Q.1
Which of the following is true about USM?
  • a) In USM, tool needs to be changed frequently
  • b) USM consumes less power
  • c) USM can be used for soft materials
  • d) In USM, workpiece is vibrated at ultrasonic frequency
Q.2
In USM, the bottom surfaces of blind holes tend to become concave due to _____
  • a) insufficient slurry circulation
  • b) resistance to abrasive particles
  • c) ineffective slurry circulation
  • d) high frequency of the vibrations
Q.3
Which of the following pumps is used in USM?
  • a) Re-circulating pump
  • b) Centrifugal pump
  • c) Vane pump
  • d) Reciprocating pump
Q.4
Which of the following is not a part of the ultrasonic machine used in USM?
  • a) Generator
  • b) Acoustic head
  • c) Slurry pump
  • d) Lead-screw
Q.5
The primary purpose of the transducer is _____
  • a) to make uniform mixture of the slurry and the abrasive particles
  • b) to take filter the slurry after the operation
  • c) to convert energy
  • d) to cool the tool
Q.6
The acoustic head consists of how many parts?
  • a) 2
  • b) 3
  • c) 4
  • d) 5
Q.7
Which of the following is not the alternative name for the trunk in USM?
  • a) horn
  • b) concentrator
  • c) shaft
  • d) shank
Q.8
Tool in USM is subjected to vibratory loads.
  • a) True
  • b) False
Q.9
The tool is joined to the trunk by _____
  • a) riveted joint
  • b) welded joint
  • c) brazing
  • d) honing
Q.10
Tool geometry does not affect the performance of the USM process.
  • a) True
  • b) False
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