
(a)
Interpretation:
Whether the alloy is hypoeutectic or hypereutectic needs to be determined.
Concept Introduction:
The composition of an alloy that lies to the left of the eutectic point in the alloy phase diagram is termed as a hypo-eutectic alloy. Whereas the composition of an alloy that lies to the right of the eutectic point in the alloy phase diagram is termed as a hyper-eutectic alloy. The hypereutectic alloy has a composition beyond the eutectic point.
(b)
Interpretation:
The value of composition of the first solid formed during the solidification needs to be determined.
Concept Introduction:
Freezing is the other name for solidification. Solidification is the phase change of matter which results in the production of a solid phase. Mostly, this phase occurs when the temperature of a liquid is lowered under the freezing point. At the solidification temperature, atoms which are present in the liquid begins to bond and start the formation of crystals.
(c)
Interpretation:
The composition and amount of each phase at 184°C needs to be determined.
Concept Introduction:
Solidification process is also known as a Freezing process which is a phase change of matter. The phase change of matter that results in the production of the solid phase. Regularly, this occurs when the temperature of the liquid is lowered below the freezing point. Undercooling of liquids takes place in the process of solidification. Solidification can yield metastable product structures at high undercooling. The constituents of the metastable products are the result of kinetic competition.
(d)
Interpretation:
The composition and amount of each phase at 182°C needs to be determined.
Concept Introduction:
Solidification process is also known as a freezing process which is a phase change of matter. The phase change of matter that results in the production of the solid phase. Regularly, this occurs when the temperature of the liquid is lowered below the freezing point. Undercooling of liquids takes place in the process of solidification. Solidification can yield metastable product structures at high undercooling. The constituents of the metastable products are the result of kinetic competition.
(e)
Interpretation:
The composition and amount of each microconstituent at 182°C needs to be determined.
Concept Introduction:
Solidification process is also known as a Freezing process which is a phase change of matter. The phase change of matter that results in the production of the solid phase. Regularly, this occurs when the temperature of the liquid is lowered below the freezing point. Undercooling of liquids takes place in the process of solidification. Solidification can yield metastable product structures at high undercooling. The constituents of the metastable products are the result of kinetic competition.
(f)
Interpretation:
The composition and amount of each phase at 25°C needs to be determined.
Concept Introduction:
Solidification process is also known as a Freezing process which is a phase change of matter. The phase change of matter that results in the production of the solid phase. Regularly, this occurs when the temperature of the liquid is lowered below the freezing point. Undercooling of liquids takes place in the process of solidification. Solidification can yield metastable product structures at high undercooling. The constituents of the metastable products are the result of kinetic competition.

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Chapter 11 Solutions
Essentials Of Materials Science And Engineering
- 2) In the ideal transformer circuit shown below find Vo and the complex power supplied by the source. 292 www b 1:4 16 Ω ww + + 240/0° V rms -12492arrow_forward! Required information A one-shell-pass and eight-tube-passes heat exchanger is used to heat glycerin (cp=0.60 Btu/lbm.°F) from 80°F to 140°F by hot water (Cp = 1.0 Btu/lbm-°F) that enters the thin-walled 0.5-in-diameter tubes at 175°F and leaves at 120°F. The total length of the tubes in the heat exchanger is 400 ft. The convection heat transfer coefficient is 4 Btu/h-ft²°F on the glycerin (shell) side and 70 Btu/h-ft²°F on the water (tube) side. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the rate of heat transfer in the heat exchanger before any fouling occurs. Correction factor F 1.0 10 0.9 0.8 R=4.0 3.0 2.0.15 1.0 0.8.0.6 0.4 0.2 0.7 0.6 R= T1-T2 12-11 0.5 12-11 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 (a) One-shell pass and 2, 4, 6, etc. (any multiple of 2), tube passes P= T₁-11 The rate of heat transfer in the heat exchanger is Btu/h.arrow_forward3) In the ideal autotransformer circuit shown below find 11, 12 and lo. Find the average power delivered to the load. (hint: write KVL for both sides) 20/30° V(+ 2-1602 200 turns V₂ 10 + j40 Ω 80 turns V₁arrow_forward
- 1) Find Vo in the following circuit. Assume the mesh currents are clockwise. ΠΩ Ω ΖΩ ww 1Ω ww 24/0° (± 6 Ω j4 Ω 1Ω +arrow_forwardPlease show all stepsarrow_forwardQ13: The line CD, C(xc, 6), D(6,yd), the point D is on the right of point C, the value of horizontal effect H(3,0) is on the right of point C, the vertical effect V(0, -2) right of H. the distance between projection of the points H, V is 5cm, Find: 1- The value of xc and yd. 2- The distance between projections of the points C, D. 3- The true length (T.L.) of CD. 4- The angles a and ẞ. 5- A point F in the middle of line CD, find F (xf, yf).arrow_forward
- 11-3) similar to Lathi & Ding, Prob. P.6.8-1 Consider the carrier modulator shown in the figure below, which transmits a binary carrier signal. The baseband generator uses polar NRZ signaling with rectangular pulses. The data rate is 8 Mbit/s. (a) If the modulator generates a binary PSK signal, what is the bandwidth of the modulated output? (b) If the modulator generates FSK with the difference fel - fco = 6 MHz (cf. Fig 6.32c), determine the modulated signal bandwidth. Binary data source Baseband signal generator Modulated output Modulator N-E---arrow_forwardQ9: The straight line AB of true length (8) cm, having the following data: A (5, ya) & B (xb, yb), the point B is on the left of point A, the inclination of the line to the horizontal plane (H.P) is 30° (a) it Horizontal trace H (-3, 0), and point H is on the left of point A with distance (16) cm. Draw the Plan & Elevation of the line AB and determine the following: 1. The missed coordinates: ya, xb, yb. 2. The coordinates of the vertical trace (V). 3. The inclination of the line to the vertical plane (V.P) (B). 4. The distance between projections of the points A and Barrow_forwardQ12: The straight line AB, having the following data: the distance between projections of the points A and B is 8 cm, and A (2.5, 0) & B (0, 6), the point B is on the left of point A. Draw the Plan & Elevation of the line AB and determine the following: 1. The true length T.L of the line AB. 2. The coordinate of Vertical trace V and Horizontal trace H. 3. The inclination of the line to the V.P and H.P. 4. A point E in the middle of the line AB, find E (xe,ye).arrow_forward
- ! Required information Air at 25°C (cp=1006 J/kg.K) is to be heated to 58°C by hot oil at 80°C (cp = 2150 J/kg.K) in a cross-flow heat exchanger with air mixed and oil unmixed. The product of heat transfer surface area and the overall heat transfer coefficient is 750 W/K and the mass flow rate of air is twice that of oil. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Air Oil 80°C Determine the effectiveness of the heat exchanger.arrow_forwardIn an industrial facility, a counter-flow double-pipe heat exchanger uses superheated steam at a temperature of 155°C to heat feed water at 30°C. The superheated steam experiences a temperature drop of 70°C as it exits the heat exchanger. The water to be heated flows through the heat exchanger tube of negligible thickness at a constant rate of 3.47 kg/s. The convective heat transfer coefficient on the superheated steam and water side is 850 W/m²K and 1250 W/m²K, respectively. To account for the fouling due to chemical impurities that might be present in the feed water, assume a fouling factor of 0.00015 m²-K/W for the water side. The specific heat of water is determined at an average temperature of (30 +70)°C/2 = 50°C and is taken to be J/kg.K. Cp= 4181 Water Steam What would be the required heat exchanger area in case of parallel-flow arrangement? The required heat exchanger area in case of parallel-flow arrangement is 1m².arrow_forwardA single-pass crossflow heat exchanger is used to cool jacket water (cp = 1.0 Btu/lbm.°F) of a diesel engine from 190°F to 140°F, using air (Cp = 0.245 Btu/lbm.°F) at inlet temperature of 90°F. Both air flow and water flow are unmixed. If the water and air mass flow rates are 85500 lbm/h and 400,000 lbm/h, respectively, determine the log mean temperature difference for this heat exchanger. Assume the correction factor F to be 0.92. Air flow (unmixed) Water flow (unmixed) The log mean temperature difference of the heat exchanger is °F.arrow_forward
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