WorksheetsAMT UNIT 2 ONLINE QUIZ
Total questions: 20
Worksheet time: 10mins
Cladding is best described as:
Chemical diffusion of atoms into surface
Bonding of dissimilar metals for corrosion resistance and strength
Spraying of molten powder
Electrochemical deposition
Honing uses which type of tool?
Abrasive sticks mounted on mandrel
Polishing cloth
Grinding wheel
Single point tool
Why is hot machining used for hard-to-machine alloys?
It reduces cutting forces and tool wear
It increases tool hardness
It makes the workpiece softer permanently
It increases thermal conductivity of the tool
Why is electroplating widely used for decorative coatings?
Provides bright finish and corrosion resistance
Increases hardness only
Reduces thermal expansion
Makes component non-magnetic
Burnishing improves surface finish by:
Material removal
Chemical reaction
Melting and solidification
Plastic deformation
Galvanizing deposits a layer of:
Copper
Zinc
Nickel
Tin
Which machining process is used for achieving tolerances in micron or sub-micron range?
Conventional turning
Ultra-precision machining
Broaching
Shaping
Why is honing often used in engine cylinders?
To reduce thermal expansion
To produce cross-hatch pattern for oil retention
To improve electrical properties
To reduce hardness
Micro and nano machining processes are widely used in:
Shipbuilding
Aerospace component repair
MEMS and semiconductor industries
Agricultural tools
Main advantage of burnishing over grinding is:
High material removal rate
Ability to cut hard metals
Lower thermal conductivity required
No material removal, only surface hardening and smoothening
Physical vapour deposition (PVD) includes:
Carburizing
Nitriding
Sputtering and evaporation
Hot dipping
Buffing is done using:
Soft wheel with fine abrasive paste
Abrasive particles bonded in wheel
Jet of water
Steel shot
Shot peening is mainly done to:
Improve ductility
Induce compressive stresses for fatigue strength improvement
Reduce corrosion resistance
Remove material
High-speed machining mainly uses:
High cutting speed and low feed
Low cutting speed and high feed
High depth of cut
Slow cutting with lubrication
Lapping is carried out using:
A cutting tool
Abrasive slurry and lap plate
Electrode discharge
Buffing wheel
Powder coating is a process in which:
Fine dry powders are electrostatically sprayed and baked
Powder is mixed into molten metal
Metal surface is polished by powder abrasives
In hot machining, the cutting tool is:
Heated before machining
Cooled using liquid nitrogen
Applied to a preheated workpiece
Rotated at high frequency
Which of the following is a hot-dip process?
Galvanizing
Electroplating
Anodizing
Spray coating
Vapour deposition process in which chemical reaction occurs is:
CVD
PVD
Electroplating
Cladding
What is the difference between polishing and buffing?
Polishing is rougher, buffing is finer finishing
Buffing removes material, polishing does not
Polishing is chemical, buffing is mechanical
Both are identical processes
