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The figure below shows a symbolic representation of the surface texture in a perpendicular lay orientation with indicative values (I through VI) marking the various specifications whose definitions are listed below. P: Maximum Waviness Height (mm); Q: Maximum Roughness Height (mm); R: Minimum Roughness Height (mm); S: Maximum Waviness Width (mm); T: Maximum Roughness Width (mm); U: Roughness Width Cutoff (mm); The correct match between the specifications and the symbols (I to VI) is
State whether the following statement is true or false, about Abrasive jet machining. “Using Abrasive jet machining, micro deburring of hypodermic needles can take place.”
State whether the following statement is true or false about Abrasive water jet machining. “A material, whose material removal rate is higher, produces larger surface roughness.”
When compared to Abrasive water jet machining, how are the material removal rates in Ice jet machining?
Consider the following statements with reference to Jet stream. 1. The Jet Stream is a geostrophic wind. 2. There are two permanent jet streams – subtropical jets at mid-latitudes and polar front jets at lower latitudes. 3. Temperature also influences the velocity of the jet stream. The lower the difference in air temperature, the faster the jet stream. Which of the statements given above is/are NOT correct?
Abrasive flow value in Abrasive water jet machining will range between which of the following values?
In Abrasive water jet machining, how are the abrasives fed into the water jet stream?
What is the grain size of abrasive particles, which are often used for Abrasive water jet machining?
Arrange the processes in the increasing order of their maximum material removal rate. Electrochemical Machining (ECM) Ultrasonic Machining (USM) Electron Beam Machining (EBM) Laser Beam Machining (LBM) and Electric Discharge Machining (EDM)
Which of the following statements are correct statements? (a) Masonry check dams are used for controlling gully erosion and water harvesting. (b) soil cloudiness, surface roughness, roughness, soil curst and soil moisture are the main factors affecting water erosion. (c) In Agronomic measures water erosion is controlled by appropriate crops and cropping systems. (d) Stubble mulching and minimum tillage be practiced to minimise wind erosion.