Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Textbook Question
Chapter 12, Problem 38SDP
An incorrect and a correct design for casting are shown in Fig. P12.38. Review the changes made and comment on their advantages.
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Gruebler's formula for the following mechanism?
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The guide vane angle of a reaction turbine (Francis type
make 20° with the tangent. The moving blade angle at entry is
120°. The external diameter of runner is 450 mm and the internal
diameter is 300 mm. Runner width at entry is 62.5mm and at exit
100mm. Calculate the blade angle at exit for radial discharge.
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750 ×2.01
Compressor Selection: (Q1)
While a manufacturing cell is running, the calculated flow rate of air into a compressor is 40 SCFM.
Which compressor from this list should be selected?
A. A compressor that uses 80 SCFM
B. A compressor that uses 40 SCFM
C. A compressor that delivers 80 SCFM
D. A compressor that delivers 40 SCFM
Chapter 12 Solutions
Manufacturing Engineering & Technology
Ch. 12 - Why are steels more difficult to cast than cast...Ch. 12 - What is the significance of hot spots in metal...Ch. 12 - What is shrinkage allowance? Machining allowance?Ch. 12 - Explain the reason for drafts in molds.Ch. 12 - Prob. 5RQCh. 12 - What are light castings and where are they used...Ch. 12 - Name the types of cast irons generally available,...Ch. 12 - Comment on your observations regarding Fig. 12.5.Ch. 12 - Describe the difference between a runner and a...Ch. 12 - What is the difference between machining allowance...
Ch. 12 - What is dross? Can it be eliminated?Ch. 12 - Describe your observation concerning the design...Ch. 12 - If you need only a few castings of the same...Ch. 12 - Do you generally agree with the cost ratings in...Ch. 12 - Describe the nature of the design differences...Ch. 12 - Note in Fig. 12.5 that the ductility of some cast...Ch. 12 - Do you think that there will be fewer defects in a...Ch. 12 - Explain the difference in the importance of drafts...Ch. 12 - What type of cast iron would be suitable for...Ch. 12 - Explain the advantages and limitations of sharp...Ch. 12 - Explain why the elastic modulus, E, of gray cast...Ch. 12 - If you were to incorporate lettering or numbers on...Ch. 12 - The general design recommendations for a well in...Ch. 12 - The heavy regions of parts typically are placed in...Ch. 12 - What are the benefits and drawbacks to having a...Ch. 12 - When designing patterns for casting, patternmakers...Ch. 12 - Using the information given in Table 12.2, develop...Ch. 12 - The part in Figure P12.28 is to be cast of 10% Sn...Ch. 12 - Describe the general design considerations...Ch. 12 - Add more examples of applications to those shown...Ch. 12 - Explain how ribs and serrations are helpful in...Ch. 12 - List casting processes that are suitable for...Ch. 12 - Small amounts of slag and dross often persist...Ch. 12 - If you need only a few units of a particular...Ch. 12 - For the cast metal wheel illustrated in Fig....Ch. 12 - Assume that the introduction to this chapter is...Ch. 12 - In Fig. P12.37, the original casting design shown...Ch. 12 - An incorrect and a correct design for casting are...Ch. 12 - Using the method of inscribed circles, shown in...Ch. 12 - A growing trend is the production of patterns and...Ch. 12 - Repeat Problem 12.40 for the case where (a) a...
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- SCFM Calculation: (Q1) A pneumatic system running a manufacturing cell works on 80 psi and requires a flow rate of 10 CFM to operate. A compressor must be selected to run the cell. Calculate the amount of air going into the compressor to run this cell. (Hint: This will be in SCFM) Accurate to two decimals. Do not write the unit.arrow_forward: +00 العنوان >scóny : + 개 العنوان I need a actanicu urawing wit д い Ants nation Taxi pu +9635. The guide vane angle of a reaction turbine (Francis type make 20° with the tangent. The moving blade angle at entry is 120°. The external diameter of runner is 450 mm and the internal diameter is 300 mm. Runner width at entry is 62.5mm and at exit 100mm. Calculate the blade angle t exit for radial discharge. ۲/۱ = 44 985arrow_forward:+B العنوان I need a actanicu urawing with Car nation The guide vane angle of a reaction turbine (Francis type make 20° with the tangent. The moving blade angle at entry is 120° The external diameter of runner is 450 mm and the internal diameter is 300 mm. Runner width at entry is 62.5mm and at exit 100mm. Calculate the blade angle at exit for radial discharge.arrow_forward
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- :+B العنوان I need a actanicu urawing with Car nation The guide vane angle of a reaction turbine (Francis type make 20° with the tangent. The moving blade angle at entry is 120° The external diameter of runner is 450 mm and the internal diameter is 300 mm. Runner width at entry is 62.5mm and at exit 100mm. Calculate the blade angle at exit for radial discharge.arrow_forwardThe guide vane angle of a reaction turbine (Francis type make 20° with the tangent. The moving blade angle at entry is 120°. The external diameter of runner is 450 mm and the internal diameter is 300 mm. Runner width at entry is 62.5mm and at exit 100mm. Calculate the blade angle at exit for radial discharge.arrow_forwardanswer this as soon as possible, please.arrow_forward
- A piston–cylinder device contains 50 kg of water at 250 kPa and 25°C. The cross-sectional area of the piston is 0.1 m2. Heat is now transferred to the water, causing part of it to evaporate and expand. When the volume reaches 0.26 m3, the piston reaches a linear spring whose spring constant is 100 kN/m. More heat is transferred to the water until the piston rises 20 cm more. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the work done during this process. The work done during this process is kJ.arrow_forwardA 4-m × 5-m × 7-m room is heated by the radiator of a steam-heating system. The steam radiator transfers heat at a rate of 10,000 kJ/h, and a 100-W fan is used to distribute the warm air in the room. The rate of heat loss from the room is estimated to be about 5000 kJ/h. If the initial temperature of the room air is 10°C, determine how long it will take for the air temperature to rise to 25°C. Assume constant specific heats at room temperature. The gas constant of air is R = 0.287 kPa·m3/kg·K (Table A-1). Also, cv = 0.718 kJ/kg·K for air at room temperature (Table A-2). Steam enters the radiator system through an inlet outside the room and leaves the system through an outlet on the same side of the room. The fan is labeled as W sub p w. The heat is given off by the whole system consisting of room, radiator and fan at the rate of 5000 kilojoules per hour. It will take 831 Numeric ResponseEdit Unavailable. 831 incorrect.s for the air temperature to rise to 25°C.arrow_forwardA piston–cylinder device contains 50 kg of water at 250 kPa and 25°C. The cross-sectional area of the piston is 0.1 m2. Heat is now transferred to the water, causing part of it to evaporate and expand. When the volume reaches 0.26 m3, the piston reaches a linear spring whose spring constant is 100 kN/m. More heat is transferred to the water until the piston rises 20 cm more. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the final pressure and temperature. The final pressure is kPa. The final temperature is ºC. Find the work done during the processarrow_forward
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