Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN: 9781305494695
Author: Larry Jeffus
Publisher: Cengage Learning
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Chapter 3, Problem 17R
What are taps on a welding transformer?
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Chapter 3 Solutions
Welding: Principles and Applications (MindTap Course List)
Ch. 3 - Describe the relation between voltage and amperage...Ch. 3 - What produces the heat during a shielded metal arc...Ch. 3 - Voltage can be described as ____________ .Ch. 3 - Amperage can be described as _____________.Ch. 3 - Wattage can be described as___________.Ch. 3 - What determines the exact temperature of the...Ch. 3 - Does all of the heat produced by an SMA weld stay...Ch. 3 - What do the following abbreviations mean: AC,...Ch. 3 - Sketch a welding machine, an electrode lead, an...Ch. 3 - Sketch a welding machine, an electrode lead, an...
Ch. 3 - Why is SMA welding current referred to as constant...Ch. 3 - What is the higher voltage at the electrode before...Ch. 3 - Referring to the graph in Figure 3-9, what would...Ch. 3 - How does arc blow affect welding?Ch. 3 - How can arc blow be controlled?Ch. 3 - How does a welding transformer work?Ch. 3 - What are taps on a welding transformer?Ch. 3 - What would the approximate amperage setting be if...Ch. 3 - What are the advantages of the inverter-type...Ch. 3 - What is the difference between the welding current...Ch. 3 - What are the advantages of alternators over...Ch. 3 - What must be checked before using the 110-volt...Ch. 3 - What is meant by a welder's duty cycle?Ch. 3 - Why must a welding machine's duty cycle never be...Ch. 3 - Why is copper better than aluminum for welding...Ch. 3 - A splice in a welding cable should never be any...Ch. 3 - Why must the electrode holder be correctly sized?Ch. 3 - What can cause a properly sized electrode holder...Ch. 3 - What problem can occur if welding machines are...Ch. 3 - Why must welding cables never be tied to...
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- Please sovle this for me and please don't use aiarrow_forward3. The cold-drawn AISI 1040 steel bar shown in the figure is subjected to a completely reversed axial load fluctuating between 28 kN in compression to 28 kN in tension. Estimate the fatigue factor of safety based on achieving infinite life (using Goodman line) and the yielding factor of safety. If infinite life is not predicted, estimate the number of cycles to failure. 25 mm + 6-mm D. 10 mmarrow_forwardCORRECT AND DETAILED SOLUTION WITH FBD ONLY. I WILL UPVOTE 1. The truss shown is supported by hinge at A and cable at E.Given: H = 4m, S = 1.5 m, α = 75⁰, θ = 33⁰.Allowable tensile stress in cable = 64 MPa.Allowable compressive stress in all members = 120 MPaAllowable tensile stress in all members = 180 MPa1.Calculate the maximum permissible P, in kN, if the diameter of the cable is 20 mm.2.If P = 40 kN, calculate the required area (mm2) of member BC.3. If members have solid square section, with dimension 15 mm, calculate the maximum permissible P (kN) based on the allowable strength of member HI.ANSWERS: (1) 45.6 kN; (2) 83.71 mm2; (3) 171.76 kNarrow_forward
- CORRECT AND DETAILED SOLUTION WITH FBD ONLY. I WILL UPVOTE 2: A wire 4 meters long is stretched horizontally between points 4 meters apart. The wire is 25 mm2 in cross-section with a modulus of elasticity of 200 GPa. A load W placed at the center of the wire produces a sag Δ.1.Calculate the tension (N) in the wire if sag Δ = 30 mm.2.Calculate the magnitude of W, in N, if sag Δ = 54.3 mm.3. If W is 60 N, what is the sag (in mm)?ANSWERS: (1) 562 N, (2) 100 N, (3) 45.8 Narrow_forwardCORRECT AND DETAILED SOLUTION WITH FBD ONLY. I WILL UPVOTE 4 : A cable and pulley system at D is used to bring a 230-kg pole (ACB) to a vertical position as shown. The cable has tensile force T and is attached at C. The length of the pole is 6.0 m, the outer diameter is d = 140 mm, and the wall thickness t = 12 mm. The pole pivots about a pin at A. The allowable shear stress in the pin is 60 MPa and the allowable bearing stress is 90 MPa. The diameter of the cable is 8 mm.1.Find the minimum diameter (mm) of the pin at A to support the weight of the pole in the position shown.2.Calculate the elongation (mm) of the cable CD.3.Calculate the vertical displacement of point C, in mm.ANSWERS: (1) 6 mm, (2) 1.186 mm, (3) 1.337 mm--arrow_forward1. Derive an expression for H(w) filter or bandpass/reject filter. = for the circuit below. Qualitatively determine if it's a high/lowpass L ell R ww Voarrow_forward
- 2. Obtain the transfer function, H(w) = 0 for the circuit below for R₁ = 1 kQ2, R2 = 10 kQ, and Vi C = 1 μF. What role, if any, does the capacitor play? Explain. R₁ R2 + C + Voarrow_forwardCORRECT AND DETAILED SOLUTION WITH FBD ONLY. I WILL UPVOTE 3 (15 points): A 12-meter-long precast pile segment is to be lifted from a trailer down to the ground and then set in place prior to driving by a crane.1. If two slings are to be used in lifting the pile to the ground, at what distance from the ends must the slings be placed for minimum bending due to its own weight?2. At what distance from the ends must the slings be placed for minimum shear due to its own weight?3. Using one sling to set the pile in a vertical position before driving at what distance from one end must the sling be placed for minimum bending due to its own weight?ANSWERS: (1) 2.48 m, (2) 3.00 m, (3) 3.51 marrow_forwardConsider blood flowing down an inclined plane. Derive an expression for the velocity profile assuming that blood follows the constitutive equation for a Casson fluid. You can either use a shell balance or the equation of motion in terms of shear stress as your starting point. What is the velocity at x = 0 and at x = xc?arrow_forward
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