Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN: 9781305494695
Author: Larry Jeffus
Publisher: Cengage Learning
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Chapter 8, Problem 21R
What is dross?
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CORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED.
12: A steel cantilever beam 16 ft 8 in in length is subjected to a concentrated load of 320 lb acting at the freeend of the bar. A commercially available rolled steel section, designated as W12x32, is used for the beam. Assume that the total depth of the beam is 12 in, and the neutral axis of the section is in the middle. Determine the maximum tensile and compressive stresses. (Properties of commercially available rolled steel section provided in the table. Z = section modulus). ANS: σT = σC = 1,572.482 lb/in2
CORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED.
14: Two ½-in x 8-in cover plates are welded to two channels 10 in high to formthe cross section of the beam shown in Fig. 8-59. Loads are in a vertical plane and bendingtakes place about a horizontal axis. The moment of inertia of each channel about ahorizontal axis through the centroid is 78.5 in4. If the maximum allowable elastic bendingstress is 18,000 lb/in2, determine the maximum bending moment that may be developedin the beam.ANS: 1,236,000 lb-in.
CORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED.
11: A beam of circular cross section is 7 in in diameter. It is simply supported at each end and loaded by twoconcentrated loads of 20,000 lb each, applied 12 in from the ends of the beam. Determine the maximum bending stressin the beam. ANS: σ = 7,127.172 lb/in2
Chapter 8 Solutions
Welding: Principles and Applications (MindTap Course List)
Ch. 8 - List the types of metal that a plasma torch can be...Ch. 8 - What two charged particles exist in a plasma?Ch. 8 - What is the approximate temperature of a plasma...Ch. 8 - To prevent a manual-type torch from damage, it is...Ch. 8 - How are high-power plasma torches cooled?Ch. 8 - What is the name of the torch part made of copper...Ch. 8 - What is the name of the material that resists...Ch. 8 - What does the nozzle insulator provide to the...Ch. 8 - What are two other names that the shield is...Ch. 8 - How often should cables, control wiring, and hoses...
Ch. 8 - What may be on a coolant reservoir to indicate the...Ch. 8 - Why is the cooling water switched on and off with...Ch. 8 - Why must a filter dryer be used on the air supply...Ch. 8 - List the four common variations of the...Ch. 8 - Define standoff distance.Ch. 8 - What two terms refer to the squareness of a cut?Ch. 8 - What is the pilot arc?Ch. 8 - List five factors that can affect the kerf width.Ch. 8 - What factors affect the bevel angle left on the...Ch. 8 - List five things that are affected by changes in...Ch. 8 - What is dross?Ch. 8 - List some advantages of using a water table.Ch. 8 - Why are most hand PAC torches limited to 100...Ch. 8 - List five special safety concerns for the PAC...Ch. 8 - Describe the three techniques for piercing a plate...Ch. 8 - Prob. 26R
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