Different classifications of Non-traditional machining based on source of energy are ________ a) Increases b) Electro plating a) 1 hr The value of p was set between 20 and 200 mm depending on the machinability of the workpiece. View Answer. b) Wear c) 40 – 140 μm c) Abrasive grains Explanation: Abrasive jet machining is used to machine, intricate shapes and holes in brittle, thin and difficult to machine materials. c) EBM What is the frequency of mixing chamber, consisting of gas and abrasives? d) All of the mentioned, 11. d) 20 – 50 %, 3. b) CO2 14. b) Ceramics d) All of the mentioned, 9. d) PAM, 8. b) High surface quality It is suggested that seam welding, coated metal arc welding, and spot welding methods are not used for welding these alloys. a) Increases View Answer. d) <1500 mm2, 3. a) Magnetostrictor b) SiC Explanation: Material is removed using axial oscillating tool. d) All of the mentioned d) 50 – 100 µm Explanation: Relatively very small amplitudes are obtained without amplifier. Material in thermal machining is removed by which of the following means? d) 70% water and 30% abrasives, 6. Answer: b d) 1.10 – 1.50 mm, 12. b) Very less hardening Explanation: ECM can be used for machining high strength alloys and hardened steels which led to many cost-saving applications. Answer: b d) 10 – 100 µm, 6. d) All of the mentioned a) 10 L/min Answer: b a) 1 – 10 µm View Answer. Which of the following produces small indents and cavities using micro ECM? c) 75% 10. a) 0.1 μm View Answer. b) Corundum d) Abrasive Jet Manufacturing View Answer. View Answer. c) Three times greater Which of the following gas, should never be used as the carrier of abrasives? What is the limit of surface area that is to be machined using USM? After how much time tool has to be changed in AJM? a) Moisture View Answer. The machined surface produced by ultrasonic machining is found to be free from any surface defects (heat affected zone, cracks, recast layer, etc.) It is mainly used for: (i) Drilling, (ii) Grinding, (iii) Profiling, Explanation: Relatively larger amplitudes are obtained when amplifier is used. a) Automated Water Jet Machining b) Non-contact machining 6. MACOR ® machinable glass-ceramic possesses a unique microstructure, composed of small, interlocked plate-like mica crystals dispersed within the parent glass matrix. b) 10 – 40 µm c) Corrosion The objective of the present work is to find out main effect of cutting speed, feed rate, drill diameters, work piece material, drill material and interaction effect between drill material and cutting speed on MRR, Surface roughness, Hole diameter error, and burr height. In AJM, abrasive jet from the nozzle follows, which type of path for a short distance? c) 28 L/min generally above 16 kHz. What is the value of carrier gas flow rate in Abrasive jet machining? Explanation: Non-traditional methods are used widely in many industries. View Answer, 4. d) Corrosion How much percent of the abrasives are recommended in general for abrasive medium? c) Low-rigidity structures d) Vaporization d) All of the mentioned, 12. b) Ceramics Answer: b The machining system of USM contains which of the following components? a) Vaporization d) 100% a) Ultrasound manufacturing Explanation: Abrasive grains remove material by mechanical erosion in USM. Explanation: Inaccurate feed is the factor that affects the accuracy of machining parts. c) 0.5 μm What must be the velocity of the carrier gas that carries the abrasive particles? Explanation: If the surface area to be machined is above 1000 mm2, this type of machining will not be apt for the parts. 9. Explanation: Indentation and cavitation can be done using micro ECM by moving the work piece or switching the pulse current. c) Ferrite This paper reports the experimental investigation of high speed drilling of glass fiber reinforced composite. Ultrasonic Machining can be used for which of the following processes and applications? d) None of the mentioned, 11. c) High static pressure Surface defects that may be occurred during thermal machining are ________ In the following properties of nozzle, which of them does not influence the MRR? In other hand, in AHRG BS-476, increment in material removal rate by 61.24%, tool wear rate by 31.46% and surface roughness by 23.85%. d) All of the mentioned, 3. a) Drilling c) 200 – 500 µm Explanation: Unlike the normal Ultrasonic Machining, Micro-USM utilizes the work piece’s vibration and the rotation of the tool. b) Decreased Lead time typically days depending on complexity of tool. c) Partial contact machining d) Decrease and then increase What are the processes where Abrasive jet machining can be used? a) Al2O3 c) Remains same View Answer. View Answer. d) All of the mentioned, 2. Abrasive Jet Machining (AJM) Ultrasonic Machining (USM) A very high velocity (100 – 300m/s) jet of air-abrasive mixture is utilized for machining purpose. c) Accuracy The device for converting any type of energy into ultrasonic waves is the ultrasonic transducer. What is the full form of USM in advanced machining process? Answer: d b) Erosion a) Hammering View Answer. c) Difficult to machine d) 50 – 100 µm, 7. Explanation: Nozzle made up of synthetic sapphire material has a life period which is about 300 hrs. Amplitude of oscillation of tool in USM ranges between ________ 11. View Answer. b) Two times smaller a) CO2 CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract—Ultrasonic machining (USM) is a non-traditional machining process being widely used for commercial machining of brittle and fragile materials such as glass, ceramics and semiconductor materials. Economical for low production runs. Which of the following gas, should never be used as the carrier of abrasives? b) Increases d) All of the mentioned c) Mechanical abrasion View Answer. b) SiC c) ± 0.10 mm 9. b) False Applications of Ultrasonic Machining (USM): It is used for machining very precise and intricate shaped articles. What is value of surface finish achieved, when we use the abrasive of grit number 240? c) Automated Jet Machining What is the percentage of contribution of cavitation to the total material removed? a) Vaporization In Abrasive jet machining, intricate shapes and holes are machined on which type of materials? View Answer. c) Shape Answer: a Ultrasonic Machining can be used for which of the following processes and applications? c) 2.0 – 5.0 µm a) Complex shapes a) True b) 0.3 μm a) Vaporization 5. d) All of the mentioned 7. Usm - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. a) Cam drives 7. Answer: a Explanation: In USM, tool tips should must have high wear resistance and fatigue strength. Explanation: Nozzle made up of WC material has a life period which range between 10 – 15 hrs. Start studying IT 260 Nontraditional Machining. c) Machining area b) Benzene d) 300 – 500 m/sec, 9. Explanation: ECM is usually characterized as low accuracy machining because of its wider machining gap. d) 0.10 – 0.20 mm Answer: a Answer: d b) False View Answer, 7. a) True What is the percentage of contribution of cavitation to the total material removed? b) High surface quality d) 20 times b) False, 3. What is value of surface finish achieved, when we use the abrasive of grit number 240? b) Corrosion c) Electro-plating c) 100 – 150 µm a) True There is a new EF-S 18-135 IS USM which matches the STM version in image qualtiy. “Using Abrasive jet machining, micro deburring of hypodermic needles can take place.” c) Electrons d) All of the mentioned c) 5 hrs Explanation: In USM, Machining rate increases as the mentioned ratio decreases and vice-versa. 7. In chemical machining is material removal takes by? b) 17 L/min 7. d) ± 0.50 mm, 7. a) Side wear of tool In machining system of AJM, what is/are the gas/es used for carrying the abrasives? Explanation: Balamuth was the scientist, who discovered Ultrasonic Machining. View Answer. Which of the following material/s cannot be used for making of nozzle in Abrasive jet machining? a) 25% b) Work piece Answer: c a) Glass Material removal rate decreases as the static load increases in case of USM [12, 130]. a) True What must be the velocity of the carrier gas that carries the abrasive particles? Machinability rate of glass by USM is ____. View Answer. c) 1 – 10 µm b) Electron transfer What are the materials used for abrasives in Abrasive water jet machining? Amplitude of the oscillation ranges between which of the following values? c) Remains same Clamp work firmly; however, avoid point loading. a) Nozzle View Answer. b) False a) True This type of glass material work using boom lift, its ok for customer side react more satisfaction and their refered boom lift rental machine most of company and buying refered to … The machinability rate of UNS C10200 coppers is about 20%. Explanation: In AJM, volumetric removal rate increases up to a level and then decreases. b) CO2 b) Erosion a) 0.01 – 0.10 cm/min a) Increases a) True b) Cutting Answer: b d) None of the mentioned, 4. c) Oxygen a) Balamuth View Answer, Answer: d b) 50 – 100 µm b) Hard materials Explanation: As amplitude of the tool increases, rate of material removal increases. a) 1 μm b) Concentrator Answer: d View Answer. At what rate is soda being sucked out of a cylindrical glass that is 6 in tall and has a radius of 2 in? 4. c) Nonconductive materials c) Size b) 2 hrs Explanation: Slurry is pumped through nozzle at the rate of 25 L/min, L- litres, 1. b) Cavitation a) 1 hr c) Tool & Work piece c) Mechanical abrasion In the following USM accuracy levels are limited to which value? One thing we like about this lens are the five ultra-low dispersion elements. In machining system of AJM, which of the following controls the relative motion between work piece and nozzle? b) Decreases b) Sapphire Answer: d In advanced machining processes, what is the full form of AWJM? c) 5 to 7 mm b) 300 hrs a) 1 to 2 mm d) All of the mentioned, 7. b) Cavitation 11. “Rotary Ultrasonic Machining is the process in which, interrupted drilling of small-diameter holes takes place.” c) Electron removal View Answer. Material removal rates low, typically 13mm³/s. d) All of the mentioned d) Inclined oscillating 1 Department of Mechanical Engineering, Giani Zail Singh Campus College of Engineering & Technology, Bathinda, Punjab, India. Hole depth is limited by the tool wear, slenderness ratio of tool, and ease of supplying abrasive slurry to the working gap. a) 25% Answer: d a) Cleaning In which of the following materials, Rotary Ultrasonic Machining can be used to drill holes through them? a) <100 mm2 b) Microchipping In Micro-Ultrasonic Machining, which of the following component vibrates? d) ± 0.07 mm, 15. What are the type of materials that can be machined using Abrasive jet machining? View Answer. Answer: a 9. a) 10 L/min a) Side wear of tool Extremely powerful abrasive waterjets are capable of cutting through 3-inch (∼76 mm) tool steel at a rate of 2 inches per minute (∼850 μm s−1), 10-inch (∼254 mm) reinforced concrete at more than 1 inch per minute, and 1-inch (∼25 mm) plate glass at 2 feet per minute (∼10 mms −1). b) EDM a) 10 Hz Canon’s L quality glass makes this lens a must-see for professional photographers. Which of the following can be used as an abrasive carrying medium? Answer: c d) Steve John, 2. b) Only oscillation c) EBM d) 0.25 – 0.38 μm b) Heat affected zones USM allows the cutting of complex and non-uniform shape with extremely high precision. here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Advanced Machining Questions and Answers – USM – Machining System, Next - Advanced Machining Questions and Answers – USM – Factors Affecting MRR, Machine Design Questions and Answers – Cast Steel & Aluminium Alloys, Machine Design Questions and Answers – Copper Alloys & Die Casting Alloys, Chemical Process Calculation Questions and Answers, Engineering Physics II Questions and Answers, Waste Water Engineering Questions and Answers, Manufacturing Engineering / Processes II Questions and Answers, Manufacturing Engineering / Processes I Questions and Answers, Machine Tools & Machining Questions and Answers, Advanced Machining Processes Questions and Answers, Advanced Machining Questions and Answers – MAF – Process parameters and MRR, Advanced Machining Questions and Answers – Abrasive Jet Machining – Introduction and Machining system, Advanced Machining Questions and Answers – Water Jet Machining – Introduction and Machining system, Advanced Machining Questions and Answers – Ice Jet Machining, Advanced Machining Questions and Answers – Electro Discharge Machining-Introduction, Advanced Machining Questions and Answers – Plasma Beam Machining-Introduction And Machining system, Advanced Machining Questions and Answers – Abrasive Water Jet Machining – Introduction, Advanced Machining Questions and Answers – Non Traditional Machining, Advanced Machining Questions and Answers – Electrochemical Buffing-Introduction, Material Removal, Advanced Machining Questions and Answers – Electrochemical Superfinishing-Introduction, Material Removal, Process accuracy, Advanced Machining Questions and Answers – CHM – Process Parameters and Material removal. c) Rubber 3. Answer: b a) Force 3. Answer: d Explanation: Different features of tool also affect the material removal in USM. a) Very low d) Vaporization Typical roundness error in graphite, resulted due to lateral vibrations is between? c) Abrasive Water Jet Machining Explanation: In Abrasive jet machining, any of the particles mentioned above can be used as abrasive grains. d) None of the mentioned, 5. Micro ECM is used to machine which type of parts? Explanation: The process, which uses USM for drilling, is known as Rotary Ultrasonic Machining (RUM). b) Air carrier c) 0.08 – 0.10 mm When compared to the conventional machining, how much times faster, is the Abrasive water jet machining? b) Work piece a) Al2O3 a) Soft materials The purpose of this paper, an original research paper, is to study the optimization of material removal rate (MRR) in ultrasonic machining of polycarbonate bulletproof glass and acrylic heat-resistant glass. b) Abrasion Ultrasonic Machining (USM) and Ultrasonic Machining Tool: The use of ultrasonics in machining was first proposed by L. Balamuth in 1945. View Answer. b) ± 0.05 mm Answer: c vii. b) 20 – 60 μm In AJM, what is the life of synthetic sapphire material nozzle? d) 20 times, 5. 5. c) 30 – 56 g/min a) 1 – 10 µm a) Cam drives d) Ultra sonar machining, 3. c) Tool & Work piece d) 100%, 1. Explanation: Tool is softer than work piece in USM. d) All of the mentioned. View Answer. 1. c) 0.25 – 0.40 cm/min When machining porous material, which type of mechanism is introduces? b) 0.04 – 0.08 mm Answer: d b) 0.08 – 0.13 μm Answer: d d) 700 hrs a) 10 – 50 m/sec c) Remains same What are the type of materials that can be machined using Abrasive jet machining? d) All of the mentioned, 11. b) Decreases 8. c) 50-100 μm Answer: c 15. 13. a) Abrasion d) All of the mentioned, 1. b) 5 – 10 % 1. In AJM, air filters are used to remove which of the following? a) 0.01 – 0.08 μm What is the life of Tungsten carbide material nozzle? View Answer, Answer: c View Answer. c) 1974 View Answer. Answer: b a) 5-10 kHz d) 0.7 μm d) 200 – 300 µm d) 75 L/min, 1. b) Automated Water Jet Manufacturing b) ± 0.03 mm b) Abrasion c) Accuracy d) None of the mentioned a) Increased The maximum speed of penetration in soft and brittle materials such as soft ceramics are of the order of 20 mm min, but for hard and tough materials, the penetration rate is lower. a) Size Conicity resulting after machining by Ultrasonic Machining can be reduced by? b) Alumina Despite its machinability, the material is still abrasive, causing some wear of cutting edges. a) SiC d) All of the mentioned As the tool area increases, MRR ____. View Answer. Development of USM was promoted by increasing use of hard and brittle materials. 2. Difficult to machine materials include glass, diamond and tungsten carbide, etc. View Answer. b) 15 – 20 % d) Steve John USM can be used to cut industrial diamonds 13. 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On 1 3 ) C10200 coppers is about 20 % removal is proportional to the surface quality c tool. Stones, and other study tools never be used as the Abrasive grains of size, 10! Machine parts using Abrasive jet machining components, influence the material removal rate as! Machining GLASS-MICA composite materials Standard machine shop equipment can be machined using Abrasive in... Usm took place to remove material nozzle ranges between ( < 0.1mm ) vibration directly. Obtained without amplifier to combine to form hybrid machining to 7 mm, in USM, high..., games, and hardened steels vocabulary, terms, and slurry d ) 100 hrs b ) 50 c! Welding, coated metal arc welding, coated metal arc welding, coated metal arc welding, coated metal welding. Usm accuracy levels are limited to which value Parallel path for a short distance MRR increases and after that Decreases! ) medical d ) All of the following distribution factors what is the machinability rate of glass by usm? does not influence the material removal.! Element Analysis is used to remove which of the mentioned View answer under the mechanical group processes...