Answered: Why is so Bernulli's principle so…

Engineering

Mechanical Engineering

Why is so Bernulli's principle so important?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Samples of Eutectoid steel heated to austenite phase at (850 C) for (1 hr.) ,then cooling as the (TTT diagram ) as below. find the final structure for each sample. 1- rapid cooling to room temperature. 2- rapid cooling to (690 C) and hold to( 2 hr.), then, rapid cooling to room temperature. 3- rapid cooling to (610 C) and hold to( 3 min.), then, rapid cooling to room temperature. 4- rapid cooling to (580 C) and hold to( 2 sec ), then, rapid cooling to room temperature. 5- rapid cooling to (450 C) and hold to( 1 hr.), then, rapid cooling to room temperature. 6- rapid cooling to (300 C) and hold to( 7 min.), then, rapid cooling to room temperature. rapid cooling to (300 C) and hold to( 5 hr.), then, rapid cooling to -V room temperature. 800 Eutectoid temperature 1400 700- 1200 600 1000 500 800 400- A. 600 300 M(start) 200 50% 400 M+ A M(50%) M(90%) 100 200 10-1 1 10 102 103 104 105 Time (s) Temperature (C) Temperature ("F)
Answer this please important
Q4) Explain the alloy formation process and the different between Binary and Triple or (Ternary) alloy system with examples.
A sheet of a 70% Cu-30% Zn alloy is cold-rolled 20% to a thickness of 3.0mm. The sheet is then further coldrolledto 2.0 mm. What is the percentage cold work?
(ii) The turbine blade root is found to contain a surface fatigue crack of 3.3 mm during a routine maintenance inspection. The major stop-start load cycle is experienced twice per day with a minimum stress of 34 MPa and a maximum stress of 195 MPa. The turbine blade has a KIC of 75 MPa√m. Fatigue crack growth rate data for this alloy is given by: the Paris law constant, A = 4.5 x 10-11 and the Paris law exponent, m = 3.8. How many more stop-starts would you recommend be used? Explain your reasoning. You can assume the shape factor Q = 1.2, K is in MPaNm and a (crack length) is in m
Question-6. For solidification of a piece of FCC-metal at 860 °C. The melting point of the metal is 1260 °C. The latent heat of fusion and surface free energy are -2.16 x108 J/m³ and 0.126 J/m², respectively. If nucleation is homogeneous, answer the following questions: (a) Compute the critical radius r* in nm (b) Compute the activation free energy AG* in J (c) If the lattice parameter is 0.26 nm at the melting temperature, compute the number of atoms found in a nucleus of critical size (d) Compute the critical radius at the supercooling degree of 260 K.
Derive the viscoelastic equation for the four-element model.
In the Figure below, the tensile breaking strength, ?tenstile-breaking = 140 ???. breaking strength at compression ?compression-breaking = 460 ???. pouring Machine part made of iron is shown. to the piece P=25 kN forces are acting. piece for t=26 mm Calculate reliability according to Coulomb - Mohr theory ?
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Explain annealing process?
Q3 contd. (d) The yield strength values of pure aluminium (Al) and pure copper (Cu) are 25 MPa and 20 MPa, respectively; whereas the yield strength values of cold rolled Al-Mn-Mg alloy and cast 60-40 Brass (60% Cu, 40% Zn) are 200 MPa and 105 MPa, respectively. With aid of schematics, explain the main mechanisms account for the increases in the strengths. (e) A cylindrical tie rod with a diameter of 18.4 mm is subjected to cyclic loading. The stress range is +/- 200 kN. Figure Q3.3 shows the S-N curve of the material of which the rod is made, how many cycles will this rod survive? Stress amplitude O₂ (MPa) 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 10² 10³ 104 4340 low-alloy steel Stress ratio = -1 Fig. Q3.3 105 106 Number of cycles to failure, Nf 107 108
Pls do it 30min An eutectoid steel is cooled slowly from 1000 °C to room temperature by the following different cooling rates: (i) 1 °C/s, (ii) 20 °C/s, (iii) 50 °C/s, (iv) 175 °C/s. Name the respective microstructural products for the above four cooling rates.