This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “Electrochemical Deburring – 1”.
1. In advanced machining processes, full form of ECDB is _________
a) Electrochemical Drill buffing
b) Electrochemical Dimension Breaking
c) Electrochemical Deburring
d) Electrochemical Dimensioning
View Answer
Explanation: In advanced machining processes, full form of ECDB is Electrochemical Deburring.
2. Which of the following processes can be used for deburring?
a) Water blasting
b) Abrasive flow machining
c) Electrochemical deburring
d) All of the mentioned
View Answer
Explanation: Different methods used for deburring include vibratory and barrel finishing, tumbling, water blasting, Abrasive flow machining, Electrochemical deburring and many more.
3. In the following electrodes, on which one the process of deburring takes place?
a) Cathode
b) Anode
c) Cathode & Anode
d) None of the mentioned
View Answer
Explanation: Anode is the electrode, on which, the process of deburring is done.
4. Burrs are removed at which amount of current densities below?
a) Very low
b) Low
c) High
d) Medium
View Answer
Explanation: High current densities are required to remove the burrs from the work pieces.
5. After deburring is done, which of the following is formed?
a) Flat surfaces
b) Controlled radius
c) Sharp edges
d) All of the mentioned
View Answer
Explanation: Dimensions of the part are changes by the removal of burrs leaving a controlled radius.
6. To which components mentioned below, ECDM can be applied?
a) Spline shafts
b) Milled components
c) Drilled holes
d) All of the mentioned
View Answer
Explanation: ECDB can be applied to gears, spline shafts, milled components, drilled holes, and punched blanks.
7. What are the values of deburring speeds used in ECDB process?
a) 100 to 200 mm/min
b) 200 to 400 mm/min
c) 400 to 500 mm/min
d) 500 to 700 mm/min
View Answer
Explanation: Values of speeds of deburring, range between 400 to 500 mm/min.
8. What are the normal cycle times for deburring process using ECDB?
a) 10 to 20 s
b) 30 to 45 s
c) 50 to 70 s
d) 80 to 100 s
View Answer
Explanation: The normal cycle times are between 30 to 45 s after which, spindle is retracted and part is removed.
9. What is the value of burr height that can be removed using ECDB process?
a) 0.1 mm
b) 0.3 mm
c) 0.5 mm
d) 0.7 mm
View Answer
Explanation: Burr height of around 0.5 mm can be removed using ECDB process.
10. Burr is removed to a radius of _________ in ECDB process.
a) 0.01 to 0.04 mm
b) 0.05 to 0.20 mm
c) 0.25 to 0.40 mm
d) 0.50 to 0.75 mm
View Answer
Explanation: Burr of height 0.5 mm to a radius of 0.05 to 0.2 mm can be removed using ECDB.
11. What is the value of surface roughness obtained in Electrochemical deburring process?
a) 0.1 to 1 µm
b) 1 to 2 µm
c) 2 to 4 µm
d) 5 to 8 µm
View Answer
Explanation: Surface roughness obtained in ECDB process is about 2 to 4 µm.
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