Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN: 9781305494695
Author: Larry Jeffus
Publisher: Cengage Learning
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Chapter 22, Problem 21R
What types of information may appear on the reference line of a welding symbol?
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Q4/ A compressor is driven motor by mean of a flat belt of thickness 10 mm and a width of
250 mm. The motor pulley is 300 mm diameter and run at 900 rpm and the compressor
pulley is 1500 mm diameter. The shaft center distance is 1.5 m. The angle of contact of
the smaller pulley is 220° and on the larger pulley is 270°. The coefficient of friction
between the belt and the small pulley is 0.3, and between the belt and the large pulley is
0.25. The maximum allowable belt stress is 2 MPa and the belt density is 970 kg/m³.
(a) What is the power capacity of the drive and (b) If the small pulley replaced by
V-grooved pulley of diameter 300 mm, grooved angle of 34° and the coefficient of
friction between belt and grooved pulley is 0.35. What will be the power capacity in this
case, assuming that the diameter of the large pulley remain the same of 1500 mm.
You are tasked with designing a power drive system to transmit power between a motor and a conveyor belt in a manufacturing facility as illustrated in figure.
The design must ensure efficient power transmission, reliability, and safety. Given the following specifications and constraints, design drive system for this application:
Specifications:
Motor Power: The electric motor provides 10 kW of power at 1,500 RPM.
Output Speed: The output shaft should rotate at 150 rpm.
Design Decisions:
Transmission ratio: Determine the necessary drive ratio for the system.
Shaft Diameter: Design the shafts for both the motor and the conveyor end.
Material Selection: Choose appropriate materials for the gears, shafts.
Bearings: Select suitable rolling element bearings.
Constraints:
Space Limitation:
The available space for the gear drive system is limited to a 1-meter-long section.
Attribute 4 of CEP
Depth of knowledge required
Fundamentals-based, first principles analytical approach…
Chapter 22 Solutions
Welding: Principles and Applications (MindTap Course List)
Ch. 22 - List the five joint types used in welding.Ch. 22 - What stresses must a welded joint withstand?Ch. 22 - Sketch and label five edge preparations used for...Ch. 22 - Sketch a V-grooved butt joint, and label all of...Ch. 22 - Sketch a weld on plates in the 1G and 1F...Ch. 22 - Sketch a weld on plates in the 2G and 2F...Ch. 22 - Sketch a weld on plates in the 4G and 4F...Ch. 22 - Sketch a weld on plates in the 4G and 4F...Ch. 22 - Sketch a weld on a pipe in the 1G position.Ch. 22 - Sketch a weld on a pipe in the 5G position.
Ch. 22 - Sketch a weld on a pipe in the 2G position.Ch. 22 - Sketch a weld on a pipe in the 6G position.Ch. 22 - Sketch a weld on a pipe in the 6GR position.Ch. 22 - Why are some joints back gouged?Ch. 22 - Why is it usually better to make a weld in the...Ch. 22 - What is a prequalified joint?Ch. 22 - Why is cost a consideration in joint design?Ch. 22 - Why are welding symbols used?Ch. 22 - What types of information can be included on a...Ch. 22 - Why is a tail added to the basic welding symbol?Ch. 22 - What types of information may appear on the...Ch. 22 - What are the different classifications of welds...Ch. 22 - How is the reference line always drawn?Ch. 22 - What is meant if the weld symbol is placed below...Ch. 22 - How are the dimensions for a fillet weld given?Ch. 22 - What dimensions can be given for a plug weld?Ch. 22 - What two units are used to show the minimum shear...Ch. 22 - How is the strength of a seam weld specified?Ch. 22 - How can the groove be cut on the edge of a plate?Ch. 22 - Sketch and dimension a V-groove weld symbol for a...Ch. 22 - How is the removal of the backing strip noted on a...Ch. 22 - How are flanged edges formed?Ch. 22 - Sketch two NDT symbols illustrating different...
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