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Engineering

Fisher Franco

5. Liquid lithium flows at 5 m/s in a 1 cm-I. D. tube. Calculate the Nusselt number and heat transfer coefficient. Evaluate the properties at 800 K. (liquid metal has very low Pr number. Review 4.3.1 for instructions). a. If the wall temperature is uniform b. If the wall heat flux is uniform

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Engineering

Luz Reeves

An inventor claims to have developed an engine that does not use fuel but operates as a power cycle at steady state while receiving energy by heat transfer from the surrounding atmosphere and discharging energy by heat transfer to the surrounding atmosphere. This would be an excellent project to invest in.

a. True

b. False

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Engineering

Clicker

How does the CNC machine work in product design?

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Engineering

Guest

You are given a collection of n bottles of different widths and n lids of different widths and you need to find which lid goes with which bottle. You can compare a lid to a bottle, from which you can determine if the lid is larger than the bottle, smaller than the bottle, or the correct size. However, there is no way to compare the bottles or the lids directly to each other, i. e. you can't compare lids to lids or bottles to bottles. Design an algorithm for this problem with an average-case efficiency of Θ (nlgn)

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Engineering

Layne Salas

A liquid drug, with the viscosity and density of water, is to be administered through a hypodermic needle. The inside diameter of the needle is 0.27 mm and its length is 50 mm. Determine (a) the maximum volume flow rate for which the flow will be laminar (Re < 2300), (b) the pressure drop required to deliver the maximum flow rate, and (c) the corresponding wall shear stress

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Engineering

Watson

In an orthogonal cutting operation, if the friction coefficient between the tool and the chip is decreased while the material and the rake angle are kept constant, then the shear angle will increase.

True

False

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Engineering

Savion Lam

Explain working of Laser Doppler Vibrometer with diagram.

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Engineering

Dominique Wang

Which material would cause a more severe burn if equal masses of two distinct metals are heated to a temperature of 100 °C: the one with the higher specific heat capacity or the one with the lower specific heat capacity?

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Engineering

Greyson Parsons

What is the basic process a technician should use when diagnosing concerns

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Engineering

Jaslyn

What is JIT and why would you advocate it to reduce inventory?

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Engineering

Imani Bass

Which one of the following is NOT a method of universal motor speed control? A. Tapped field windings with a switch selector B. Varying the voltage using semicoinductor devices C. Dynamic braking of the motor's shaft D. Using an adjustable centrifugal switch in parallel with a reistor

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Engineering

Kash Russo

Five kg of water is contained in a piston-cylinder assembly, initially at 5 bar and 300°C. The water is slowly heated at constant pressure to a final state. The heat transfer for the process is 3560 kJ and kinetic and potential energy effects are negligible.

Determine the final volume, in m3, and the work for the process, in kJ.

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Engineering

Guest

During an actual run with the calorimeter, there are two important criteria which must be satisfied by a correctly positioned thermometer. What are these two criteria?

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Engineering

Hamza Benjamin

A liquid refrigerant (sg=1,2) is flowing at a weight flow rate of 20,9 N/h. Refrigerant flashes into a vapor and its specific weight become 11,5 N/m^3. If the weigt flow rate remains at 20,9 N/h, compute the volume flow rate[10^-4 m^3/sec]. Express results in 10^-4 m^3/sec.

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Engineering

Guest

Draw and annotate a stress strain curve of a polymer

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