Advanced Machining Questions and Answers – ECG-Accuracy, Applications, Advant…

This set of Advanced Machining Processes Multiple Choice Questions(MCQs) focuses on “ECG-Accuracy, Applications, Advantages and disadvantages”.

1. What are the tolerance value that are obtained by using ECG process?
a) ± 0.01 mm
b) ± 0.03 mm
c) ± 0.05 mm
d) ± 0.07 mm
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2. Under special circumstances what are the tolerances obtained?
a) ± 0.02 mm
b) ± 0.04 mm
c) ± 0.06 mm
d) ± 0.08 mm
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3. What are the production tolerances obtained in ECG process?
a) ± 0.005 mm
b) ± 0.015 mm
c) ± 0.025 mm
d) ± 0.035 mm
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4. The tolerance values in ECG depend on which of the following factors?
a) Electrolyte flow
b) Feed rate
c) Metallurgy of material
d) All of the mentioned
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5. What are the values of accuracies obtained in ECG process?
a) ± 0.025 mm
b) ± 0.125 mm
c) ± 0.225 mm
d) ± 0.325 mm
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6. Which type of voltages are recommended for closer tolerances in ECG?
a) Low
b) Moderate
c) High
d) Very high
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7. What are the values of radii of corners obtained in ECG?
a) 0.15 to 0.225 mm
b) 0.25 to 0.375 mm
c) 0.45 to 0.525 mm
d) 0.55 to 0.675 mm
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8. Surface finish in ECG depend on which of the following factors?
a) Metal machined
b) Abrasive size
c) Wheel speed
d) All of the mentioned
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9. What are the values of radii of corners obtained in ECG?
a) 0.1 to 0.2 µm
b) 0.2 to 0.3 µm
c) 0.3 to 0.4 µm
d) 0.4 to 0.5 µm
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10. What are the values of voltages used for better surface quality?
a) 1 – 2 V
b) 2 – 3 V
c) 3 – 5 V
d) 5 – 8 V
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11. What are the machining speeds recommended for high surface quality?
a) 1 – 250 mm/min
b) 250 – 500 mm/min
c) 500 – 750 mm/min
d) 750 – 100 mm/min
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12. What are the applications of Electro chemical grinding process?
a) Milling the material
b) Tool and cutter sharpening
c) Cutting off
d) All of the mentioned
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13. What are the advantages of machining in Electro chemical grinding?
a) Good surface quality
b) Absence of distortion
c) Longer wheel life
d) All of the mentioned
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14. Which of the following are the disadvantages of ECG process?
a) High capital cost
b) Limited to conductive materials
c) Corrosive nature
d) All of the mentioned
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15. State whether the following statement is true of false regarding ECG process.
“In ECG process, filtering and disposal of electrolyte is not necessary.”
a) True
b) False
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Sanfoundry Global Education & Learning Series – Advanced Machining.

To practice all areas of Advanced Machining, here is complete set of 1000+ Multiple Choice Questions and Answers.