Answer: d The ultrasonic machine is built on a five-axis machining center platform. b) 0.08 – 0.13 μm b) False, 7. b) 10-15 kHz View Answer. Explanation: Mixing chamber consisting of carrier gas and the abrasive grains, vibrates at a frequency of 50 Hz. c) Size d) None of the mentioned Answer: b c) ± 0.05 mm In the following USM accuracy levels are limited to which value? View Answer. b) Decreased The machinability of USM depends on brittleness criterion. Rotary ultrasonic machining (RUM) has been used to machine both brittle and ductile materials as well as composite materials. ultra sonic machining 9. Process: Ultrasonic machining is a mechanical type non-traditional machining process. d) PAM, 8. Conicity resulting after machining by Ultrasonic Machining can be reduced by? d) Form error of tool, 2. c) Corrosion Explanation: In AJM, Diameter of the nozzle ranges between 0.30 – 0.50 mm. 6. a) Automobile c) 5 to 7 mm When machining porous material, which type of mechanism is introduces? a) Increases What is value of surface finish achieved, when we use the abrasive of grit number 240? c) 30% water and 70% abrasives View Answer. Answer: c a) Mechanical No. View Answer. Another function used for the first time worldwide is the monitoring and tracking as well as of frequency and amplitude during the ongoing machining process. b) Decreases b) Ceramics c) 40 – 140 μm View Answer. Explanation: In AJM, volumetric removal rate increases up to a level and then decreases. d) All of the mentioned To be continued coming soon............................. SSC-JE & RRB-JE(Mechanical) Full syllabus free video lectures:-. d) Corrosion, 4. c) Rubber d) None of the mentioned “In Abrasive jet machining, commercial grades powders can be used for machining.” View Answer, Answer: d View Answer. d) All of the mentioned What is the value of carrier gas flow rate in Abrasive jet machining? As silicon is a typical brittle material, ultrasonic vibration cutting (UVC) is a promising method to achieve better cutting performance than conventional techniques. Explanation: Both machinability and MRR depends on brittleness of material. b) Static Pressure 6. View Answer. Explanation: Without affecting the conductor, both stripping and cleaning are done, by using Abrasive jet machining. Typical roundness error in glass, resulted due to lateral vibrations is between? d) ± 0.50 mm Explanation: In Abrasive jet machining, tolerance limit values range between ± 0.05 mm. c) 25 – 30 % d) Steve John a) Automatic Jet Manufacturing a) Only rotation 16 kHz to 1 GHz. View Answer. b) 20 – 60 μm 6. In advanced machining processes, what is the full form of AWJM? a) 5-10 kHz Explanation: Different features of tool also affect the material removal in USM. 7. d) 100-1000 μm, 7. Answer: b At what rate slurry is pumped through nozzle in USM? a) True c) Low-rigidity structures View Answer. The magnetic field is tuned in accordance with the natural frequency of the magnetostrictor, allowing its resonance. c) Microchipping d) 1.10 – 1.50 mm, 12. In Abrasive jet machining, what may be the size of the abrasive grains used? The transducer converts the ultrasonic frequency oscillation into an ultrasonic mechanical vibration. 7. View Answer. Explanation: Up to a certain limit of vibration frequency, MRR increases and after that it decreases. c) High static pressure b) 1958 b) Automated Water Jet Manufacturing b) Corundum a) Vaporization 7. Advance Machining Process important Mcq questions for RGPV Online Exams 2020, https://www.youtube.com/watch?v=2k1r9mG_Sxk&list=PLelAq9xzEDXD-DOAp0fyDVoaFoRXDpk3m, Theory Questions of Chapter 3,4 & 5 Advance machining Process || RGPV online exams 2020, MCQ Questions for Advance machining process || RGPV online exam 2020, Set-1 ( Introduction Advance machining Designing ), 1. a) Drilling 10. View Answer. Vacuum is the machining medium for ________ b) Pantographs a) 0.1-10 μm In AJM, what is the mechanism of removal of material from the work piece? Areas of advanced materials welding layer upon layer in this way, the tool AWJM is Abrasive jet.. Flow d ) None of the mentioned, 7 ) Electrolyte jet b ) 25 L/min c ) normal parts! Gas that carries the Abrasive slurry grains d ) synthetic sapphire material nozzle is fed into the zone! A CONVERTER which contains piezoelectric crystals which change the incoming high frequency vibration transfer Abrasive! 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