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WorksheetsCasting and Moulding Quiz (MES unit 3)
Total questions: 50
Worksheet time: 25mins
Which of the following is NOT an allowance provided on a pattern?
Shrinkage allowance
Draft allowance
Machining allowance
Density allowance
The property of moulding sand that allows gases to escape is:
Strength
Cohesiveness
Permeability
Dry strength
In sand casting, the top part of the mould is called:
Cope
Drag
Cheek
Pattern
Investment casting is also known as:
Lost-wax process
Die casting
Centrifugal casting
Shell casting
A pattern made in one piece is called:
Split pattern
Match plate pattern
Single-piece pattern
Skeleton pattern
Which sand test measures the moisture content?
Permeability test
Compression test
Sieve analysis
Moisture test
A blowhole defect in casting is mainly caused by:
Low pouring temperature
Excess moisture in sand
High venting
Too much ramming
The pattern allowance to facilitate removal from mould is:
Shake
Draft
Distortion
Machining
In sand testing, permeability number is:
Directly proportional to grain size
Inversely proportional to grain size
Zero for dry sand
Not related to grain size
Investment casting is best suited for:
Large parts
Complex small parts
Only ferrous components
Low melting metals only
Rolling reduces thickness by:
Shear
Compression
Tension
Bending
In a two-high reversing mill:
Rollers rotate only in one direction
Rolls rotate in both directions
Material moves continuously
Used only for wire drawing
Hot working is performed:
Below recrystallization temperature
At recrystallization temperature
Above recrystallization temperature
At room temperature
Cold working results in:
High ductility
Strain hardening
High toughness
Large grains
Forward extrusion involves:
Metal flows opposite to the ram
Metal flows in same direction as the ram
No flow of metal
Tangential flow
In backward extrusion, metal flow is:
Same direction as punch
Opposite to punch
Radial
Downward only
Sheet metal drawing is used to produce:
Wires
Hollow shapes like cups
Plates
Billets
Deep drawing occurs when:
Depth < Diameter
Depth = Diameter
Depth > Diameter
Depth is negligible
Wire drawing uses:
Compressive force
Tensile force
Bending force
Shear force
A common defect in deep drawing is:
Hot tears
Wrinkling
Cold shuts
Blowholes
In arc welding, heat is generated by:
Friction
Electrical resistance
Chemical reaction
Electric arc
The temperature of oxy-acetylene flame is:
1500°C
2200°C
3100°C
5500°C
A carburizing flame has:
Excess oxygen
Excess acetylene
Equal oxygen & acetylene
No oxygen
TIG welding uses:
Consumable electrode
Non-consumable tungsten electrode
No filler rod
No shielding gas
MIG welding uses:
Tungsten electrode
Consumable electrode
Consumable electrode + shielding gas
No filler metal
The shielding gas in MIG welding is:
Nitrogen
Argon
Oxygen
Fluorine
Spot welding is:
Fusion welding
Pressure welding
Gas welding
Arc welding
Seam welding is used for:
Fuel drums
Wires
Casting repair
Heavy forgings
Thermit welding uses:
Arc heat
Gas flame
Chemical exothermic reaction
Laser beam
Laser beam welding is ideal for:
Thick plates
Highly conductive materials
Precision micro-welding
Dirty joints
Arc blow occurs in:
AC welding
DC welding
Spot welding
Ultrasonic welding
A defect caused by insufficient penetration:
Underfill
Undercut
Lack of fusion
Overlap
Brazing uses filler metal with melting point:
Above 450°C
Below 450°C
Exactly 450°C
Same as base metal
Soldering uses:
Aluminum filler
Lead-tin alloy
Copper-tin alloy
Gold alloy
Soldering temperature range:
100–200°C
200–450°C
450–800°C
800–1400°C
Which factor is most influenced by pattern size and shape in casting?
Sand permeability
Metal shrinkage
Pattern size & shape
Pouring temperature
Sand with 20% clay and 6% moisture is suitable for which type of sand?
Green sand
Dry sand
Loam mould
Investment casting
How is the area reduction ratio in wire drawing calculated?
Final/Initial area
(Initial–Final)/Initial area
Initial/Final area
Product of both
Which process increases forgeability?
Cold working
Hot working
Hardness
Carbon content
Flash forms in which forging process?
Open die forging
Closed die forging
Rolling
Drawing
What is the main advantage of investment casting?
Low cost
High dimensional accuracy
Fast production
No pattern needed
How is tungsten contamination in TIG welding avoided?
High current
Short arc length
Long arc length
No shielding gas
What is the heat source in friction welding?
Resistance
Arc
Mechanical rubbing
Laser
A cup of 80 mm diameter and 100 mm depth is produced by which process?
Shallow drawing
Deep drawing
Bending
Forging
Grain fineness (AFS) is measured by:
Moisture test
Sieve analysis
Permeability test
Strength test
Which of the following is a superiority of MIG welding over TIG welding?
Higher welding speed
Better quality
Less gas needed
No filler metal
Where is the neutral plane in rolling?
Stress max
No slip occurs
Metal fractures
Shear = zero
An oxidizing flame is used for:
Mild steel
Stainless steel
Copper/brass
Aluminium
How is the extrusion ratio defined?
Initial x final area
Final/Initial area
Initial/Final area
Length/Diameter
Which defect is caused due to improper venting?
Misrun
Blowhole
Cold shut
Shift
