Show your complete solution. A 12-cm outside diameter and 10-cm inside diameter cast iron pipewith conductivity of 80 W/m-K has 4 cm of polystyrene insulation witha conductivity of 0.027 W/m-K. Saturated steam at 500 °C is flowingthrough the pipe and the outside surface temperature is 60 °C.Determine the heat transfer per 150 meters of pipe.

Answered: Image /qna-images/answer/1e06a322-fff0-4ee4-b8a3-5faa30eb9414.jpg

Answered: A 12-cm outside diameter and 10-cm…

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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Heat treatment is the controlled heating and cooling of metals to alter their physical and mechanical properties without changing the product shape. When performing the cooling step of the tempering process, knife makers have used material such as clay to cover portions of the blade to slow the cooling rate of the covered steel. Why may this technique be beneficial for making a sword which holds a sharp edge while remaining flexible enough to withstand the forces subjected to it in battle?
A machinist was tasked to insert an aluminum piston into a steel cylinder. The inside diameters of the cylinder and of the piston are 0.500 m and 0.4998 m, respectively, at 25OC. To what temperature must they be heated to obtain a perfect fit?
Q2 (a) A sliding door rail as shown in Figure 2.1, is to be produced using steel as the raw material. If direct extrusion is to be used, at what temperature range (degree Celsius) and extrusion pressure range (MPa) the process should be carried out? Figure 2.1 A sliding door rail
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"Your boss requests a recommendation on which process to use to make fillet welds on stainless steel rail tank cars with this material. Your heart beating fast, you respond. " A: Use HYPERFILL®. The cooling rate is acceptable for this material and productivity gains are important given the large size of the product. B: "Use HYPERFILL®, for the same reasons as (A), BUT we need to change materials to a low carbon stainless steel (e.g. 304L) or we will get corrosion failure in the HAZ." C: "Use GMAW-P. For this material, this heat input is best. " D: "Use GMAW-P, for the same reasons as (C), but we need to change materials to a low carbon stainless steel (e.g. 304L) or we will get corrosion failure in the FZ."
Coupling will be used in the drive mechanism of the roles used in the Continuous Casting plant. The moment to be transmitted is high, the transmission distance is about 1500 mm, and there are fluctuations in the bending direction. Which type of coupling is best suited to absorb these fluctuations? Explain broadly the features of this coupling. Draw it schematically and explain the working principle.
Which of these factors causes more porosity to form toward the interior of a casting rather than toward the outside? (a) Gasses are less soluble in the solid metal than the liquid, so solidified areas push dissolved gasses toward the interior. (b) Casting under a vacuum causes gasses near the liquid metal surface to be drawn out of the liquid during solidification. (c) The feeding structures of the mold are designed to force entrapped air into the center of the casting. (d) Draft on the mold wall forces air bubbles toward the interior of the solidifying metal. (e) None of the above Non-eutectic alloys (most commercial alloys) solidify over a temperature range. Which of the following statements explains how this affects the casting process. (a) Solidified non-eutectic alloys are especially difficult to remove from metal dies (b) Non-eutectic alloys have significantly less fluidity than pure metals or eutectic alloys. (c) Non-eutectic alloys solidify starting from the outside of the…
Describe the die casting process in detail. Use neat sketches for clarity. Differentiate clearly between hot-chamber die casting and cold-chamber die casting processes. What is the difference between true centrifugal and semi-centrifugal casting? Describe the centrifugal casting process in detail. Use neat sketches to elaborate your description.
Use brief sentences, sketches or calculations to answer the following questions:
requirement : a good understandable handwriting and answer in step by step procedure with good arrangement

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