters at a rate of 40 kg/s. Then it is mixed with fuel in the combustion chamber, where the mixture is burned at constant pressure, then enters the turbine. The temperature at the turbine inlet is 1020 K. Finally, the gases expand in a nozzle to the ambient pressure and leave the engine at a high velocity. Assuming ideal operation for all components and constant specific heats for air at room temperature, Determine the following.:a. Air temperature at the diffuser exit.b. Air pressure at the diffuser exitc. Air pressure at the compressor exitd. Air temperature at the compressor exit
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A new interstate highway is being built with a design speed of 70 mph. For one of the horizontal curves, the radius measured to the innermost travel lanes is 900 ft. Determine the rate of superelevation required for the curve.
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Air at 508C, 1 atm and a volumetric flow rate of 60 m3 / min enters an insulated control volume operating at steady state and mixes with helium entering as a separate stream at 1208C, 1 atm and a volumetric flow rate of 25 m3 /min. A single mixed stream exits at 1 atm. Ignoring kinetic and potential energy effects, determine for the control volume (a) the temperature of the exiting mixture, in 8C. (b) the rate of entropy production, in kW/K. (c) the rate of exergy destruction, in kW, for T0 5 295 K
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Quotient rule of sin3x.se X/3
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Acquisition of resources from an external source is called?
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C. Answer with solution.You went on a car trip to a town in Moalboal, Cebu. it took you three hours to cover a distance of 78 kilometers.What was your average speed?_____________________
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Which one of the following is not an economic want?
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Shane's 100-watt radio draws 7 amps of current on a 120-volt circuit. What is the resistance in the radio?
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Consider the following two-dimensional velocity field V = (u,v) u = 3x+c1y v= x + c2yWhere c1 and c2 are coffients.Required:a. Determine all stagnation points. b. Determine the coefficients C1, C2 such that the flow is a potential flow. c. For the values of the coefficients calculated at point (b), determine the expression of the stream function. d. For the values of the coefficients calculated at point (b), considering a temperature field T = 2x + 3y, determine the value of (v.v)T at the point (x,y) = (1,2)
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For each of the following stacking sequences found in FCC metals, cite the type of planar defect that exists:a. . . . A B C A B C B A C B A . . . b. . . . A B C A B C B C A B C . . . Copy the stacking sequences and indicate the position(s) of planar defect(s) with a vertical dashed line.
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a15. What is the preferred repair for 4130 steel tube that maybe visible or adjacent to the fabric covering?
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Write a short summary, at least 5 paragraphs regarding the areas that you think Fluid Mechanics is the governing science to describe the phenomena and explain in details your understanding of means of applicability.
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Do you see many connections between the work that dispatchers, harbor pilots, yardmasters, and air traffic controllersdo? Why or why not? Explain why you think their salaries vary so much.
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If there are 16 signal combinations (states) and a baud rate (number of signals/second) of 8000/second, how many bps could I send
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An operator decided to develop a subsea drill center of 4 oil wells. The production from the drill center is to be transported to a receiving facility by a single pipeline. What do you recommend the operator to install for production commingling from the 4 wells,
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After impact testing a sample at -100oC you realize that the fracture surface is very dull and fibrous. Is the sample behaving in a ductile of brittle manner at this temperature
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