1. Non-Traditional machining is recommended when we need which of the following features?
Correct : D. all of the mentioned
2. Non-Traditional machining can also be called as
Correct : B. non-contact machining
3. In which of the following industries, Non-traditional machining methods play an important role?
Correct : D. all of the mentioned
4. Different classifications of Non-traditional machining based on source of energy are
Correct : D. all of the mentioned
5. In mechanical machining, material is removed by
Correct : A. erosion
6. Material in thermal machining is removed by which of the following means?
Correct : D. all of the mentioned
7. Which of the following process comes under mechanical machining?
Correct : A. usm
8. Surface defects that may be occurred during thermal machining are
Correct : D. all of the mentioned
9. Sources used in thermal machining are
Correct : D. all of the mentioned
10. Vacuum is the machining medium for
Correct : A. lbm
11. In chemical machining is material removal takes by?
Correct : A. chemical reaction
12. Which of the following is an example of hybrid machining?
Correct : C. ultrasonic assisted electrochemical machining
13. What is the full form of WJM in advanced machining processes?
Correct : B. water jet machining
14. What is the key element of water jet machining for material removal?
Correct : C. water jet
15. What is the velocity of water jet stream in water jet machining?
Correct : D. 900 m/sec
16. Which of the following is not a part of machining system of Water jet machining?
Correct : A. transducer
17. What is the general power rating of the hydraulic pump, used in WJM?
Correct : C. 30 kw
18. Which of the following are the components of intensifier present in water jet machining system?
Correct : D. all of the mentioned
19. On which property of water, will the accumulator in Water jet machining rely on?
Correct : B. compressibility
20. What are the values of typical tube diameters in the machining system in WJM?
Correct : C. 6 to 14 mm
21. What is the expected life of the nozzles used in WJM?
Correct : D. 200 hrs
22. Which of the following does not damage the nozzle used in Water jet machining?
Correct : C. water
23. What are the uses of catcher in machining system of Water jet machining?
Correct : D. all of the mentioned
24. Distance between which components, is the stand-off distance?
Correct : B. nozzle-outlet and work piece-top
25. 10 – 0.30 mm.
Correct : C. 2 – 6 mm
26. 8 – 25 mm.
Correct : C. 0.5 – 200 m/min
27. In WJM, what are the properties of jet fluid that affect the MRR?
Correct : D. all of the mentioned
28. Which of the following property/ies of nozzle does not affect the material removal rate in Water jet machining?
Correct : C. outside temperature
29. In the following materials, Water jet machining can be used on which type of material?
Correct : D. all of the mentioned
30. What are the processes and applications, where Water jet machining can be used?
Correct : D. all of the mentioned
31. What is the tolerance limit range of thin materials in WJM?
Correct : C. ± 25 mm
32. In cutting of rocks using water jet machining, which type of pressure is needed?
Correct : C. high pressure
33. In deburring, which combination removes the material from non-metallic materials?
Correct : A. high pressure and low flow rate
34. Which of the following materials has some drawbacks of cutting WJM?
Correct : C. fibre-reinforced plastics
35. In WJM, surface treatment includes which type of processes?
Correct : D. all of the mentioned
36. In how many directions, can the cutting takes place in Water jet machining?
Correct : C. multi-directional
37. In Water jet machining, cuts can be started at which place of workpiece?
Correct : D. from any point
38. Which of the following is not an advantage of Water jet machining?
Correct : C. relatively low hourly rates
39. In Water jet machining, tool need not require sharpening once the machining is done.
Correct : A. true
40. Which of the following secondary processes are eliminated in Water jet machining?
Correct : D. all of the mentioned
41. How many parts are cut using Water jet machining, on a single blank?
Correct : D. multiple parts
42. Which of the following is the disadvantage of water jet machining?
Correct : C. not suitable for mass production
43. . In advanced machining processes, what is the full form of AJM?
Correct : B. abrasive jet machining
44. In AJM, which of the following materials are used as abrasive grains?
Correct : D. all of the mentioned
45. In Abrasive jet machining, work piece material of removed by which of the following means?
Correct : C. mechanical abrasion
46. Which type of materials can be machined using Abrasive jet machining?
Correct : D. all of the mentioned
47. In machining system of AJM, which is the medium of carrying the abrasive grains for machining?
Correct : B. gases
48. In machining system of AJM, what is/are the gas/es used for carrying the abrasives?
Correct : D. all of the mentioned
49. What is the pressure of gas that is to be supplied, for carrying the abrasives?
Correct : B. 2.0 to 8.0 kg /cm2
50. Which of the following gas, should never be used as the carrier of abrasives?
Correct : C. oxygen
51. What is the frequency of mixing chamber, consisting of gas and abrasives?
Correct : C. 50 hz
52. What are the processes where Abrasive jet machining can be used?
Correct : D. all of the mentioned
53. In machining system of AJM, which of the following controls the relative motion between work piece and nozzle?
Correct : D. all of the mentioned
54. Masks, which are used to confine the jet stream location on work piece are made of, which type of materials?
Correct : D. all of the mentioned
55. In AJM, what is the mechanism of removal of material from the work piece?
Correct : B. abrasion
56. In AJM, abrasive jet from the nozzle follows, which type of path for a short distance?
Correct : A. parallel
57. Which of the following components, influence the material removal rate in Abrasive jet machining?
Correct : D. all of the mentioned
58. In the following properties of nozzle, which of them does not influence the MRR?
Correct : C. outside temperature
59. In the following properties of abrasive grains, which of them changes rate of material removal?
Correct : D. all of the mentioned
60. As the abrasive flow rate increases, what happens to the volumetric removal rate?
Correct : C. increase and then decrease
61. What is the value of abrasive grain flow rate in Abrasive jet machining?
Correct : B. 3 – 20 g/min
62. What is the value of carrier gas flow rate in Abrasive jet machining?
Correct : C. 28 l/min
63. Which of the following material/s cannot be used for making of nozzle in Abrasive jet machining?
Correct : B. steel alloy
64. What is the life of Tungsten carbide material nozzle?
Correct : C. 10 – 15 hrs
65. In AJM, what is the life of synthetic sapphire material nozzle?
Correct : B. 300 hrs
66. 05 mm.
Correct : B. 0.15 – 1.5 µm
67. Which of the following, are the processes and applications in which Abrasive jet machining can be applied?
Correct : D. all of the mentioned
68. Using abrasive jet machining, wire cleaning and insulation stripping take place without affecting the conductor.
Correct : A. true
69. In Abrasive jet machining, intricate shapes and holes are machined on which type of materials?
Correct : D. all of the mentioned
70. 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.”
Correct : A. true
71. What are the type of materials that can be machined using Abrasive jet machining?
Correct : D. all of the mentioned
72. What is the amount of material utilizes when we machine parts using Abrasive jet machining?
Correct : D. high
73. After how much time tool has to be changed in AJM?
Correct : D. no tool change required
74. By using Abrasive jet machining, how much amount of hardening does the materials experience?
Correct : A. no hardening
75. Which type of materials cannot be machined using Abrasive jet machining?
Correct : A. soft materials
76. Which of the following materials in Abrasive jet machining can be a health hazard?
Correct : C. silica dust
77. In AJM, air filters are used to remove which of the following?
Correct : D. all of the mentioned
78. In advanced machining processes, what is the full form of AWJM?
Correct : C. abrasive water jet machining
79. What are all the types of materials, which can be machined using AWJM?
Correct : D. all of the mentioned
80. When compared to the conventional machining, how much times faster, is the Abrasive water jet machining?
Correct : B. 10 times
81. What is the percentage of the abrasives and water in the mixture?
Correct : D. 70% water and 30% abrasives
82. What are the materials used for abrasives in Abrasive water jet machining?
Correct : D. all of the mentioned
83. In the machining system of AWJM, which one accelerates the abrasives to remove material?
Correct : B. water jet stream
84. The introduction of compressed air to the water jet enhances the deburring action.
Correct : A. true
85. What is the grain size of abrasive particles, which are often used for Abrasive water jet machining?
Correct : B. 10 – 150 µm
86. How is the material removed in Abrasive water jet machining?
Correct : D. erosion
87. Which of the following is not the feed mechanism of the abrasives in AWJM?
Correct : B. cross feed
88. In Abrasive water jet machining, how are the abrasives fed into the water jet stream?
Correct : C. all of the mentioned
89. What is the use of delivery system in the machining system of AWJM?
Correct : B. to pump water
90. Of the following components, which one does not come under the machining system of AWJM?
Correct : B. transducer
91. In Abrasive water jet machining, intensifier is used to deliver which type of pressure?
Correct : D. high pressure
92. In mixing chamber of AWJM, which of the following are mixed?
Correct : B. abrasives and water jet
93. Of the following, which one is a type of suspension in AWJM?
Correct : D. all of the mentioned
94. In machining system of AWJM, mixing chamber is immediately followed by which of the following component?
Correct : A. focusing tube
95. Which of the following energies are absorbed using the catchers in Abrasive water jet machining?
Correct : C. residual energy
96. Which of the following are different types of catchers used in AWJM?
Correct : D. all of the mentioned
97. Which of the following is not a process parameter of Abrasive water jet machining?
Correct : A. frequency of vibration
98. Which of the following come under the process parameters of the Abrasive water jet machining?
Correct : D. all of the mentioned
99. 10 – 0.30 mm.
Correct : C. 2500 – 4000 bar
100. Surface roughness depends on which of the following parameters in Abrasive water jet machining?