MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Advanced Machining knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Between which values does the side gap’s surface roughness vary? |
| A. | >1 µm |
| B. | >3 µm |
| C. | >5 µm |
| D. | >7 µm |
| Answer» D. >7 µm | |
| 2. |
Between which values does the frontal gap’s surface roughness vary? |
| A. | 0.02 to 0.13 µm |
| B. | 0.30 to 1.90 µm |
| C. | 1.93 to 2.64 µm |
| D. | 2.73 to 4.26 µm |
| Answer» C. 1.93 to 2.64 µm | |
| 3. |
What is the value of moderate level of pH of electrolyte used? |
| A. | 1 – 2 |
| B. | 2 – 4 |
| C. | 4 – 10 |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 4. |
In practice, what must be the temperature of electrolyte used in ECM? |
| A. | 10 – 20oC |
| B. | 20 – 40oC |
| C. | 60 – 80oC |
| D. | 80 – 100oC |
| Answer» D. 80 – 100oC | |
| 5. |
State whether the following statement is true or false about electrolyte in ECM.“Machinability in ECM is enhanced, when electrolyte is heated.” |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Nickel can be machined with 100% current efficiency, when current density value is ______________ |
| A. | 10 A/cm2 |
| B. | 25 A/cm2 |
| C. | 45 A/cm2 |
| D. | 80 A/cm2 |
| Answer» C. 45 A/cm2 | |