Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN: 9781305494695
Author: Larry Jeffus
Publisher: Cengage Learning
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Textbook Question
Chapter 16, Problem 21R
Why must the tube of a flow meter be vertical?
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TRUE or FALSE
Pitot tube is an insertion meter. When this is located at the center, the flow that will be measured will be minimum.
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Chapter 16 Solutions
Welding: Principles and Applications (MindTap Course List)
Ch. 16 - What early advancements made the GTA welding...Ch. 16 - What metals were weldable only by the GTAW process...Ch. 16 - Which two of tungsten's properties make it the...Ch. 16 - Why must the tip of the tungsten be hot?Ch. 16 - Prob. 5RCh. 16 - What functions regarding tungsten heat do the...Ch. 16 - What problem can an excessively large tungsten...Ch. 16 - What holds the molten ball of tungsten in place at...Ch. 16 - Using Table 15-1, answer the following: a. What...Ch. 16 - What does adding thorium oxide do for the tungsten...
Ch. 16 - How can the end of a tungsten electrode be shaped?Ch. 16 - Why should a grinding stone that is used for...Ch. 16 - Why should the grinding marks run lengthwise on...Ch. 16 - What are three ways of breaking off the...Ch. 16 - What is the correct color to use on the balled end...Ch. 16 - Why should the torch be as cool as possible?Ch. 16 - What will happen to a water-cooled torch cable if...Ch. 16 - Why must shielding gas hoses not be made from...Ch. 16 - What materials can be used to make nozzles?Ch. 16 - What problem can a long nozzle cause to the...Ch. 16 - Why must the tube of a flow meter be vertical?Ch. 16 - What is the heat distribution with DCEN welding...Ch. 16 - What is the heat distribution with DCEP welding...Ch. 16 - What is the heat distribution with AC welding...Ch. 16 - Why must AC welding power use high frequencies to...Ch. 16 - Why are argon and helium known as inert gases?Ch. 16 - Why is argon's ease of ionization a benefit?Ch. 16 - What makes helium difficult to use for manual...Ch. 16 - What are the benefits of adding hydrogen to argon...Ch. 16 - What is the purpose of a hot start?Ch. 16 - Using Table 16-3, determine the gas post flow time...Ch. 16 - What functions can a remote control provide the...Ch. 16 - Using Table 16-4, determine the minimum gas flow...
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- What is the rate of flow of water passing through a pipe with a diameter of 20mm and a speed of 0.5m/sec?arrow_forwardIn order to measure the flow with a Venturimeter, it is installed in Horizontal line inclined line with flow upwards inclined line with flow downwards Any direction and in any location Oarrow_forwardPitot tube is an instrument is not used for measuring the velocity at any point in a pipe Select one: True Falsearrow_forward
- The velocity of the liquid flowing through the divergent portion of a Venturimeter is increases Select one: True False A venturi meter is used to measure discharge Select one: True Falsearrow_forwardIt is the vertical measurement from the center of the pipe to the maximum height that the water can reach when a piezometer is attached to a pipe or conduit. Velocity Head Elevation Head Pressure Head None of the abovearrow_forwardWrite down the operating principle of Venturi meter.arrow_forward
- A Venturi tube narrows down from 4 inches diameter to 2 inches. What is the rate of flow of water if the pressure at the throat is 2 lbs/sq.in less than at the larger section? O 0.388 cu.ft/sec O 0.985 cu.ft/sec O 0.585 cu.ft/sec O 0.215 cu.ft/sec O 0.645 cu.ft/secarrow_forwardTrue or False. Frome Poiseuille's law, in order to maintain a constant flow rate, the pressure difference across a tube has to decrease when the viscosity of the fluid increases.arrow_forwardA venturi meter is used to measure velocity for varying pressure head Select one: True Falsearrow_forward
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