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WorksheetsUNCONVENTIONAL MACHINING PROCESSES-MODEL 1-SET 1-PART A
Total questions: 30
Worksheet time: 15mins
Name
Class
Date
1.
How does the current pass between the two electrodes in ECM?
a)
Electrolytic solution
b)
Direct contact of electrodes
c)
All of the mentioned
d)
None of the mentioned
2.
What is the value of velocity with which, electrolyte flows in the inter electrode gap?
a)
>1 m/s
b)
>3 m/s
c)
>5 m/s
d)
>10 m/s
3.
Of the following, electrolyte removes which of the dissolution products?
a)
Metal hydroxides
b)
Heat
c)
Gas bubbles
d)
All of the mentioned
4.
Which of the following come under the main components of ECM?
a)
Feed control system
b)
Work piece holding devices
c)
Electrolyte supply system
d)
All of the mentioned
5.
Feed control system is responsible for which action in ECM?
a)
Giving feed to tool
b)
Electrolyte supply
c)
Power supply
d)
None of the mentioned
6.
In ECM equipment, what is the role of electrolyte supply system?
a)
Giving feed to tool
b)
Electrolyte supply
c)
Power supply
d)
None of the mentioned
7.
Which of the following are commonly used magnetic materials in finishing process?
a)
Silicon Carbide
b)
Aluminium Oxide
c)
Cubic Boron Nitride
d)
All of the mentioned
8.
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
9.
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
10.
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
11.
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
12.
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
13.
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
14.
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
15.
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
16.
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
17.
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
18.
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
19.
Non-Traditional machining is recommended when we need which of the following features?
a)
Complex shapes
b)
High surface quality
c)
Low-rigidity structures
d)
All of the mentioned
20.
Non-Traditional machining can also be called as _______
a)
Contact Machining
b)
Non-contact machining
c)
Partial contact machining
d)
Half contact machining
21.
In which of the following industries, Non-traditional machining methods play an important role?
a)
Automobile
b)
Aerospace
c)
Medical
d)
All of the mentioned
22.
Different classifications of Non-traditional machining based on source of energy are ________
a)
Mechanical
b)
Thermal
c)
Chemical and electro-chemical.
d)
All of the mentioned
23.
In mechanical machining, material is removed by ___________
a)
Erosion
b)
Corrosion
c)
Abrasion
d)
Vaporization
24.
Material in thermal machining is removed by which of the following means?
a)
Vaporization
b)
Melting
c)
Electro-plating
d)
All of the mentioned
25.
Which of the following process comes under mechanical machining?
a)
USM
b)
EDM
c)
LBM
d)
PAM
26.
Surface defects that may be occurred during thermal machining are ________
a)
Micro cracking
b)
Heat affected zones
c)
Striations
d)
All of the mentioned
27.
Sources used in thermal machining are ________
a)
Ions
b)
Plasma
c)
Electrons
d)
All of the mentioned
28.
Vacuum is the machining medium for ________
a)
LBM
b)
WJM
c)
EBM
d)
None of the mentioned
29.
In chemical machining is material removal takes by?
a)
Chemical reaction
b)
Erosion
c)
Electron removal
d)
None of the mentioned
30.
Which of the following is an example of hybrid machining?
a)
Ultrasonic Machining
b)
Electron Beam Machining
c)
Ultrasonic assisted electrochemical machining
d)
Laser Beam Machining
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