MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Manufacturing Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is true about ECG? |
| A. | Lower MRRs when grinding hard, heat sensitive materials |
| B. | Machining of soft metals like aluminium can be easily done |
| C. | Difficult to machine materials with high hardness like tungsten carbide |
| D. | Burr-free sharpening of needles |
| Answer» E. | |
| 2. |
Feed rates in ECG vary with a grinding method. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
FEED_RATES_IN_ECG_VARY_WITH_A_GRINDING_METHOD.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Which_of_the_following_is_true_about_ECG?$ |
| A. | Lower MRRs when grinding hard, heat sensitive materials |
| B. | Machining of soft metals like aluminium can be easily done |
| C. | Difficult to machine materials with high hardness like tungsten carbide |
| D. | Burr-free sharpening of needles |
| Answer» E. | |
| 5. |
Which of the following is true for ECG? |
| A. | Higher the grinding wheel rpm, higher is the MRR |
| B. | Higher the current density, faster the removal rate |
| C. | Stronger the electrolyte, poor surface finish |
| D. | Higher the hardness of the workpiece, lower the current density required |
| Answer» C. Stronger the electrolyte, poor surface finish | |
| 6. |
Electrolyte in ECG should provide _____________ |
| A. | lower chemical activity |
| B. | allowance to stray currents |
| C. | high stock removal efficiency |
| D. | higher corrosion tendency |
| Answer» D. higher corrosion tendency | |
| 7. |
In ECG, rate of formation of oxide film is faster than that in ECM. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Nozzles are used to _____________ |
| A. | spray coolant on the wheel |
| B. | ensure proper wetting of the wheel |
| C. | spray chemical directly on the work piece |
| D. | nozzles are not used in ECG |
| Answer» C. spray chemical directly on the work piece | |
| 9. |
As compared to electrochemical machining (ECM), ECG consumes less power. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
In ECG, grinding action removes ____________ |
| A. | workpiece material from the surface |
| B. | corroded surface layer making workpiece ready for electro-chemical process |
| C. | oxide film formed on the surface |
| D. | particles removed from surface after chemical action |
| Answer» D. particles removed from surface after chemical action | |
| 11. |
ECG is suitable for which of the following materials? |
| A. | Tungsten carbide |
| B. | Polymers |
| C. | Iron |
| D. | Nickel |
| Answer» B. Polymers | |
| 12. |
In electro-chemical grinding, grinding wheel is used as a cathode. |
| A. | True |
| B. | False |
| Answer» B. False | |