This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “Electrochemical Honning-Introduction”.
1. What is the full form of ECH in the advanced machining processes?
a) Electro chemical honing
b) Electro chemical hammering
c) Electro chlorinated hammering
d) Electro chlorinated honing
View Answer
Explanation: The full form of ECH in the advanced machining processes is Electro chemical honing.
2. Which of the following mechanisms are used in the hybrid machining of ECH?
a) Electro chemical dissolution
b) Mechanical abrasion
c) Electro chemical dissolution & Mechanical abrasion
d) None of the mentioned
View Answer
Explanation: MA and ECD are used in material removal of the hybrid process of ECH.
3. ECH has __________ material removal rates than conventional honing or the internal cylindrical grinding.
a) Lower
b) Higher
c) Same
d) All of the mentioned
View Answer
Explanation: Electro chemical honing has higher material removal rates than conventional honing and the internal cylindrical grinding processes.
4. Majority of the material is removed in which phase of ECH?
a) Electro chemical dissolution
b) Mechanical abrasion
c) Electro chemical dissolution & Mechanical abrasion
d) None of the mentioned
View Answer
Explanation: Majority of the material in Electro chemical honing is removed in electro chemical dissolution phase.
5. Which of the following electrolytes is used for ECH process?
a) Sodium chloride
b) Sodium nitrate
c) Hydrochloric acid
d) Sulphuric acid
View Answer
Explanation: Sodium nitrate (240 g/L) is mostly used than Sodium chloride (120 g/L) and other acid electrolytes in Electro chemical honing.
6. What is the value of electrolytic temperature maintained in ECH?
a) 18 ᵒC
b) 28 ᵒC
c) 38 ᵒC
d) 48 ᵒC
View Answer
Explanation: The value of the temperature of the electrolytic solution that is used in Electro chemical honing process is about 38 ᵒC.
7. What is the value of pressure of the electrolytic solution in ECH process?
a) 1 kPa
b) 10 kPa
c) 100 kPa
d) 1000 kPa
View Answer
Explanation: The value of the pressure of the electrolytic solution maintained in Electro chemical process is about 1000 kPa.
8. What is the flow rate of the electrolytic solution used in ECH process?
a) 85 L/min
b) 95 L/min
c) 105 L/min
d) 115 L/min
View Answer
Explanation: The rate of the electrolytic solution used in Electro chemical honing process is about 95 L/min.
9. What are the voltage values used in the process of ECH?
a) 0.1 to 1 V
b) 1 to 5 V
c) 6 to 30 V
d) 40 to 80 V
View Answer
Explanation: The voltage values used in ECH range from 6 to 30 V.
10. What are the current density values that are used in ECH process?
a) 165 A/cm2
b) 235 A/cm2
c) 385 A/cm2
d) 465 A/cm2
View Answer
Explanation: The current density values that are used in the process of Electro chemical honing are about 465 A/cm2.
Sanfoundry Global Education & Learning Series – Advanced Machining.
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