Advanced Machining Questions and Answers – MAF – Process parameters and MRR

This set of Advanced Machining Processes Interview Questions and Answers for freshers focuses on “MAF – Process parameters and MRR”.

1. What is the limit of the roller speed used in MAF?
a) Up to 0.5 m/s
b) Up to 1.3 m/s
c) Up to 2.6 m/s
d) Up to 3.3 m/s
View Answer

Answer: b
Explanation: Roller speed used can be up to 1.3 m/s.

2. What is the value of magnetic field intensity used in MAF?
a) 0 – 0.53 Tesla
b) 0.6 – 0.70 Tesla
c) 0.70 – 0.90 Tesla
d) 0.90 – 1.1 Tesla
View Answer

Answer: a
Explanation: Value of the magnetic field intensity used in MAF range between 0 – 0.53 Tesla.

3. What is the value of magnetic pressure used in Magnetic abrasive machining?
a) 0 – 30 kPa
b) 50 – 100 kPa
c) 100 – 200 kPa
d) 200 – 500 kPa
View Answer

Answer: a
Explanation: In Magnetic abrasive finishing, value of magnetic pressure ranges between 0 – 30 kPa.
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4. What is the value of frequency used in Magnetic abrasive finishing process?
a) 1 – 10 Hz
b) 12 – 25 Hz
c) 30 – 50 Hz
d) 60 – 100 Hz
View Answer

Answer: b
Explanation: In MAF process, value of the frequencies used range between 12 – 25 Hz.

5. In which direction, oscillatory motion of magnets are carried out?
a) Axial to work piece
b) Perpendicular to work piece
c) Inclined to work piece
d) None of the mentioned
View Answer

Answer: a
Explanation: Axial oscillation motion of magnets takes with respect to work piece.

6. Which of the following surface defects are removed using Magnetic abrasive finishing?
a) Scratches
b) Hard spots
c) Lay lines and tool marks
d) All of the mentioned
View Answer

Answer: d
Explanation: All the surface defects mentioned above, can be removed using Magnetic abrasive finishing.

7. What is the value of the limited depth to which form errors, tapers, looping can be corrected?
a) 10 microns
b) 20 microns
c) 30 microns
d) 40 microns
View Answer

Answer: b
Explanation: Form errors, tapers, looping etc.., can be corrected up to a limited depth of 20 microns.
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8. State whether the following statement is true or false about magnetic abrasive finishing.
“Increasing the magnetic flux density raises the rate of material removal in finishing.”
a) True
b) False
View Answer

Answer: a
Explanation: In MAF, as the magnetic flux density increases, material removal rate increases.

9. Which of the following factors, does material removal rate depend on?
a) Magnetic flux density
b) Working clearance
c) Work piece material
d) All of the mentioned
View Answer

Answer: d
Explanation: All the factors mentioned above, are responsible for change in material removal rate.
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10. Which of the following factors does not affect the magnetic abrasive conglomerates in MAF?
a) Abrasive type
b) Abrasive size
c) Work piece material
d) Volume fraction
View Answer

Answer: c
Explanation: In Magnetic abrasive finishing, work piece material has no effect on magnetic abrasive conglomerates.

11. State whether the following statement is true or false about Magnetic abrasive finishing.
“Higher rates of material removal are obtained, with an increase in amplitude and frequency.”
a) True
b) False
View Answer

Answer: a
Explanation: As the amplitude and frequency increases, the rate of material removal increases.

Sanfoundry Global Education & Learning Series – Advanced Machining.

To practice all areas of Advanced Machining Processes for freshers attending interviews, 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]

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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.

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