Manufacturing Engineering Multiple Choice Questions on “Ultrasonic Machining”.
1. Which of the following is an unconventional process of machining?
a) Milling
b) USM
c) Drilling
d) None of the mentioned
Answer: b
Clarification: USM stands for ultrasonic machining process and it is an unconventional process of machining.
2. Ultrasonic machining process can be used for
a) Conductors
b) Insulators
c) Metals
d) All of the mentioned
Answer: d
Clarification: Ultrasonic machining is more versatile and can be used for the metal as well as non metal.
3. Which of the following is a conventional process of machining?
a) Electro chemical machining
b) Electron beam machining
c) Ultrasonic machining
d) None of the mentioned
Answer: d
Clarification: All of the mentioned are unconventional process of machining.
4. For machining of plastic material which of the unconventional process can be used effectively?
a) Electro chemical machining
b) Electron beam machining
c) Ultrasonic machining
d) None of the mentioned
Answer: c
Clarification: Ultrasonic machining is more versatile and can be used for the metal as well as non metal.
5. Material removal rate in USM increases with
a) Decrease in volume of work material per impact
b) Increase in volume of work material per impact
c) Decrease in frequency
d) Decrease in number of particle making impact per cycle
Answer: b
Clarification: Material removal rate in USM is proportional to the volume of work material per impact.
6. Material removal rate in USM increases with
a) Decrease in volume of work material per impact
b) Decrease in volume of work material per impact
c) Decrease in frequency
d) Increase in number of particle making impact per cycle
Answer: d
Clarification: Material removal rate in USM is proportional to the number of particle making impact per cycle.
7. Material removal rate in USM increases with
a) Decrease in volume of work material per impact
b) Decrease in volume of work material per impact
c) Increases in frequency
d) Decreases in the number of particle making impact per cycle
Answer: c
Clarification: Material removal rate in Ultrasonic machining is proportional to frequency.
8. Element of machine which is used to convert high frequency electrical impulse into mechanical vibration in USM is known as
a) Tool
b) Feeding unit
c) Transducer
d) None of the mentioned
Answer: c
Clarification: Transducer is a device which is used to convert one form of energy to other.
9. Which of the following elements of USM is used to apply working force during machining operation?
a) Tool
b) Feeding unit
c) Transducer
d) None of the mentioned
Answer: b
Clarification: Feeding unit is used to apply working force during a machining operation.
10. Material removal rate in USM increases with
a) Decrease in amplitude
b) Decrease in grain size of abrasives
c) Decrease in frequency
d) Increase in amplitude
Answer: d
Clarification: Material removal rate in ultrasonic machining is proportional to amplitude.