Top 550+ Solved Unconventional Machine Process (UMP) MCQ Questions Answer
Q. Di-electric system used in WEDM process is similar to that of the process.
a. conventional drilling
b. conventional milling
c. conventional edm
d. broaching
Q. In wire-cut EDM, a moving wire is used to
a. remove the burr
b. cut complex outlines
c. melt the material
d. make the way for the di-electric fluid
Q. Wire electric discharge (ED) machining is based on the same principle as that of
a. hydro-dynamic edm
b. die-sink edm
c. polar edm
d. non-conventional edm
Q. The only difference between die-sink EDM and wire cut EDM is the
a. way of material removal
b. electrode used for the machining
c. type of materials machined
d. processing time
Q. During wire cut EDM, the size of the cavity produced by the wire while machining depends upon
a. material of the workpiece
b. di-electric fluid used
c. wire material
d. electric current
Q. Sparking gap is the distance between
a. the workpiece and the cnc table
b. the workpiece and the electrode wire
c. the electrode wire and the di-electric fluid
d. the workpiece and the spark plug
Q. The absolute minimum inner corner radius is
a. the wire radius minus the sparking gap width
b. the sparking gap width minus the wire radius
c. the wire radius plus the sparking gap width
d. double of the wire radius
Q. Which of the following component of the wire cut EDM machine does not get heated?
a. workpiece
b. electrode wire
c. di-electric fluid
d. coils
Q. Which of the following material properties sets restrictions to use wire cut EDM?
a. material type
b. melting point
c. material hardness
d. electrical conductivity
Q. grades wire are used in automatic re-threading mechanisms.
a. malleable
b. softer
c. harder
d. commercial
Q. For machining of high melting point materials, wires are used.
a. gallium
b. zinc coated
c. aluminium coated
d. silver
Q. is/are used as di-electric fluid in die sink EDM process.
a. pure water
b. silicone gel
c. petroleum products
d. epoxy resins