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Manufacturing Engineering Practice Test: Electro-Chemical Grinding Machining
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Avg score: 89% Most missed: “What is faraday’s first law of electrolysis?”
Electrochemical grinding (ECG) is a machining process that combines electrochemical machining (ECM) and conventional grinding. It's also known as electrolytic grinding or enotic machining. ECG is a non-traditional machining process that uses a negatively charged abrasive grinding wheel, an electrolyte fluid, and a positively charged workpiece to remove electrically conductive material. The workpiece becomes an anode and the grinding wheel becomes a cathode. The process removes material from the workpiece both electrochemically and mechanically. ECG combines electrolytic action (90%) and... Show more
Manufacturing Engineering Practice Test: Electro-Chemical Grinding Machining
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25 Questions

1. In ECM, one needs to understand fluid flow while designing the tool for machining complex shapes.
2. In ECG, rate of formation of oxide film is faster than that in ECM.
3. Which of the following manufacturing process is favourable for making tool for ECM?
4. Spraying or dipping method is used for applying insulation.
5. ECM process is based on which of the following laws?
6. In order to obtain good results in ECM, _____
7. Feed rates in ECG vary with a grinding method.
8. Nozzles are used to _____________
9. Which of the following is true about ECM process?
10. Discrepancies are sometimes observed between theoretical and actual metal removal rates and electrode feed rates.
11. The insulation in ECM should have_____
12. ECM can also be called as un-controlled anodic dissolution.
13. What is faraday’s first law of electrolysis?
14. The tool in ECM should have which of the following properties?
15. Which of the following conditions are desirable for ECM?
16. Electrolyte should carry away the heat generated and products of the reaction.
17. Electrolyte flow plays an important role in ECM.
18. As compared to electrochemical machining (ECM), ECG consumes less power.
19. In ECM, shape of the cathode does not affect the shape of the machined product.
20. In electro-chemical grinding, grinding wheel is used as a cathode.
21. Conductivity of the solution can be increased by_____
22. In ECM, material removal rate does not depend on chemical properties of the anode material.
23. In ECM, electrode or tooling cost is fixed because_____
24. Which of the following holds true about electro-chemical machining?
25. Foreign particle in electrolyte or insulation failure within tool can cause_____