Advanced Machining Questions and Answers – USM – Material Removal

This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “USM – Material Removal”.

1. By which of the following means, material is removed in USM?
a) Mechanical abrasion
b) Microchipping
c) Cavitation
d) All of the mentioned
View Answer

Answer: d
Explanation: In Ultrasonic Machining, material is removed by any of the above means.

2. What is the percentage of contribution of cavitation to the total material removed?
a) <5%
b) 5 – 10 %
c) 10 – 20 %
d) 20 – 50 %
View Answer

Answer: a
Explanation: Cavitation contributes to only less than 5 % of total material removed.

3. In the following mechanisms, which one is dominant in material removal?
a) Hammering
b) Cavitation
c) Microchipping
d) None of the mentioned
View Answer

Answer: a
Explanation: Hammering is dominant mechanism in material removal of USM.

4. When machining porous material, which type of mechanism is introduces?
a) Abrasion
b) Erosion
c) Corrosion
d) Vaporization
View Answer

Answer: b
Explanation: Material removal of porous material takes place by erosion.

5. The rate of material removal depends on which of the following features?
a) Frequency
b) Static Pressure
c) Machining area
d) All of the mentioned
View Answer

Answer: d
Explanation: Material removal rate depends on all the above mentioned factors.
Sanfoundry Certification Contest of the Month is Live. 100+ Subjects. Participate Now!

6. The machinability of USM depends on brittleness criterion.
a) True
b) False
View Answer

Answer: a
Explanation: Both machinability and MRR depends on brittleness of material.

7. Which of the following are the features of tool affecting MRR in USM?
a) Hardness
b) Wearability
c) Accuracy
d) Mounting
View Answer

Answer: d
Explanation: Different features of tool also affect the material removal in USM.

8. What is the machinability rate of glass by USM?
a) 25%
b) 50%
c) 75%
d) 100%
View Answer

Answer: d
Explanation: In the case of brittle materials, Ultrasonic Machining’s MRR is very high.

Sanfoundry Global Education & Learning Series – Advanced Machining.


To practice all areas of Advanced Machining, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

Subscribe to our Newsletters (Subject-wise). Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!

Youtube | Telegram | LinkedIn | Instagram | Facebook | Twitter | Pinterest
Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

Subscribe to his free Masterclasses at Youtube & discussions at Telegram SanfoundryClasses.