Answered: What possible error can occur by using…

What possible error can occur by using (a) a single large piece of ice or (b) very fine shavings of ice in an experiment for the latent heat of fusion of ice?

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter26: Welding Metallurgy

Section: Chapter Questions

Problem 35R: Why must the stress-relieving temperature be kept be-low the critical temperature of the plate?

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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

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What possible error can occur by using (a) a single large piece of ice or (b) very fine shavings of ice in an experiment for the latent heat of fusion of ice?

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Pick the best soultion for the multiple choices. Modulus of resilience is: Slope of elastic portion of stress – strain curve Area under the elastic portion of the stress –strain curve Energy absorbed during fracture in a tension test Energy absorbed during fracture in an impact test Slope of the plastic portion of the stress- strain curve ( ) Fatigue failure occurs under the condition of: High elastic stress High corrosivity High stress fluctuations High temperature High rate of loading ( ) Creep failure of a material occurs most rapidly when the operating temperature is: Cryogenic temperature Equal to its melting point Grater than 0.4 times its melting point in K Greater than 200 oF Close to boiling point ( ) Young’s modulus of a material is indicative of its: Tensile strength Yield Strength Ductility Stiffness Corrosion Resistance…
A 44-mm diameter cylindrical steel specimen is to be heat treated such that the microstructure throu will be at least 50% martensite. We are to decide which of several alloys will satisfy this criterion if the quen medium is moderately agitated (a) oil, and (b) water. Cooling rate at 700°C (1300*F) Cooling rate at 700°C (1300°F) 7 "Fis 3.9 °Cs 305 125 56 33 16.3 10 305 125 56 33 16.3 10 7 "F/s 9 5.6 170 70 31 18 170 70 31 18 9 5.6 3.9 "Cs 100 100 Surface 75 75 Surface Center 50 Center Center 25 R Surface 10 30 mm 10 20 30 mm 1j in. 1 1 in. Equivalent distance from quenched end Equivalent distance from quenched end water quenching oil quenching Cooling rate at 700°C (1300°F) 490 305 125 56 33 16.3 10 5.1 3.5 °F/s 270170 70 31 18 60 2.8 2 °C/s 9 5.6 3.9 -100 50 4340 80 40 4140 8640 30 5140 1040 20 10 20 30 40 50 mm 1 1 1 2 in. 4. Distance from quenched end Hardness, HRC Diameter of bar (mm) 20 m14 Diameter of bar (in.) Diameter of bar (mm) 1/2 m/4 Percent martensite Diameter of bar (in.)
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