Advanced Machining Questions and Answers – ECM-Applications and Micro-ECM

Advanced Machining Questions and Answers 2021

This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “ECM-Applications and Micro-ECM”.

The workpiece material is extracted by metal anodic dissolution in the electrolyte in Micro-ECM, which is a non-traditional cutting process. The workpiece is connected to the anode, and the electrode is connected to the power supply as a cathode. Around the electrode, only hydrogen bubbles are formed. Faraday’s law of electrolysis is the foundation of electrochemical machining (ECM). The mass of a metal altered by an electrode is proportional to the quantity of electrical charges transferred to that electrode, according to Faraday’s law.

1. Which of the following use ECM for different applications?
a) Gas turbines
b) Jet engines
c) Bio medical implants
d) All of the mentioned

Explanation: ECM is used in a variety of industries, including gas turbines, jet engines, vehicles, and medicine.

2. Which of the following processes can be done using ECM?
a) Die sinking
b) Profiling and contouring
c) Drilling and trepanning
d) All of the mentioned

Explanation: Die-sinking, trepanning, drilling, contouring, grinding, and profiling are all possible with ECM.

3. Which of the following material cannot be machined using ECM?
a) High strength alloys
b) Hardened steels
c) Nonconductive materials
d) All of the mentioned
View Answer

Answer: c
Explanation: Since ECM can be used to machine high-strength alloys and hardened steels, it has a wide range of cost-effective applications.

4. ECM is used to _________ the sharp edges produced after rough cuts.
a) Enhance
b) Dull
c) Improve
d) None of the mentioned

Explanation: Sharp edges that are created after rough cuts are dulled using the deburring process by ECM.

5. ECM is usually characterized as low accuracy machining, for which of the following reason?a) a)Narrow gap width
b) Wider gap width
c) High current densities
d) All of the mentioned

Explanation: Because of its larger machining gap, ECM is often referred to as low-accuracy machining.

6. In micro ECM, which of the following is used as micro tool?
a) Electrolyte jet
b) Electrodes
c) Power supply
d) All of the mentioned

Explanation: In micro ECM, the electrolyte jet serves as a micro method for machining.

7. Micro ECM is used to machine which type of parts?
a) Large parts
b) Micro parts
c) Normal sized parts
d) All of the mentioned

Explanation: Micro ECM is used to machine micro components varying in size from micro to mesoscale.

8. Which of the following produces small indents and cavities using micro ECM?
a) Moving the work piece
b) Switching the pulse current
c) Moving the work piece & Switching the pulse current
d) None of the mentioned

Explanation: Micro ECM may be used for indentation and cavitation by rotating the work piece or flipping the pulse present.

The workpiece material is extracted by metal anodic dissolution in the electrolyte in Micro-ECM, which is a non-traditional cutting process. The workpiece is connected to the anode, and the electrode is connected to the power supply as a cathode. Around the electrode, only hydrogen bubbles are formed.

 

 

 

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