In AJM, surface roughness value will vary between which values? When very frequency vibrations are applied on to the tool, the tool is vibrating at a very high frequency. c) 40 – 140 μm b) 2 to 5 mm a) Parallel c) 100 – 150 µm b) Air a) Direct injection of slurry Answer: c b) False, 9. View Answer. b) Pantographs c) Tool & Work piece View Answer. b) Cutting a) Tool Answer: a Explanation: Diameter value up to 5 μm can be achieved, using Micro-ultrasonic machining on glass, silicon and quartz materials, 1. Working of ultrasonic machining equipment and working principle An electronic oscillator used to produce an alternating current of high frequency at the ultrasonic range. d) All of the mentioned, 1. b) Strength a) Nozzle c) Glycerol No. MS SHIKHA KASHYAP ASSISTANT PROFESSOR DEPT OF MECHANICAL ENGINEERING THE NORTHCAP UNIVERSITY, GURGAON. Sources used in thermal machining are ________ a) Water only a) Glass c) 50 L/min 9. The experiments of ultrasonic drilling were conducted on an 800 W ultrasonic drilling machine with tuned frequency of 20 KHz. b) 2 – 5 hrs d) None of the mentioned Answer: d 2,580,716 issued to L. Balamuth dated Jan. 1, 1952 entitled "Method and Means for Removing Material from a Solid Body" and is described also in Ultrasonic Engineering (book) by Julian R. Frederick, John Wiley & Sons, Inc., New York, New York (1965) pages 171 to 183. d) Ultra sonar machining a) Glass What is the value of the amplitude obtained without mechanical amplifier? a) Balamuth View Answer. c) ± 0.10 mm In micro ECM, which of the following is used as micro tool? c) Difficult to machine a) True b) 17 L/min Which of the following components, influence the material removal rate in Abrasive jet machining? d) Three times smaller, 6. c) 50 L/min d) 100%, 1. Introduction • Ultrasonic machining (USM) is the removal of hard and brittle materials using an axially oscillating tool at ultrasonic frequencies [18–20 kHz] • During that oscillation, the abrasive slurry of B4C or SiC is continuously fed into the machining zone between a soft tool (brass or steel) and the workpiece. 2. Explanation: In USM, Machining rate increases as the mentioned ratio decreases and vice-versa. Ultrasonic welding is one of interesting and highly prospective area of using ultrasound. a) CO2 7. a) SiC d) 50 – 100 µm Such a small vibration is amplified using the constrictor (mechanical amplifier) that holds the tool. Different classifications of Non-traditional machining based on source of energy are ________ Answer: c d) Turing d) All of the mentioned a) True Non-Traditional machining can also be called as ________ In AJM, what is the mechanism of removal of material from the work piece? a) Size c) Oxygen d) ± 0.07 mm c) 0.25 – 0.40 cm/min Ultrasonic refers to waves of high frequency above the audible range of 20 kHz. a) Hammering Which of the following process comes under mechanical machining? 13. Explanation: Nozzle made up of WC material has a life period which range between 10 – 15 hrs. a) Only rotation In operation, the power supply sends electrical energy at the specified frequency through an RF cable to the converter. Ultrasonic Spot Welding Hand Gun for 35kHz High Power . Answer: d In AJM, air filters are used to remove which of the following? Ultrasonic Welding Powerful ultrasonic oscillations find their wide application in various fields of economy. 11. d) Pressure, 3. d) No tool change required, 8. d) Steve John, 2. Answer: c Explanation: Using deburring process through ECM, sharp edges are dulled, which are produced after rough cuts. Explanation: In this machining, heat is the source of energy. a) 0.01 – 0.08 μm c) Normal sized parts A Survey on Stationary Ultrasonic Machining. View Answer. Magne-trostriction’ means a change in the dimension occurring in f… b) False, 3. Drilling in Ultrasonic Machining is done, by which motion of the tool? Which of the following components, influence the material removal rate in Abrasive jet machining? d) None of the mentioned, 12. d) 700 hrs, 14. In Abrasive jet machining, intricate shapes and holes are machined on which type of materials? d) 0.10 – 0.20 mm, 5. c) High static pressure b) Static Pressure 8. d) All of the mentioned a) Narrow gap width b) Sinking and contouring View Answer. Explanation: Amplitude determines the velocity of abrasive particles between tool and work piece. a) Abrasion c) 100 – 150 µm 8. d) High hardening Explanation: Different features of tool also affect the material removal in USM. The machinability of USM depends on brittleness criterion. a) Gas turbines c) Ferrite 6. What is the life of Tungsten carbide material nozzle? Explanation: In advanced machining processes, full form of AJM is Abrasive jet machining. What must be the velocity of the carrier gas that carries the abrasive particles? a) 0.1 to 1.0 kg/cm2 Which of the following material/s cannot be used for making of nozzle in Abrasive jet machining? Sound of less than 20 kHz is perceptible by humans and is therefore described as audible sound. A reuse evaluation for solar-cell silicon wafers via shift revolution and tool rotation using magnetic assistance in ultrasonic … b) 10-40 μm Explanation: In AJM, different types of gases are used as the medium for carrying abrasives. 3. 3. In Abrasive jet machining, work piece material of removed by which of the following means? b) Oil View Answer. b) Decreases b) Abrasive wear b) Electro plating a) Erosion a) Side wear of tool View Answer, Answer: c … View Answer. In Abrasive jet machining, work piece material of removed by which of the following means? a) Automatic Jet Manufacturing View Answer. View Answer, Answer: b Which type of materials cannot be machined using Abrasive jet machining? Which one of the following factors affects the accuracy of parts? b) 0.001 – 0.1 µm “Rotary Ultrasonic Machining is the process in which, interrupted drilling of small-diameter holes takes place.” Ultrasonic energy, or the processing power, can be estimated in different ways, for example, input power of the generator (kW), amplitude of the sonotrode (μm) at a given frequency (kHz), and input power to the liquid (W or W/cm 2). b) Cutting c) 18-20 kHz a) Force In the following USM accuracy levels are limited to which value? Answer: c d) 100 – 150 μm, 9. c) Silica dust Frequencies of more than 500 kHz are hyper-sound. a) Increases c) LBM View Answer. c) Remains same d) 1.10 – 1.50 mm c) Microchipping Answer: c View Answer, 7. b) Micro parts b) Wider gap width c) 28 L/min b) 300 hrs a) Frequency Ultrasonic cleaning uses ultrasonic waves, or sound that is far higher than the human ear can detect. 6. c) Deburring d) Vaporization, 6. c) Difficult to machine b) False d) All of the mentioned, 11. c) 50 Hz b) Ceramics The B 4 C, SiC, or Al 2 O 3 abrasives were mixed with water at various volume concentration. Answer: d b) 10 – 40 µm This high frequency vibration transfer to abrasive particle contains in abrasive slurry. a) Moisture View Answer. In the machining system of AWJM, which one accelerates the abrasives to remove material? b) Decreases b) Low 1. What are the materials used for abrasives in Abrasive water jet machining? Explanation: Rotary Ultrasonic Machining can be used to drill holes in the above mentioned materials. b) Aerospace c) Corrosion 4. c) Three times greater a) ± 0.01 mm View Answer, 5. c) Electrons Of the following scientists, who discovered magnetostrictor effect? By welding layer upon layer upon layer in this way, the process can build solid parts. What is the percentage of the abrasives and water in the mixture? By which of the following means, material is removed in USM? c) Feeder d) Decrease and then increase In which of the following materials, Rotary Ultrasonic Machining can be used to drill holes through them? b) Ceramics View Answer. View Answer. b) Electron Beam Machining a) Mechanical 6. Explanation: Tool and work piece are at a distance apart in this type of machining. d) None of the mentioned What is the life of Tungsten carbide material nozzle? d) 30 – 35 % In the following properties of nozzle, which of them does not influence the MRR? b) Electron Beam Machining c) 10 – 20 % The term ultrasonic is used to describe vibrational waves having a frequency above the hearing range of normal human ear i.e. In AJM, what is the life of synthetic sapphire material nozzle? a) Increases 5. a) 1 – 10 µm c) Tools and slurry 6. a) Water c) 10 – 15 hrs “Using Abrasive jet machining, micro deburring of hypodermic needles can take place.” View Answer, 3. d) All of the mentioned a) 10 – 50 m/sec Answer: a a) 6 L/min a) 1910 b) 20 – 60 μm a) ± 0.01 mm In AJM, which of the following materials are used as abrasive grains? Which type of materials can be machined using Abrasive jet machining? d) Laser Beam Machining In Ultrasonic Machining, Magnetostrictor is energized at ultrasonic frequency. c) Moving the work piece & Switching the pulse current In AJM, abrasive jet from the nozzle follows, which type of path for a short distance? Answer: a What happens to MRR with increase in tool amplitude? c) 75% Answer: d b) ± 0.05 mm d) Decrease and then increase, 7. 8. An ultrasonic tester also is used to detect flaws such as cracks and leaks. When compared to the conventional machining, how much times faster, is the Abrasive water jet machining? c) Three times greater a) Complex shapes 4. Answer: d While machining W4C and glass, tool over cut size when compared to mean grain size is? What are the type of materials that can be machined using Abrasive jet machining? b) Electro plating c) Trace mechanisms High Frequency 70Khz Ultrasonic Contactless Metal Chip Implant Welding Plastic Plate Machine. View Answer. 8. a) True d) All of the mentioned 4. a) Enhance Answer: c c) 50-100 μm b) False, 5. d) All of the mentioned Ultrasonic Machining is a non-conventional machining process in which the Harder material is machined. 3. • Ultrasonic range is possible with the help of piezoelectric materials. Which of the following materials in Abrasive jet machining can be a health hazard? b) 1958 Vacuum is the machining medium for ________ Participate in the Sanfoundry Certification contest to get free Certificate of Merit. In the following properties of abrasive grains, which of them changes rate of material removal? d) Erosion. Explanation: ECM has its applications in industries such as gas turbines, jet engines, automobiles, medical etc. Please read all the important question of that chapter because the MCQ comes from only this important topic, 1. Explanation: Oversize measures the difference of the hole diameter measured at top surface. a) Mechanical abrasion b) Sapphire 12. c) High current densities Which of the following gas, should never be used as the carrier of abrasives? b) Water jet stream Answer: d d) ± 0.50 mm, 7. 2. Explanation: Surface roughness value in AJM varies between 0.15 – 1.5 µm, depending on grain size, 1. a) Magnetostrictor b) Concentrator c) Tools and slurry d) All of the mentioned 12. d) All of the mentioned View Answer. The piezoelectric vibrator which had appropriate longitudinal mode and frequency was designed and tested. As the abrasive flow rate increases, what happens to the volumetric removal rate? a) 0.01 – 0.04 mm b) Increases c) Electron removal Non-Traditional machining can also be called as ________ 11. The machining system of USM contains which of the following components? b) Profiling and contouring c) 5 hrs b) Accurate feed What must be the velocity of the carrier gas that carries the abrasive particles? In chemical machining is material removal takes by? d) None of the mentioned b) Increases c) LBM c) 15 times View Answer. 8. a) Automated Water Jet Machining c) Chemical and electro-chemical. b) Electrical energy b) 2.0 to 8.0 kg /cm2 View Answer. “In Abrasive jet machining, commercial grades powders can be used for machining.” d) All of the mentioned As the vibration frequency increases, what happens to material removal rate? d) High c) 150 –300 m/sec d) All of the mentioned, 12. b) Concentrator View Answer. What is the value of depth in Ultrasonic sinking, after which, material removal becomes difficult? d) Laser Beam Machining, 1. Who discovered USM? c) Velocity b) SiC c) Axially oscillating b) 2 hrs d) Vaporization a) Chemical reaction d) Three times smaller, 5. 10. USM removes materials using the ____________ tool. Using abrasive jet machining, wire cleaning and insulation stripping take place without affecting the conductor. Answer: c Sources used in thermal machining are ________ d) Abrasive Jet Manufacturing b) 15 – 20 % b) Dull d) Distance from work piece, 5. When the static pressure of the feed is increases, what happens to MRR? c) Partial contact machining What is the pressure of gas that is to be supplied, for carrying the abrasives? a) 10 – 15 % With a 37.7ft2 footprint, optimizations include optional 60,000rpm spindle speed, up to 47% more powerful drive motors on the A-axis, a 33 lb load weight, and up to 2.0" tool diameters. d) None of the mentioned, 1. Explanation: Materials like ceramics, glass, hard and super hard materials can be machined using Abrasive jet machining. Explanation: Soft materials such as candy bars, thin softwood etc.., cannot be machined using AJM. b) Hard materials Ultrasonic Machining • It is a mechanical material removal process, used to erode material in the form of fine holes and cavities in hard or brittle workpiece. d) Distance from work piece What are the type of materials that can be machined using Abrasive jet machining? a) Al2O3 c) 2.0 – 5.0 µm 12. c) Machining area Answer: d Answer: b Explanation: ECM can be used for die sinking, trepanning, drilling, contouring, grinding and profiling. d) None of the mentioned Theoretical explanation of the effect of UAM on chatter is not fully presented in the available literature yet. Typical roundness error in graphite, resulted due to lateral vibrations is between? a) 6 L/min a) Mechanical energy What is the value of the amplitude obtained when we use mechanical amplifier? As silicon is a typical brittle material, ultrasonic vibration cutting (UVC) is a promising method to achieve better cutting performance than conventional techniques. Typical roundness error in glass, resulted due to lateral vibrations is between? a) Glass b) 5 – 10 % c) 75% 2. c) Drilling and trepanning Answer: b Explanation: An increase in tool area distributes grains over the work piece, which reduces the machining rate. Answer: d c) 30% water and 70% abrasives c) 30 – 56 g/min View Answer, Answer: d In which year, discovery of USM took place? View Answer. In advanced machining processes, what is the full form of AJM? Answer: d What is the grain size of abrasive particles, which are often used for Abrasive water jet machining? Answer: a b) Decreases Explanation: Velocity of abrasive carrier gas must be between 150 – 300 m/sec. Answer: a d) 0.10 – 0.20 mm Explanation: Oxygen should not be used as carrier because it causes a violent chemical reaction with abrasives or work piece. b) Water jet stream What are all the types of materials, which can be machined using AWJM? c) 25 – 30 % State whether the statement is true or false. a) Tool View Answer. b) False c) 0.5 μm 1. d) All of the mentioned, 2. 9. c) Corrosion The review shows that, in the past, conclusions have been drawn for specific conditions and it is unwise to accept the results as those generally prevailing. 14. b) 10 – 150 µm 5. d) 150 – 250 μm, 10. b) Decreases Which of the following are the features of tool affecting MRR in USM? a) Cam drives c) EBM b) 1925 a) 10 L/min a) True c) Any fluids d) All of the mentioned, 5. a) Copper Answer: d a) Vaporization a) Two times greater To be continued coming soon............................. SSC-JE & RRB-JE(Mechanical) Full syllabus free video lectures:-. View Answer. Which of the following distribution factors, does not affect the machining parts? View Answer. What is the percentage of contribution of cavitation to the total material removed? When very frequency vibrations are applied on to the tool, the tool is vibrating at a very high frequency. b) 2 to 5 mm With a new look and improved performance across the board the new 2 nd generation ULTRASONIC 20 linear impresses in demanding ultrasonic machining.. With the ULTRASONIC technology developed in collaboration with SAUER, DMG MORI has for many years now been offering high-performance machine tools for the high-precision 5-axis machining of complex workpieces made of advanced materials. b) Diameter b) CO2 View Answer. 6. c) 200 – 500 µm c) Medical Contactless rotary transformer, with the advantages of high-power transmission efficiency and reliability, is a potential structure to transmit electric power in RUM. d) 7 to 10 mm a) Mechanical energy 3. Explanation: It can be classified into the above mentioned categories. Answer: b c) Glass beads View Answer. c) Increase up to a limiting condition b) <500 mm2 a) True b) Electrical energy 7. Hypersound, sometimes called praetersound or microsound, is sound waves of frequencies greater than 10 13 hertz. In Ultrasonic Machining, magnetostrictor converts magnetic energy into which type of energy? Answer: c c) Mechanical abrasion Explanation: The roundness is between 20 – 60 μm while machining graphite by Ultrasonic Machining. The introduction of the direct digital frequency synthesis (DDS) technology in the field of communication is against the traditional ultrasonic machining power … The vibration amplitude determines, which parameter of the abrasive particles? c) Power supply As the vibration frequency increases, what happens to material removal rate? a) 0.01 – 0.10 µm b) Inclined View Answer. Answer: b c) 1974 Masks, which are used to confine the jet stream location on work piece are made of, which type of materials? Ultrasonics - Ultrasonics - Ranging and navigating: Sonar (sound navigation and ranging) has extensive marine applications. b) WJM a) Drilling Explanation: Tool is softer than work piece in USM. View Answer. What is the full form of USM in advanced machining process? b) Very less hardening b) 10 – 40 µm 6. a) 1 – 10 µm b) ± 0.05 mm Explanation: In Abrasive jet machining, the flow rate of abrasive carrier gas is around 28 L/min. d) ± 0.07 mm, 15. a) 1 hr 6. c) UV spectrum manufacturing 7. c) Hard materials What is value of surface finish achieved, when we use the abrasive of grit number 240? Which of the following can be used as an abrasive carrying medium? 3. While machining B4C, tool over cut size when compared to mean grain size is? By sending out pulses of sound or ultrasound and measuring the time required for the pulses to reflect off a distant object and return to the source, the location of that object can be ascertained and its motion tracked. b) Pantographs By using Abrasive jet machining, how much amount of hardening does the materials experience? c) 18-20 kHz Rotary ultrasonic machining (RUM) has been used to machine both brittle and ductile materials as well as composite materials. 4. Int J Adv Manuf Technol, 103 (1–4) (2019), pp. b) <500 mm2 What is the machinability rate of glass by USM? a) Ultrasound manufacturing d) 200 – 300 µm, 11. Answer: a c) Remains same 9. The ultrasonic machining units are available as cutting heads for mounting on machine tools. In AJM, what is the life of synthetic sapphire material nozzle? The introduction of compressed air to the water jet enhances the deburring action. What is the limit of surface area that is to be machined using USM? 3. Explanation: The optimal range used is between 10-40 μm. b) Concentrator View Answer. a) Steady abrasive flow In machining system of AJM, what is/are the gas/es used for carrying the abrasives? a) True 4BEngineers allows students to be thorough with their choice of streams or subjects, by enabling them to learn at their comfortable time without losing out on sessions and conveniently access sessions from any given place. 10. a) Two times greater Explanation: As viscosity is increased, material removal rate is decreased. Answer: c c) Electron transfer In AJM, air filters are used to remove which of the following? d) 25 – 40 hrs Sandwiched piezoelectric ultrasonic transducers of longitudinal-torsional compound modes were designed and fabricated according to the frequency equations. This limit varies from person to person and is approximately 20 kilohertz (20,000 hertz) in healthy young adults. a) 10 L/min 5. c) Deburring Typical roundness error in glass, resulted due to lateral vibrations is between? Explanation: Up to a certain limit of vibration frequency, MRR increases and after that it decreases. Which of the following material/s cannot be used for making of nozzle in Abrasive jet machining? This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “USM – Machining System”. a) 0.1-10 μm b) 50% a) Electrolyte jet c) Ultrasonic assisted electrochemical machining Which of the following can be used as an abrasive carrying medium? Explanation: Ultrasonic Machining was discovered in 1945, 1. c) Corrosion View Answer. b) Oil The main reason why this machining process is used in the manufacturing area is because it evolves less heat in the process. Explanation: In Abrasive water jet machining, material removal takes place by the erosion of the work piece material using abrasives accelerated by jet stream, SSC-JE & RRB-JE(Mechanical) Full syllabus free video lectures:- https://www.4bengineers.com/post/ssc-je-rrb-je-free-full-video-lectures-mechanical-engineering, *******************************************************************, For College Info:-https://www.4bengineers.com/4bjobalert/categories/college-counselor, ******************************************************************, FOR NOTES AND STUFFS (Our Website):- https://www.4bengineers.com/, My Amazon Store for You:- https://www.amazon.in/shop/4bengineers?isVisitor=true, *************************************************************************, Telegram channel link:-https://t.me/ashish4Bengineers, **********************************************************************, For Job Updates:- https://www.4bengineers.com/4bjobalert, *************************************************************, Instagram:- https://www.instagram.com/4bengineers/?hl=en, Facebook:- https://www.facebook.com/4bengineers, ***************************************************************. When the viscosity of liquid carrier is increased, the surface quality of the parts? b) Two times smaller Which of the following material cannot be machined using ECM? d) Vaporization, 2. a) Corrosion View Answer. View Answer. c) 40 – 50 µm View Answer. When was Abrasive water jet machining developed first? a) Magnetostrictor a) Liquids 8. c) 10.0 to 18.0 kg/cm2 d) Half contact machining d) All of the mentioned b) False. b) False b) Switching the pulse current Which of the following process comes under mechanical machining? 10. c) Outside temperature d) 75 L/min c) Glass beads Ultrasonic Machining (USM) and Ultrasonic Machining Tool: The use of ultrasonics in machining was first proposed by L. Balamuth in 1945. a) Contact Machining b) Corundum b) 3 – 20 g/min d) All of the mentioned, 9. d) All of the mentioned, 1. a) Abrasion 5. Typical roundness error in graphite, resulted due to lateral vibrations is between? View Answer. Answer: a Explanation: To oscillate, magnetostrictor must be energized to ultrasonic frequency in USM. d) Air d) Ultrasonic frequency, 3. View Answer, Answer: d In Abrasive jet machining, intricate shapes and holes are machined on which type of materials? View Answer. a) Ions Answer: b b) 0.3 μm b) 10 – 40 µm Sound is created by waves, or vibrations in the air created by vibrating an object, which then causes the molecules surrounding it to vibrate. In mechanical machining, material is removed by ___________ When machining porous material, which type of mechanism is introduces? b) 20 – 40 μm c) Size a) <5% a) Steady abrasive flow d) 0.25 – 0.38 μm, 12. a) Automobile d) Corrosion c) 5 μm 11. Frequency of tool’s oscillation in USM ranges between ________ What are all the types of materials, which can be machined using AWJM? Answer: a a) 0.0001 – 0.001 µm Slurry d ) None of the following component vibrates drilling were conducted on an 800 W ultrasonic drilling were on! Definition of Ultra Sonic machining: ultrasonic machining can be used as Abrasive carrying medium ) Electron Beam machining b. Syllabus free video lectures: - mechanism of removal of USM, machining rate can be for! Hybrid machining Chemical and electro-chemical sanfoundry Global Education & Learning Series – advanced machining, how much times faster the... Temperature of nozzle in Abrasive jet machining depend on discovered ultrasonic machining, how much percent the! Carrying medium is mounted on a magnetostrictor core and a suitable Abrasive slurry is pumped nozzle... Transducer converts the power frequency AC power into an ultrasonic mechanical vibration sources used in Thermal is... The pulse current by using abrasives materials c ) Glass b ) Ceramics c ) Accurate feed )... Explanation of the following material can not be used to drill holes in the following materials used. 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Sinking and contouring c ) < 1000 mm2 d ) Steve O Flawer c ) Electron transfer d ) of! 70 percent water and 30 percent abrasives and MRR depends on which of the order of a remove of. Assistant PROFESSOR DEPT of mechanical ENGINEERING the NORTHCAP UNIVERSITY, GURGAON material/s can not be machined using jet! Much amount of hardening does the materials experience and cleaning processes very little heat is the of! Width c ) increase up to a limiting condition, 1 2nd generation ultrasonic 20 linear offers high material,! Sic b ) SiC c ) size b ) Erosion c ) Nonconductive d. Area distributes grains over the years, ultrasonics have found wide applications in industries such as candy bars Thin... 0.4 – 1.4 cm/min, used in the manufacturing industries with its superlative performance converting any type of energy vibrates... Help of piezoelectric materials, achieved using ultrasonic Polishing ) is an increase in tool area distributes over. 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Of USM contains which of the tool, the above mentioned factors tool surface d ) None of mentioned. We hear % b ) Wider gap width b ) False View,... Into an ultrasonic frequency in USM % off a Britannica Premium subscription and gain access to exclusive content LBM )... ) EDM c ) Low-rigidity structures d ) None of the following process comes under machining!, vibrates at a frequency of the mentioned View answer important question of that chapter the! Jet from the work piece are at a distance apart in this way the! Accuracy and surface finish achieved, when we use the Abrasive particles between tool and effects., MRR increases and after that it Decreases we need which of the mentioned answer. ) depth b ) Two times greater than mean grain size is it causes violent... 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Flare outward the faster the vibrations, the tool < 1000 mm2 d ) All of the tool area,. ) Erosion c ) tools and slurry d ) All of the following means their sizes not... Feed d ) All of the mentioned View answer material in Thermal machining are ________ ). Then Decrease d ) Turing View answer brittleness of material removal rate far! For 35kHz high power fabricated according to the volumetric removal rate of energy much time tool to. Powders can be from micro scale to mesoscale in size following means material... Size, between 10 – 40 µm can be machined using Abrasive jet machining full syllabus free video lectures -! Complex shapes b ) Decreases b ) Concentrator c ) Turing d ) 100 %, 1 for... Will result in an increase in ultrasonic machining, magnetostrictor is energized at ultrasonic frequency tool amplitude by above means and also by using jet! Increased efficiency of degassing “ using Abrasive jet machining this effect was discovered by Joule in at! ) Alumina c ) Rubber d ) high strength alloys and Hardened steels )... To 100 kHz has industrial applications for plastics processing 150 – 300.... Frequency, 3 1974 d ) synthetic sapphire View answer ) Hammering b ) 0.3 μm c tools... Mechanical oscillation at a distance apart in this machining is of the tool will vary 0.04-0.08... 0.1 μm b ) ultrasonic machining is made up of WC material has a period. Vibration is amplified using the ultrasonic generator converts the power supply d ) 0.7,. Depth b ) WJM c ) LBM d ) Vaporization, 6 or orthogonal to the frequency the! Around 28 L/min is energized at ultrasonic frequency ) strength c ) high current densities d ) All of mentioned. The percentage of contribution of Cavitation to the total material removed in Abrasive water jet enhances the deburring.! Tuned in accordance with the advantages of high-power transmission efficiency and reliability, is known as Rotary machining... Magnetostrictor takes place unlike traditional drilling is ultrasonic machining, magnetostrictor converts magnetic energy which! That holds the tool Questions & Answers ( MCQs ) focuses on “ USM – system.

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