Precision Machining Technology (MindTap Course List)
2nd Edition
ISBN: 9781285444543
Author: Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Publisher: Cengage Learning
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Textbook Question
Chapter 2.7, Problem 14RQ
What is a Brale penetrator and what hardness scale uses it?
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Problem 10: If the bucket weighs 50 lb, determine
the tension developed in each of the wires.
B
$30°
5
E
D
130°
Problem 3: Four-Force Equilibrium
Knowing the forces in members A and C, determine the force of B and D, assuming the
system is in equilibrium. A structural joint is held in equilibrium by four forces acting along
different members.
•
Member A applies a force of 4 kN at an angle of 60° above the positive x-axis.
•
Member C applies a force of 2 kN horizontally to the left along the x-axis.
•
Member B applies an unknown force along the horizontal direction.
•
Member D applies an unknown force at an angle of 45° above the negative x-axis.
Determine the forces in members B and D, assuming the system is in static equilibrium.
4 kN
2 kN
C
45°
A
D
60°
FB
B
Problem 18: Determine the force in each member of the truss. State if the members are in
tension or compression.
3 ft
3 ft
3 ft
B
D
4 ft
4 ft.
130 lb
E
Chapter 2 Solutions
Precision Machining Technology (MindTap Course List)
Ch. 2.1 - Briefly describe what you believe are the two most...Ch. 2.1 - Briefly describe what you believe are the two most...Ch. 2.1 - What should be done in the case of a personal...Ch. 2.1 - What does OSHA stand for and what is OSHA's...Ch. 2.1 - List three specific clothing items that should not...Ch. 2.1 - If someone working around machinery has long hair,...Ch. 2.1 - Never operate machinery without proper ______ in...Ch. 2.1 - What is PPE?Ch. 2.1 - What is the most common and important piece of PPE...Ch. 2.1 - What does NFPA stand for?
Ch. 2.1 - What does HMIS stand for?Ch. 2.1 - Prob. 12RQCh. 2.1 - Prob. 13RQCh. 2.1 - Class A fire extinguishers use ______ as a media...Ch. 2.1 - What class of fire extinguisher should be used on...Ch. 2.1 - What class of fire extinguisher should be used on...Ch. 2.1 - What is the purpose of lockout and tagout...Ch. 2.2 - What is the inch equivalent of 1 millimeter?Ch. 2.2 - What is the inch equivalent of 32.5 mm to the...Ch. 2.2 - Use the decimal equivalent chart on page 69 to...Ch. 2.2 - Use the decimal equivalent chart on page 69 to...Ch. 2.2 - Use the decimal equivalent chart on page 69 to...Ch. 2.2 - What does parallel mean?Ch. 2.2 - What does perpendicular mean?Ch. 2.2 - What is the radius of a 3.65-inch-diameter circle?Ch. 2.2 - What is the circumference of the circle in the...Ch. 2.2 - What are the Cartesian coordinates of the four...Ch. 2.2 - Label the hypotenuse, adjacent side, and opposite...Ch. 2.3 - Define semi-precision measurement.Ch. 2.3 - What is comparison measurement?Ch. 2.3 - List three rules to follow when or storing...Ch. 2.3 - List the parts of the combination set.Ch. 2.3 - Describe four uses of the combination set.Ch. 2.3 - What semi-precision tool is used to take angular...Ch. 2.3 - What type of square has a blade that can be tilted...Ch. 2.4 - List three key points in caring for precision...Ch. 2.4 - What type of fixed gage can be used to check hole...Ch. 2.4 - What type of fixed gage can be used to check a...Ch. 2.4 - How is the go member of a go/no-go ring gage set...Ch. 2.4 - What type of fixed gage can be used to check...Ch. 2.4 - A _____________ can provide a reference plane for...Ch. 2.4 - What two other tools could be used with the answer...Ch. 2.4 - ___________ is the process of attaching gage...Ch. 2.4 - What is the smallest graduation on an English...Ch. 2.4 - What is the smallest graduation on a metric...Ch. 2.4 - A micrometer uses an accurate __________ to...Ch. 2.4 - What is the smallest graduation on an inch...Ch. 2.4 - What is the smallest graduation on a metric...Ch. 2.4 - What is calibration and why is it important?Ch. 2.4 - What is a transfer-type measuring tool?Ch. 2.4 - What are the two basic types of indicator...Ch. 2.4 - Briefly describe the main difference between the...Ch. 2.4 - A sine tool uses the trigonometric function of...Ch. 2.4 - List the two most common methods for measuring...Ch. 2.4 - What are one advantage and one disadvantage of...Ch. 2.4 - A(n) ________ displays a magnified image of a part...Ch. 2.4 - What other tool can be useful for measuring very...Ch. 2.4 - What does CMM stand for?Ch. 2.5 - What are the four basic parts of a process plan?Ch. 2.5 - Briefly define quality control and explain its...Ch. 2.5 - Briefly explain the purpose of a sampling plan.Ch. 2.5 - What is the purpose of an inspection plan?Ch. 2.5 - What is the important factor to consider when...Ch. 2.5 - What does SPC stand for?Ch. 2.5 - What does an X-bar chart track?Ch. 2.5 - What does an R-chart track?Ch. 2.5 - If an X-bar chart graph is between LCL and the...Ch. 2.5 - If an X-bar chart graph falls below the LCL or...Ch. 2.6 - What is the difference between ferrous and...Ch. 2.6 - Briefly describe an alloy.Ch. 2.6 - Name three alloying elements added to steel.Ch. 2.6 - What is cast iron?Ch. 2.6 - What element is in stainless steel that makes it...Ch. 2.6 - Small particles of________ alloys are flammable.Ch. 2.6 - What are the two major benefits of titanium?Ch. 2.6 - What does AISI stand for?Ch. 2.6 - What does SAE stand for?Ch. 2.6 - What is (are) the major alloying element(s) in...Ch. 2.6 - What is (are) the major alloying element(s) in...Ch. 2.6 - What does IADS stand for?Ch. 2.6 - What is the overall purity of 1030 aluminum?Ch. 2.6 - What is (are) the major alloying element(s) of...Ch. 2.6 - What does UNS stand for?Ch. 2.7 - Briefly define the term heat treatment.Ch. 2.7 - Direct hardening can be performed on steel...Ch. 2.7 - ________ is the rapid cooling of metal during heat...Ch. 2.7 - What type of hardening operation that leaves the...Ch. 2.7 - In what two ways can the process described in the...Ch. 2.7 - What method is used to harden low-carbon steels?Ch. 2.7 - List two methods of performing the operation...Ch. 2.7 - After hardening, steel is very hard and brittle....Ch. 2.7 - Briefly define annealing.Ch. 2.7 - Prob. 10RQCh. 2.7 - A dual-chamber furnace allows the user...Ch. 2.7 - In addition to standard PPE, what specific PPE and...Ch. 2.7 - What hardness testing scale uses many different...Ch. 2.7 - What is a Brale penetrator and what hardness scale...Ch. 2.8 - Why is a routine maintenance plan important?Ch. 2.8 - What is a lubricant?Ch. 2.8 - List three methods of applying lubricants to...Ch. 2.8 - List two components of machine tools that should...Ch. 2.8 - Briefly describe a gib.Ch. 2.8 - What are the purposes of cutting fluids?Ch. 2.8 - What are the two major types of cutting fluids?Ch. 2.8 - Prob. 8RQCh. 2.8 - What two ingredients are often used as additives...Ch. 2.8 - Oils that can be combined with water are...Ch. 2.8 - What is the major benefit of cutting fluids that...Ch. 2.8 - What is the difference between synthetic and...Ch. 2.8 - A______ can be used to measure cutting fluid...Ch. 2.8 - List three methods of applying cutting fluids.Ch. 2.8 - Always review the________ before using any...Ch. 2.8 - What type of cutting fluids should never be used...
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- Problem 16: Determine the force in each of the member of the truss and state if the members are in tension or compression. Set P₁ = 10 kN, P2 = 8 kN. 2 m G F E A A 1 m B 2 m 1 m P1 Darrow_forwardProblem 7: Determine the force in each cord for equilibrium of the 60-kg bucket. D E 4 m 4 m B 3 m- 3 m- 3 m.arrow_forwardProblem 15: Determine the reactions at the pin A and the tension in cord BC. Set F = 40 kN. Neglect the thickness of the beam. 26 kN F 13 12 -2 m 4 m B 4arrow_forward
- Problem 21: Determine the force in members EF, CF, and BC and state if the members are in tension or compression. 1.5 m 4 kN E D 8 kN B 2 m 2 marrow_forwardProblem 8: If the cords suspend the two buckets in the equilibrium position, determine the weight of bucket B. Bucket A has a weight of 60 lb. E 65° C 20° 40° F B 20° Aarrow_forwardProblem 4: Four Force Equilibrium The members of a truss are connected at joint O. Determine the magnitudes of F₁ and F2 for equilibrium, assuming 0 = 60°. 5 kN 7 kN 70° 30°arrow_forward
- Problem 17: Determine the force in each member of the truss and state if the members are in tension or compression. Set P₁ = 9 kN, P2 = 15 kN. P₁ 3 m B P2 3m- D 4 marrow_forwardProblem (11): A pipe discharges an unknown fluid into the atmosphere from a tank of depth (h) through a pipe of length (L), and diameter (d). Given the values of L [m], d [cm], and (h) [cm], calculate the discharge rate (Q) [lit/s] that would maintain Laminar flow in the pipe with a Reynolds number of Re=1500. Ignore minor losses. h darrow_forwardProblem 6: Two-Force Equilibrium Determine the angle 0 for connecting member B to the plate so that the resultant angle of FA and FB is directed along the positive x axis. What is the magnitude of the resultant force? -30° FA = 400 lb B x FB = 500 lbarrow_forward
- Staticsarrow_forwardProblem 12: Determine the moment about point O. And determine if it is clockwise or counterclockwise? 0.4 m 45° 0.3 m F=300 N 30°arrow_forwardWind at 10℃ blows against the 30-m-high chimney at 2.5 m/s. If the diameter of the chimney is 2 m, determine the moment that must be developed at its base to hold it in place. Consider the chimney to be a rough cylinder.arrow_forward
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