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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which of the following materials can be easily separated by laser scribing?(a) Silicon(b) Glass(c) Ceramic(d) All of the mentionedThe question was posed to me by my school principal while I was bunking the class.I'd like to ask this question from LBM-Applications in chapter Thermal Processes of Advanced Machining |
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Answer» Correct ANSWER is (d) All of the mentioned |
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| 52. |
Peak power should be increased in Laser drilling process by __________ pulse energy.(a) Increasing(b) Decreasing(c) Reducing(d) ConstantI have been asked this question in final exam.This is a very interesting question from LBM-Applications in chapter Thermal Processes of Advanced Machining |
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Answer» Correct option is (a) Increasing |
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| 53. |
What is the full form of LBM in advanced machining processes?(a) Laser Beam Manufacturing(b) Laser Beam Machining(c) Light Blast Manufacturing(d) Light Beam MachiningThis question was addressed to me in an interview for job.My question comes from Laser Beam Machining-Introduction topic in division Thermal Processes of Advanced Machining |
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Answer» The correct ANSWER is (b) Laser Beam Machining |
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| 54. |
What is the wavelength value of CO2 laser used in Laser beam machining?(a) 0.16 μm(b) 1.6 μm(c) 10.6 μm(d) 106 μmThe question was asked by my college professor while I was bunking the class.This interesting question is from Laser Beam Machining-Introduction topic in section Thermal Processes of Advanced Machining |
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Answer» CORRECT OPTION is (c) 10.6 μm The explanation: The value of WAVE LENGTH of CO2 laser used in Laser BEAM machining is 10.6 μm. |
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| 55. |
Which of the following lasers is used for ceramic materials in LBM?(a) Pulsed CO2(b) Nd-YAG(c) Pulsed CO2 & Nd-YAG(d) None of the mentionedThis question was posed to me in homework.This question is from LBM-Applications topic in division Thermal Processes of Advanced Machining |
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Answer» Correct option is (c) PULSED CO2 & Nd-YAG |
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| 56. |
What are the feed rates used in WEDG process?(a) 1 to 5 mm/min(b) 5 to 10 mm/min(c) 10 to 15 mm/min(d) 15 to 20 mm/minThe question was asked by my school teacher while I was bunking the class.Query is from EDM-Applications topic in section Thermal Processes of Advanced Machining |
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Answer» RIGHT OPTION is (b) 5 to 10 mm/min Explanation: FEED rate values in WEDG process RANGE from 5 to 10 mm/min. |
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| 57. |
What are the tolerance values obtained by machining using EDM?(a) ± 10 mm(b) ± 15 mm(c) ± 25 mm(d) ± 40 mmThe question was asked during an interview for a job.This key question is from EDM-Surface Integrity in section Thermal Processes of Advanced Machining |
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Answer» RIGHT answer is (C) ± 25 MM The best explanation: The tolerance VALUES of ± 25 mm are obtained when we machine components USING EDM. |
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| 58. |
The term no wear in EDM occurs when electro-to-work piece wear ratio is __________(a) |
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Answer» The correct option is (a) <1% |
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| 59. |
What happens to the crater size if we increase the current keeping the pulse time constant?(a) Increase(b) Decrease(c) Decrease and increase(d) None of the mentionedI had been asked this question by my school teacher while I was bunking the class.I would like to ask this question from EDM-Material Removal Rate in chapter Thermal Processes of Advanced Machining |
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Answer» Correct ANSWER is (a) Increase |
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| 60. |
In addition to the feed of tool, Electro discharge machining tool can have which type of motion?(a) Oscillatory(b) Rotary(c) Vibrational(d) All of the mentionedThe question was asked at a job interview.My question is based upon EDM-Machining System topic in portion Thermal Processes of Advanced Machining |
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Answer» The CORRECT OPTION is (b) Rotary |
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| 61. |
Which of the following parameters determines the size of cavities?(a) Size of electrode(b) Radius of orbit(c) All of the mentioned(d) None of the mentionedThe question was asked in a national level competition.My question is based upon EDM-Machining System in division Thermal Processes of Advanced Machining |
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Answer» The correct choice is (c) All of the mentioned |
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| 62. |
What is the duration of sparks that are produced in Electro discharge machining?(a) 0.001 – 1 µs(b) 0.1 – 2000 µs(c) 0.2 – 100 ms(d) 100 – 2000 msThis question was posed to me in an interview.This interesting question is from EDM-Mechanism of Material Removal topic in section Thermal Processes of Advanced Machining |
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Answer» Correct answer is (b) 0.1 – 2000 µs |
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| 63. |
State whether the following statement is true or false regarding the applications of IBM.(a) “In IBM, thickness can be reduced which affects the surface finish.”(b) True(c) FalseI got this question by my college professor while I was bunking the class.The doubt is from IBM-Surface effects and Applications topic in portion Thermal Processes of Advanced Machining |
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Answer» RIGHT answer is (b) True Easy explanation: Reduction of thickness of THIN FILMS can be DONE without AFFECTING the surface finish. |
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| 64. |
What is the thickness of the HAZ in PBM?(a) 0.001 to 0.23 mm(b) 0.25 to 1.12 mm(c) 1.3 to 2.56 mm(d) 2.73 to 5.26 mmI have been asked this question by my school teacher while I was bunking the class.I'd like to ask this question from PBM topic in division Thermal Processes of Advanced Machining |
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Answer» The correct choice is (B) 0.25 to 1.12 mm |
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| 65. |
What is the value of machining speed used in PBM process?(a) 0.1 – 7.5 m/min(b) 8.5 – 10.5 m/min(c) 15.5 – 19.5 m/min(d) 20.5 – 25.5 m/minThis question was posed to me in an internship interview.My question comes from Plasma Beam Machining-Introduction And Machining system topic in portion Thermal Processes of Advanced Machining |
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Answer» CORRECT OPTION is (a) 0.1 – 7.5 m/min The best I can EXPLAIN: The value of machining speed is about 0.1 – 7.5 m/min in Plasma beam machining process. |
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| 66. |
When the Plasma Beam machining process came into the industrial world?(a) 1920s(b) 1930s(c) 1950s(d) 1970sThe question was asked in unit test.My enquiry is from Plasma Beam Machining-Introduction And Machining system topic in section Thermal Processes of Advanced Machining |
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Answer» The correct choice is (c) 1950s |
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| 67. |
How much is the capital equipment cost of equipment used in EBM?(a) Very low cost(b) Low cost(c) Moderate cost(d) High costThis question was posed to me during an online exam.The question is from EBM-Applications, Advantages and Disadvantages in chapter Thermal Processes of Advanced Machining |
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Answer» The correct choice is (d) High cost |
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| 68. |
What is the value of frequency used in EBM?(a) 0.001 – 0.016 Hz(b) 0.01 – 16 Hz(c) 0.1 – 16000 Hz(d) 10 – 1600 kHzI got this question during an online exam.This question is from EBM-Applications, Advantages and Disadvantages topic in chapter Thermal Processes of Advanced Machining |
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Answer» Correct answer is (C) 0.1 – 16000 Hz |
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| 69. |
The tungsten filament cathode is heated to what temperatures in EBM?(a) 1000 to 1500 ᵒC(b) 1500 to 2000 ᵒC(c) 2500 to 3000 ᵒC(d) 3500 to 5000 ᵒCI have been asked this question in an online interview.My question is from Electronbeam Machining-Introduction, Equipment and Material removal in chapter Thermal Processes of Advanced Machining |
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Answer» CORRECT ANSWER is (c) 2500 to 3000 ᵒC Explanation: The TUNGSTEN FILAMENT cathode is heated to 2500 to 3000 ᵒC in Electron beam machining. |
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| 70. |
What are the values of diameters obtained by using Laser drilling process?(a) 0.0001 – 0.001 mm(b) 0.001 – 0.01 mm(c) 0.005 – 1.25 mm(d) 1.5 – 10.5 mmThis question was addressed to me during a job interview.My question comes from LBM-Applications in section Thermal Processes of Advanced Machining |
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Answer» CORRECT option is (c) 0.005 – 1.25 MM For EXPLANATION I would say: VALUES of diameters obtained by using Laser drilling PROCESS range between 0.005 – 1.27 mm. |
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| 71. |
Which path of the components in wire EDM determines the path to be machined?(a) Horizontal worktable movement(b) Vertical worktable movement(c) Horizontal & Vertical worktable movement(d) None of the mentionedThe question was asked in a national level competition.This interesting question is from EDM-Applications topic in portion Thermal Processes of Advanced Machining |
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Answer» The CORRECT choice is (a) Horizontal worktable movement |
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| 72. |
Which method mentioned below is used for drilling of large size holes?(a) Direct drilling(b) Drill and ream(c) Trepanning(d) All of the mentionedThe question was posed to me in unit test.This intriguing question originated from LBM-Applications in section Thermal Processes of Advanced Machining |
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Answer» Correct CHOICE is (C) Trepanning |
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| 73. |
Which of the following lasers is used for slitting of thin plastic materials in LBM?(a) CO2 + gas assisted(b) CO2 only(c) Nd-YAG(d) RubyThe question was posed to me in a job interview.This interesting question is from LBM-Applications in section Thermal Processes of Advanced Machining |
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Answer» RIGHT OPTION is (b) CO2 only The explanation: CO2 laser is used for SLITTING of thin plastic MATERIALS in Laser beam machining process. |
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| 74. |
What is the value the maximum optimum depth that can be machined using Laser drilling process?(a) 0.17 mm(b) 1.7 mm(c) 17.1 mm(d) 171.7 mmThis question was posed to me in a job interview.The query is from LBM-Applications topic in division Thermal Processes of Advanced Machining |
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Answer» Correct answer is (B) 1.7 mm |
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| 75. |
The maximum depth of damaged layer is how many times that of average surface roughness?(a) 1.5 time(b) 2 times(c) 2.5 times(d) 3 timesI had been asked this question by my college director while I was bunking the class.The query is from EDM-Surface Integrity topic in section Thermal Processes of Advanced Machining |
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Answer» RIGHT option is (C) 2.5 TIMES The explanation is: Depth of damaged layer is two and half times the average surface roughness VALUE. |
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| 76. |
On which of the following factors do the craters depend?(a) Physical properties(b) Mechanical properties(c) Composition of medium(d) All of the mentionedThe question was posed to me during an interview for a job.My query is from EDM-Surface Integrity in section Thermal Processes of Advanced Machining |
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Answer» The CORRECT OPTION is (d) All of the mentioned |
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| 77. |
Using of a mate electrode in Electro discharge machining _____________ the surface roughness of material.(a) Increases(b) Decreases(c) Enhances(d) None of the mentionedI got this question by my school principal while I was bunking the class.Query is from EDM-Surface Integrity topic in division Thermal Processes of Advanced Machining |
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Answer» The CORRECT choice is (B) Decreases |
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| 78. |
By how much percent surface roughness is reduced if we use proper dielectric flow?(a) 25%(b) 50%(c) 75%(d) 100%I had been asked this question in a national level competition.Enquiry is from EDM-Surface Integrity topic in division Thermal Processes of Advanced Machining |
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Answer» The correct choice is (B) 50% |
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| 79. |
In EDM, inadequate flushing will not result in which of the following consequences?(a) Arcing(b) Debris removal(c) Decrease electrode life(d) Increased production timeI got this question during an interview.Origin of the question is EDM-Machining System in portion Thermal Processes of Advanced Machining |
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Answer» Correct answer is (b) Debris REMOVAL |
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| 80. |
What is the use of power supply system in Electro discharge machining?(a) Constant gap(b) Supply power(c) Dielectric fluid supply(d) Work piece holdingI have been asked this question in an online interview.Asked question is from EDM-Machining System topic in section Thermal Processes of Advanced Machining |
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Answer» Correct option is (b) SUPPLY power |
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| 81. |
Metal is removed on which of the components in electro discharge machining?(a) Electrode tool(b) Work piece(c) Electrode tool & Work piece(d) None of the mentionedThis question was addressed to me in an online interview.This key question is from EDM-Material Removal Rate in division Thermal Processes of Advanced Machining |
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Answer» Correct choice is (c) Electrode tool & Work PIECE |
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| 82. |
Open gap voltages contribute to how much amount of material removal?(a) 20 %(b) 50 %(c) 70 %(d) No contributionThe question was posed to me in homework.My question is based upon EDM-Mechanism of Material Removal in section Thermal Processes of Advanced Machining |
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Answer» The correct option is (d) No contribution |
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| 83. |
What are the values of gaps between the electrodes in EDM?(a) 0.001 – 0.05 mm(b) 0.01 – 0.5 mm(c) 0.1 – 5 mm(d) 1 – 15 mmThis question was addressed to me in an interview for internship.My doubt is from EDM-Mechanism of Material Removal topic in section Thermal Processes of Advanced Machining |
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Answer» CORRECT choice is (b) 0.01 – 0.5 mm Easiest explanation: In EDM, very small GAPS that RANGE between 0.01 – 0.5 mm are maintained. |
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| 84. |
What are the magnitude of voltages used in Electro discharge machining?(a) 1 to 20 V(b) 20 to 120 V(c) 120 to 220 V(d) 220 to 320 VThis question was posed to me during an internship interview.My doubt is from EDM-Mechanism of Material Removal topic in portion Thermal Processes of Advanced Machining |
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Answer» Right choice is (b) 20 to 120 V |
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| 85. |
State whether the following statement is true or false regarding IBM.(a) “In IBM, vacuum chamber is not necessary unlike that of Electron beam machining.”(b) True(c) FalseThe question was posed to me by my college director while I was bunking the class.My question is from Ion Beam Machining-Introduction, Material Removal Rate in portion Thermal Processes of Advanced Machining |
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Answer» Right CHOICE is (B) True |
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| 86. |
Which of the following are the advantages of PBM?(a) No chemical(b) Less harmful(c) Operates cleanly(d) All of the mentionedThe question was asked during an online interview.This question is from PBM topic in portion Thermal Processes of Advanced Machining |
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Answer» Right option is (d) All of the mentioned |
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| 87. |
What is the tolerance value obtained in EBM?(a) ± 10 %(b) ± 20 %(c) ± 30 %(d) ± 40 %I have been asked this question during an online interview.Query is from EBM-Applications, Advantages and Disadvantages in chapter Thermal Processes of Advanced Machining |
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Answer» The correct option is (a) ± 10 % |
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| 88. |
How many holes can be produced in perforation of thin sheets using EBM?(a) 10^1 to 10^2(b) 10^2 to 10^3(c) 10^3 to 10^4(d) 10^4 to 10^5This question was addressed to me during a job interview.My doubt is from EBM-Applications, Advantages and Disadvantages in portion Thermal Processes of Advanced Machining |
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Answer» Correct option is (d) 10^4 to 10^5 |
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| 89. |
Which type of holes can be drilled using Nd-YAG laser?(a) Small holes(b) Large holes(c) Small & Large holes(d) None of the mentionedThis question was addressed to me during an online interview.I want to ask this question from LBM-Applications in portion Thermal Processes of Advanced Machining |
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Answer» The correct OPTION is (c) SMALL & Large holes |
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| 90. |
Which of the following are the applications of EBM process?(a) Drilling(b) Cutting(c) Engraving(d) All of the mentionedThe question was posed to me in class test.This key question is from Electronbeam Machining-Introduction, Equipment and Material removal topic in section Thermal Processes of Advanced Machining |
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Answer» CORRECT answer is (d) All of the mentioned The explanation: DRILLING small HOLES, CUTTING, engraving, and heat treatment are some of modern applications of ELECTRON beam machining. |
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| 91. |
What are the values of thickness used is fine cutting process?(a) 0.01 to 0.05 mm(b) 0.05 to 0.1 mm(c) 0.5 to 15 mm(d) 15 to 50 mmI had been asked this question in an interview.My doubt is from LBM-Applications in division Thermal Processes of Advanced Machining |
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Answer» Right answer is (C) 0.5 to 15 mm |
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| 92. |
Drilling of holes with larger pulse duration causes which effect to the holes produced?(a) Enlarge holes(b) Reduce hole size(c) Decrease the depth(d) All of the mentionedThe question was posed to me in semester exam.The query is from LBM-Applications topic in portion Thermal Processes of Advanced Machining |
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Answer» Right choice is (a) ENLARGE holes |
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| 93. |
Which of the following are correlated with the machining conditions at output stage?(a) Machining depth(b) Surface roughness(c) Accuracy(d) All of the mentionedI got this question by my college professor while I was bunking the class.Origin of the question is EDM-Process Control, Automation, Environmental Impact in portion Thermal Processes of Advanced Machining |
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Answer» CORRECT option is (d) All of the mentioned The explanation: Machining DEPTH, SURFACE roughness, accuracy are correlated with the machining CONDITIONS at the output stage. |
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| 94. |
State whether the following statement is true or false regarding the drilling using LBM.(a) “Compared to LBM, conventional machining is more accurate and efficient.”(b) True(c) FalseThis question was posed to me at a job interview.My query is from LBM-Applications in portion Thermal Processes of Advanced Machining |
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Answer» RIGHT OPTION is (b) True To explain: Conventional MACHINING is less sufficient than Laser BEAM machining because of their material toughness. |
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| 95. |
Which of the following are different laser drilling processes in Laser beam machining?(a) Direct drilling(b) Drill and ream(c) Trepanning(d) All of the mentionedThe question was posed to me in examination.The doubt is from LBM-Applications topic in portion Thermal Processes of Advanced Machining |
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Answer» Correct CHOICE is (d) All of the mentioned |
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| 96. |
In a simple application which of the following parameters are outputs?(a) Pulse duration and current(b) Normal and abnormal pulses(c) All of the mentioned(d) None of the mentionedThe question was posed to me in a national level competition.My question is taken from EDM-Process Control, Automation, Environmental Impact topic in section Thermal Processes of Advanced Machining |
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Answer» Right choice is (a) Pulse duration and current |
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| 97. |
What is the value of depth to diameter ratio in Micro-Electro discharge machining process?(a) 10:1(b) 5:2(c) 4:3(d) 2:1The question was asked in an interview for internship.Question is taken from EDM-Applications in portion Thermal Processes of Advanced Machining |
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Answer» The correct choice is (a) 10:1 |
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| 98. |
What are duration values of current amplitude in EDT?(a) 0.1 to 1 µs(b) 1 to 10 µs(c) 10 to 100 µs(d) 100 to 1000 µsThis question was addressed to me in an online quiz.My query is from EDM-Applications in division Thermal Processes of Advanced Machining |
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Answer» Right CHOICE is (c) 10 to 100 µs |
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| 99. |
What are the values of finish obtained by machining work piece thorough Electro discharge sawing?(a) 0.1 to 4 µm(b) 6.3 to 10 µm(c) 12.4 to 23 µm(d) 25.6 to 40 µmThe question was posed to me in an online quiz.This key question is from EDM-Applications topic in section Thermal Processes of Advanced Machining |
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Answer» RIGHT choice is (B) 6.3 to 10 µm Best explanation: The finish obtained ranges from 6.3 to 10 µm when machined USING ELECTRO discharge sawing. |
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| 100. |
How much amount of burr is produce while machined using Electro discharge sawing?(a) 10%(b) 20%(c) 50%(d) No BurrI have been asked this question in an interview for internship.Origin of the question is EDM-Applications topic in chapter Thermal Processes of Advanced Machining |
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Answer» The correct CHOICE is (d) No Burr |
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