Student Workbook and Project Manual for Hoffman/Hopewell's Precision Machining Technology
3rd Edition
ISBN: 9798214105710
Author: Peter J. Hoffman and Eric S. Hopewell
Publisher: Cengage Learning US
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Textbook Question
Chapter 4.3, Problem 8RQ
Briefly contrast the speed and feed differences between drilling and reaming operations.
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Air at 4.4 MPa and 500°C is expanded in an adiabatic gas turbine to 0.2 MPa. Calculate the maximum work that this turbine can produce in kJ/kg. Use the table containing the ideal gas specific heats of various common gases.
The maximum work that this turbine can produce is kJ/kg.
Saturated water vapor at 150°C is compressed in a reversible steady-flow device to 1150 kPa while its specific volume remains constant. Determine the work required in kJ/kg. Use steam tables.
The work required is kJ/kg.
Three lbm of R-134a is expanded isentropically in a closed system from 100 psia and 100°F to 10 psia. Determine the total heat transfer and the work production for this process. Use the tables for R-134a.
The total heat transfer is Btu.
The work production for this process is Btu.
Three lbm of R-134a is expanded isentropically in a closed system from 100 psia and 100°F to 10 psia. Determine the total heat transfer and the work production for this process. Use the tables for R-134a.
The total heat transfer is Btu.
The work production for this process is Btu.
Chapter 4 Solutions
Student Workbook and Project Manual for Hoffman/Hopewell's Precision Machining Technology
Ch. 4.1 - Upright drill presses are available in _______ and...Ch. 4.1 - List two general types of upright drill press...Ch. 4.1 - Explain how the size of an upright drill press is...Ch. 4.1 - Briefly describe the term sensitive drill press.Ch. 4.1 - Briefly describe a gang drill press and its...Ch. 4.1 - When would a radial-arm drill press most likely be...Ch. 4.1 - Briefly describe a micro drill press and its...Ch. 4.2 - What are the two main materials used to make...Ch. 4.2 - What two types of shanks are commonly found on...Ch. 4.2 - Name three functions of the flutes on a twist...
Ch. 4.2 - Name two types of flute styles for machine...Ch. 4.2 - Prob. 5RQCh. 4.2 - What is the major difference between counterboring...Ch. 4.2 - What must be used to secure a workpiece to an...Ch. 4.2 - What devices are used to elevate a workpiece to...Ch. 4.2 - If 50 parts measuring 1" I" 3" each needed a...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.3 - List five drill press safety guidelines.Ch. 4.3 - Briefly define the term cutting speed.Ch. 4.3 - What unit of measure is used to define cutting...Ch. 4.3 - What is feed, and how is feed stated for drill...Ch. 4.3 - Briefly describe two methods for locating hole...Ch. 4.3 - What is spotting and why is it performed?Ch. 4.3 - What is pecking, or peck drilling?Ch. 4.3 - Briefly contrast the speed and feed differences...Ch. 4.3 - What drill press component can be used to control...Ch. 4.3 - Calculate feed depth for a 90-degree countersink...Ch. 4.3 - Calculate feed depth for an 82-degree countersink...Ch. 4.3 - What benefit does tapping on the drill press offer...Ch. 4.3 - How many turns must a 1/4-20 tap be turned into a...Ch. 4.3 - Prob. 14RQ
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- Oxygen at 300 kPa and 90°C flowing at an average velocity of 3 m/s is expanded in an adiabatic nozzle. What is the maximum velocity of the oxygen at the outlet of this nozzle when the outlet pressure is 60 kPa? Use the table containing the ideal gas specific heats of various common gases. The maximum velocity of the oxygen at the outlet of this nozzle is m/s.arrow_forwardThe well-insulated container shown in the given figure is initially evacuated. The supply line contains air that is maintained at 150 psia and 110°F. The valve is opened until the pressure in the container is the same as the pressure in the supply line. Determine the minimum temperature in the container when the valve is closed. Use the table containing the ideal gas specific heats of various common gases. A valve is shown at the vertical tube. The minimum temperature in the container when the valve is closed is °F.arrow_forwardDuring the isothermal heat addition process of a Carnot cycle, 1050 kJ of heat is added to the working fluid from a source at 400°C. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the total entropy change for the process. The total entropy change for the process is kJ/K.arrow_forward
- Question 6 What kind of problem would arise if components of the strain tensor were defined as varrow_forwardplease show steps, thanksarrow_forwardYou design a pin joint. The pin is made of a material with the yield strength of 325 MPa and ultimate strength of 500 MPa. The maximum allowed stress in service is expressed as a tensor 0 100 0 σ 100 0 0 MPa 0 0 Evaluate the safety factor SF for stress in this design. Write answer unitless rounding to 2 decimal places and enter decimals even if those are zeros.arrow_forward2. A single crystal of aluminum is oriented for a tensile test such that its slip plane normal makes an angle of 28.1° with the tensile axis. Three possible slip directions make angles of 62.4°, 72.0°, and 81.1° with the same tensile axis. (a) Which of these three slip directions is most favored? (b) If plastic deformation begins at a tensile stress of σ x = 1.95 MPa (280 psi), determine the critical resolved shear stress for aluminium. (c) If this single crystalspecimen is loaded under the new stress state: σ x =1.2 MPa σ y = -0.8 MPa, and τ xy = 0.6 MPa, howmuch is the resolve the shear stress along the most favored slip direction?arrow_forwardPlease explain how to do each part and tell me if my drawing is correct. thank youarrow_forward4. Determine which of the following flow fields represent a possible incompressible flow? (a) u= x²+2y+z; v=x-2y+z;w= -2xy + y² + 2z a (b) V=U cose U coso 1 (9) [1-9] Usino |1 (4)] [+] V=-Usin 1+1arrow_forward3. Determine the flow rate through the pipe line show in the figure in ft³/s, and determine the pressures at A and C, in psi. 5' B C 12° 20' D 6"d 2nd- Water Aarrow_forward5. A flow is field given by V = x²₁³+xy, and determine 3 ·y³j- (a) Whether this is a one, two- or three-dimensional flow (b) Whether it is a possible incompressible flow (c) Determine the acceleration of a fluid particle at the location (X,Y,Z)=(1,2,3) (d) Whether the flow is rotational or irrotational flow?arrow_forwardSolve this problem and show all of the workarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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