Engineering Questions with Answers - Multiple Choice Questions
Manufacturing Engineering – Electrochemical Machining
1 - Question
Which of the following is un-conventional machining process?
a) Grinding
b) Milling
c) Turning
d) Electro chemical machining
View Answer
Explanation: Electro chemical machining is an un-conventional machining process used for large material removal from the surface using electricity generated due to chemical reactions.
2 - Question
Which of the following is conventional machining process?
a) Electro chemical machining
b) Milling
c) Electron discharge machining
d) None of the mentioned
View Answer
Explanation: Milling is a conventional machining process used for material removal from the surface.
3 - Question
In ECM, heavy electrical sparks are created.
a) True
b) False
View Answer
Explanation: Sparks are generated in EDM, by using high voltage current, for proper erosion of material.
4 - Question
In ECM, tool does not touch the work piece.
a) True
b) False
View Answer
Explanation: Tool is very near to work piece but does not touch it in ECM.
5 - Question
Which of the following is correct about ECM?
a) Erosion of metal takes place as a reverse process of electroplating
b) Thermal stresses are induced
c) Mechanical stresses are induced
d) None of the mentioned
View Answer
Explanation: In ECM, erosion of metal takes place as reverse process of electroplating.
6 - Question
Which of the following material cannot be machined using electro chemical machining?
a) Iron
b) Aluminum
c) Copper
d) Wood
View Answer
Explanation: Wood is a bad conductor of electricity and hence cannot be machined using electro chemical machining.
7 - Question
Which of the following material can be machined using electro chemical machining?
a) Iron
b) Rubber
c) Plastic
d) Wood
View Answer
Explanation: Iron is a good conductor of electricity and hence can be machined using electro chemical machining.
8 - Question
Electrode gap in electro chemical machining is generally ranged from
a) 0.5 mm to 0.9 mm
b) 1.1 mm to 1.2 mm
c) 0.1 mm to 0.2 mm
d) 3.1 mm to 4.2 mm
View Answer
Explanation: Electrode gap in electro chemical machining is generally ranged from 0.1 mm to 0.2 mm.
9 - Question
Electrolytes used in ECM must posses
a) Low electrical conductivity
b) Low chemical stability
c) High electrical conductivity
d) None of the mentioned
View Answer
Explanation: Electrolytes used in ECM must have high electrical conductivity.
10 - Question
Which of the following is not a function of electrolyte in ECM?
a) It completes the circuit
b) It helps in electrochemical reaction
c) It carries away heat and waste product
d) It provide non reactive environment
View Answer
Explanation: Electrolyte provides reactive environment for chemical reactions to takes place