Top 550+ Solved Unconventional Machine Process (UMP) MCQ Questions Answer
Q. What is the full form of PBM in the advanced machining processes?
a. plasma beam manufacturing
b. plasma beam machining
c. plasma blast manufacturing
d. plasma blast machining
Q. PBM is the only process which works faster in steel than steel.
a. stainless, mild
b. mild, stainless
c. remains same all
d. all of the mentioned
Q. What is the value of velocity of plasma jet in Plasma beam machining?
a. 100 m/sec
b. 300 m/sec
c. 400 m/sec
d. 500 m/sec
Q. What is the value of material removal rate in Plasma Beam Machining process?
a. 50 cm3/min
b. 100 cm3/min
c. 150 cm3/min
d. 200 cm3/min
Q. What is the value of specific energy used in Plasma beam machining process?
a. 100 w/(cm3-min)
b. 200 w/(cm3-min)
c. 300 w/(cm3-min)
d. 400 w/(cm3-min)
Q. What is the value of the current used in PBM process?
a. up to 200 a
b. up to 400 a
c. up to 600 a
d. up to 800 a
Q. What is the maximum value of the thickness used in PBM process?
a. 100 mm
b. 200 mm
c. 300 mm
d. 400 mm
Q. Which of the following are the different shielded plasmas used in PBM?
a. gas-shielded plasma
b. water-shielded plasma
c. gas-shielded & water-shielded plasma
d. none of the mentioned
Q. Material removal rates depend on which of the following factors?
a. work piece material
b. type of cutting
c. shielding gases
d. all of the mentioned
Q. A low power factors indicates energy required and removal rates.
a. low, low
b. low, high
c. high, low
d. high, high
Q. What happens to the machining speed if the thickness of material is increased in PBM?
a. decreases
b. increases
c. enhanced
d. remains same
Q. What is the machining speed required for machining of 12mm thick plate with 220 kW energy?
a. 1000 mm/min
b. 1500 mm/min
c. 2000 mm/min
d. 2500mm/min
Q. The cut edge of the material tends to be than the base metal in PBM.
a. smoother
b. harder
c. same as
d. none of the mentioned
Q. How much thickness of cracks may arise beyond HAZ due to rapid cooling?
a. 1.6 mm
b. 2.6 mm
c. 3.6 mm
d. 4.6 mm
Q. What are the values of tolerances obtained by using PBM?
a. ± 0.6 mm
b. ± 1.6 mm
c. ± 2.6 mm
d. ± 3.6 mm