Question 31 : What are the current density values that are used in ECH process?
1. 165 A/cm²
2. 235 A/cm²
3. 385 A/cm²
4. 465 A/cm²
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Question 32 : What are the voltage values used in the process of ECH?
1. 0.1 to 1 V
2. 1 to 5 V
3. 6 to 30 V
4. 40 to 80 V
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Question 33 : What is the flow rate of the electrolytic solution used in ECH process?
1. 85 L/min
2. 95 L/min
3. 105 L/min
4. 115 L/min
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Question 34 : What is the value of pressure of the electrolytic solution in ECH process?
1. 1 kPa
2. 10 kPa
3. 100 kPa
4. 1000 kPa
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Question 35 : What is the value of electrolytic temperature maintained in ECH?
1. 18 ?C
2. 28 ?C
3. 38 ?C
4. 48 ?C
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Question 36 : Which of the following electrolytes is used for ECH process?
1. Sodium chloride
2. Sodium nitrate
3. Hydrochloric acid
4. Sulphuric acid
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Question 37 : Majority of the material is removed in which phase of ECH?
1. Electro chemical dissolution
2. Mechanical abrasion
3. All of the mentioned
4. None of the mentioned
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Question 38 : ECH has _____ material removal rates than conventional honing or the internal cylindrical grinding.
1. Lower
2. Higher
3. Same
4. All of the mentioned
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Question 39 : Which of the following mechanisms are used in the hybrid machining of ECH?
1. Electro chemical dissolution
2. Mechanical abrasion
3. All of the mentioned
4. None of the mentioned
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Question 40 : What is the full form of ECH in the advanced machining processes?
1. Electro chemical honing
2. Electro chemical hammering
3. Electro chlorinated hammering
4. Electro chlorinated honing
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