Top 550+ Solved Unconventional Machine Process (UMP) MCQ Questions Answer
Q. With an increase in unmanned machining hours, what happens to the efficiency of ECM?
a. increases
b. reduces
c. decreases
d. increase and then decrease
Q. Which type of damage is caused by deterioration which is caused by spark?
a. reparable
b. irreparable
c. all of the mentioned
d. none of the mentioned
Q. Which of the following use ECM for different applications?
a. gas turbines
b. jet engines
c. bio medical implants
d. all of the mentioned
Q. 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
Q. 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
Q. ECM is used to the sharp edges produced after rough cuts.
a. enhance
b. dull
c. improve
d. none of the mentioned
Q. ECM is usually characterized as low accuracy machining, for which of the following reason?
a. narrow gap width
b. wider gap width
c. high current densities
d. all of the mentioned
Q. 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
Q. 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
Q. 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
Q. What fraction of tool will always be in contact with the work piece?
a. half
b. full
c. no contact
d. quarter
Q. How much amount of wear is present in the tool used in Electrochemical machining?
a. no wear
b. low
c. medium
d. high
Q. Compared to other processes, machining is done at voltages for high rates of material removal.
a. low
b. medium
c. high
d. very low
Q. Very small dimensions, up to which value can be controlled using ECM?
a. 0.01 mm
b. 0.05 mm
c. 0.07 mm
d. 0.12 mm
Q. Complicated profiles can be machined in how many operations in Electrochemical machining?
a. single
b. double
c. triple
d. multiple