Rank the following material combinations from highest to lowest risk of galvanic corrosion. (Show your reasoning)

a) Copper with iron

b) Titanium with tantalum

c) Cobalt with gold

d) Cobalt with titanium

e) Chromium with tantalum

f) Titanium with stainless steel

For , what is the determinant of A?

• Comment on the validity of Bernoulli’s equation Comment on the comparison of the calculated and measured total heads in this experiment.

• Discuss your results, referring, in particular, to the following:

• Energy loss and how it is shown by the results of this experiment, and the components of Bernoulli’s equation  

• Indicate the points of maximum velocity and minimum pressure with venture tube  

• Suppose mercury instead of water was used as the manometer fluid. How would this affect the accuracy of the measurements?

Otto cycle homework with a given of

4 cylinders

2.4L

T1 = 30 C

T3 = 2800 K

P1 = 100kpa

12 percent clearance

find the P and T at the end of expansion process

UNIT EIGHT

      Coating and Deposition Processes                                                              

• Explain the difference between coating and cladding
• Describe the two main methods of painting: dipping and spraying (manual, automatic or electrostatic).

• State the characteristic of each method.
• Identify materials suitable for each method.

• Describe the electroplating process.

• List typical plating materials and give reasons for their use.

• Explain the process of anodizing and state typical applications.
• Classify vapour deposition processes into physical vapour deposition (PVD) and chemical vapour deposition (CVD).
• Describe the principle of each process.
• Identify applications of each process.
• Recognize the importance of thermal spraying.
• Explain the principle of thermal spraying.
• Identify typical thermal spraying processes according to the technology used to melt the coating material.:- oxyfuel flame, electric arc and plasma arc.

consider the turbine blade tip available in the laboratory of University and discuss the needs of cooling technology specially specially to be used for the blood tree using photo and 77 develop a mathematical model and show the effect of wearing the dimensions of the blood type on its performance discuss also the effect of film cooling and unsteady turbulence something pulling film hall and gauge arrangement to be made and enhancement in the cooling techniques which we can implement Jet impingement of multiple jets effect then pin fin cooling been array and partial length in arrangement to be made effect of pension orientation pin fin dimple cooling to be used on the reap tabulated calling and also discuss the f fusion cooling techniques of gas turbine

Earthquake proof bed.

1. List the system parameter for this bed.

2. What are the engineering contradiction about this thing?

Why is it important to define specific mission scenarios (or operational profiles) within the context of the system operational requirements?

A composite cylindrical wall is composed of 2 materials of thermal conductivity ka = 240 W/mK and kb = 20 W/mK, where interfacial contact resistance is negligible.

- Liquid pumped through the tube is at a temperature Tinf, i = 200 F and provides a convection coefficient hi = 450 W/m^2K at the inner surface of the composite pipe

-The outer surface is exposed to Tinf, o and provides a convection coefficient of ho = 20 W/m^2K

-A thermocouple between the two pipes (at r = r2) gives T2 = 180 F

- r1 = 0.25m, r2 = 0.31 m, r3 = 0.35 m

- Assume pipe length = 1 m

(A) Sketch (Clearly and neatly) the thermal resistance circuit of the system and express all resistances in terms of variables. Calculate all the resistances and provide their values and units.

(B) Calculate the heat transfer, q between the interface where r = r2 and the ambient air and provide the units.

(C) Obtain the outside free stream temperature Tinf,o

Air, at p = 1 atm and a temperature of 60 ° C enters a thin-walled (d = 5.0 mm) and long (l = 3 m) tube. A constant thermal flow is applied to the air from the tube walls. The mass air flow is 1.5x10^(-04) kg / s. If the temperature on the surface of the tube at its outlet is 120 ° C, determine the rate of heat transfer entering the tube. Use the air properties for 400 K.