Explore topic-wise MCQs in Mechanical Engineering.

This section includes 382 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.

201.

In Ultrasonic Machining, Magnetostrictor is energized at ultrasonic frequency.

A. true
B. false
Answer» B. false
Discussion
202.

Frequency of tool’s oscillation in USM ranges between

A. 5-10 khz
B. 10-15 khz
C. 18-20 khz
D. 25-50 khz
Answer» D. 25-50 khz
Discussion
203.

USM removes materials using the                          tool.

A. perpendicularly rotating
B. perpendicularly oscillating
C. axially oscillating
D. inclined oscillating
Answer» D. inclined oscillating
Discussion
204.

Who discovered USM?

A. balamuth
B. paul o flawer
C. turing
D. steve john
Answer» B. paul o flawer
Discussion
205.

The introduction of compressed air to the water jet enhances the deburring action.

A. true
B. false
Answer» B. false
Discussion
206.

State whether the following statement is true or false, about Abrasive jet machining. “Using Abrasive jet machining, micro deburring of hypodermic needles can take place.”

A. true
B. false
Answer» B. false
Discussion
207.

Using abrasive jet machining, wire cleaning and insulation stripping take place without affecting the conductor.

A. true
B. false
Answer» B. false
Discussion
208.

05 mm.

A. 0.01 – 0.10 µm
B. 0.15 – 1.5 µm
C. 2.0 – 5.0 µm
D. 7.0 – 10.0 µm
Answer» C. 2.0 – 5.0 µm
Discussion
209.

In the following properties of abrasive grains, which of them changes rate of material removal?

A. size
B. strength
C. shape
D. all of the mentioned
Answer» E.
Discussion
210.

In the following properties of nozzle, which of them does not influence the MRR?

A. size
B. wear
C. outside temperature
D. distance from work piece
Answer» D. distance from work piece
Discussion
211.

. In advanced machining processes, what is the full form of AJM?

A. automatic jet manufacturing
B. abrasive jet machining
C. automated jet machining
D. abrasive jet manufacturing
Answer» C. automated jet machining
Discussion
212.

In Water jet machining, tool need not require sharpening once the machining is done.

A. true
B. false
Answer» B. false
Discussion
213.

In Water jet machining, cuts can be started at which place of workpiece?

A. from left
B. from right
C. from middle
D. from any point
Answer» E.
Discussion
214.

What is the tolerance limit range of thin materials in WJM?

A. ± 0.1 mm
B. ± 10 mm
C. ± 25 mm
D. ± 50 mm
Answer» D. ± 50 mm
Discussion
215.

8 – 25 mm.

A. 0.0001 – 0.025 m/min
B. 0.05 – 0.25 m/min
C. 0.5 – 200 m/min
D. 200 – 500 m/min
Answer» D. 200 – 500 m/min
Discussion
216.

10 – 0.30 mm.

A. 0.1 – 1 mm
B. 1 – 2 mm
C. 2 – 6 mm
D. 6 – 14 mm
Answer» D. 6 – 14 mm
Discussion
217.

What are the other applications where Magnetic abrasive finishing can be used?

A. removal of oxide layers
B. removal of protective coatings
C. chamfering
D. all of the mentioned
Answer» E.
Discussion
218.

State whether the following statement is true or false about Magnetic abrasive finishing. “Mirror finishing, removed burrs with lowering the accuracy of the shape are achieved by MAF.”

A. true
B. false
Answer» C.
Discussion
219.

Which of the following is an advantage of MAF over Electrolytic finishing?

A. disposing of electrolyte
B. cost effective
C. more flexible
D. more accuracy
Answer» B. cost effective
Discussion
220.

For obtaining a better finish using Magnetic abrasive finishing, tubes are rotated at which speeds?

A. very low
B. low
C. medium
D. very high
Answer» E.
Discussion
221.

Polishing in Magnetic abrasive finishing is done, by which action of material removal?

A. mechanical abrasion
B. mechanical erosion
C. chemical corrosion
D. material vaporization
Answer» B. mechanical erosion
Discussion
222.

In MAF, ceramic balls and the bearing rollers are placed in between which components?

A. abrasives and float
B. drive shaft and float
C. float and magnets
D. magnets and abrasives
Answer» C. float and magnets
Discussion
223.

Which of the following conditions is/are not suitable for finishing of ceramic balls?

A. controlled force
B. large abrasive sizes
C. small abrasive sizes
D. less harder abrasives
Answer» C. small abrasive sizes
Discussion
224.

Diamond abrasives used for finishing operation results in which type of surface defects?

A. deep pits
B. surface scratches
C. micro cracks
D. all of the mentioned
Answer» E.
Discussion
225.

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
Answer» D. volume fraction
Discussion
226.

Which of the following applications where MAF is used?

A. finishing of inner surfaces
B. polishing of balls and rollers
C. chamfering and deburring of gears
D. all of the mentioned
Answer» E.
Discussion
227.

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
Answer» B. false
Discussion
228.

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
Answer» E.
Discussion
229.

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
Answer» B. false
Discussion
230.

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
Answer» C. 30 microns
Discussion
231.

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
Answer» E.
Discussion
232.

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
Answer» B. perpendicular to work piece
Discussion
233.

Which of the following materials combine to form the magnetic abrasive brush in MAF?

A. work piece
B. magnetic and abrasive particles
C. magnets
D. all of the mentioned
Answer» E.
Discussion
234.

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
Answer» C. up to 2.6 m/s
Discussion
235.

Magnetic lines of force flows on which part of the work piece material?

A. through the work piece
B. over the surface
C. above the work piece
D. below the work piece
Answer» B. over the surface
Discussion
236.

In order to achieve uniform circulation of abrasives, the magnetic abrasives are undergone through which of the following?

A. stirring
B. oscillation
C. vibration
D. all of the mentioned
Answer» B. oscillation
Discussion
237.

Which of the following are commonly used abrasive materials in finishing process of MAF?

A. silicon carbide
B. aluminium oxide
C. cubic boron nitride
D. all of the mentioned
Answer» E.
Discussion
238.

Which of the following are commonly used magnetic materials in finishing process?

A. iron and iron oxides
B. nickel and cobalt
C. steel and stainless steel
D. all of the mentioned
Answer» E.
Discussion
239.

What are the size ranges of the abrasives used in Magnetic abrasive finishing?

A. 0.1 to 1 microns
B. 1 to 10 microns
C. 10 to 100 microns
D. 100 to 1000 microns
Answer» C. 10 to 100 microns
Discussion
240.

What are the sizes magnetic abrasive conglomerates required in the machining system of MAF?

A. 1 – 10 microns
B. 20 – 50 microns
C. 50 – 100 microns
D. 100 – 200 microns
Answer» D. 100 – 200 microns
Discussion
241.

Which of the following material/s is/are used to hold the abrasives, in MAF?

A. nonmagnetic materials
B. ferro magnetic materials
C. ceramic materials
D. none of the mentioned
Answer» C. ceramic materials
Discussion
242.

What is the other name of ferromagnetic material used for holding the abrasives in MAF?

A. magnetic abrasive conglomerate
B. magnetic abrasive holder
C. magnetic abrasive container
D. magnetic abrasive ampule
Answer» B. magnetic abrasive holder
Discussion
243.

State whether the following statement is true or false about Magnetic abrasive finishing. “Vibratory motion that is axial, is introduced in the magnetic field by the oscillation of magnetic poles.”

A. true
B. false
Answer» B. false
Discussion
244.

Which of the following materials can be machined using Magnetic Abrasive finishing?

A. alloy steels
B. ceramic materials
C. iron materials
D. all of the mentioned
Answer» E.
Discussion
245.

Which of the following components, come under machining system of Magnetic Abrasive finishing?

A. rotatory spindle
B. oscillating magnets
C. holding chuck
D. all of the mentioned
Answer» E.
Discussion
246.

Which of the following processes cannot be machined using Magnetic abrasive finishing?

A. surface finishing
B. surface polishing
C. hole drilling
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
247.

Which is the place, where Magnetic field assisted polishing was invented?

A. the united states of america
B. the united arab emirates
C. union of soviet socialist republics
D. japan
Answer» B. the united arab emirates
Discussion
248.

Magnetic Abrasive finishing is used for which of the following application/s?

A. surface finishing
B. cutting
C. drilling
D. boring
Answer» B. cutting
Discussion
249.

Which of the following motions are opted, in order to carry on with the Magnetic abrasive finishing?

A. rotary motion
B. oscillatory motion
C. vibratory motion
D. all of the mentioned
Answer» E.
Discussion
250.

Which of the following is not a magnetic field assisted machining process?

A. electro-plating process
B. magnetic abrasive finishing
C. magnetic float polishing
D. all of the mentioned
Answer» B. magnetic abrasive finishing
Discussion