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WorksheetsRevision Learning Outcome 16
Total questions: 40
Worksheet time: 13mins
Name
Class
Date
1.
Where the fixed half of the mould is attached ?
a)
With moving platen
b)
With staionary platen
c)
With core plate
d)
With cavity plate
2.
Where mvoing half of the mould is attached ?
a)
Moving platen
b)
Stationary platen
c)
Cavity plate
d)
Core plate
3.
Which of the following part forms the extermal shape of the moulding
a)
Core
b)
Cavity
c)
Impression
d)
Registering
4.
What is the name of the space between core & cavity ?
a)
Core
b)
Cavity
c)
Impression
d)
Component
5.
From which material sprue bush is made ?
a)
Mild steel
b)
Nickel chrome steel
c)
Cast iron
d)
Wrought Iron
6.
Which of the following part forms the internal shape of the component ?
a)
Core
b)
Cavity
c)
Impression
d)
Heel block
7.
Which part reducing the seating area of ejector plate ?
a)
Register ring
b)
Sprue bush
c)
Rest buttons
d)
Heel blocks
8.
Which part provide space for the ejector plate assembly ?
a)
Rest buttons
b)
Runner
c)
guide piller
d)
Heel blocks
9.
Which of the following channel is connect the sprue with the impression?
a)
Gate
b)
Mould plate
c)
Runner
d)
Cavity
10.
What is the relation between runner size and gate size ?
a)
Gate cross section is begger than runner
b)
Runner and gate should same size
c)
Runner cross section is bigger than gate
d)
No relation
11.
When sprue bush with spherical recess used ?
a)
When combined nozzle is used
b)
When machine nozzle not fitted
c)
When flat ended nozzle is used
d)
When a spherical front ended nozzle is used
12.
What is the included angle of sprue bush ?
a)
1 ° - 2 °
b)
3 ° - 5 °
c)
6 ° - 8 °
d)
8 ° - 10 °
13.
Which type of hole sprue bush having?
a)
Straight hole
b)
Stepped hole
c)
Counter bore hole
d)
Taper hole
14.
What is the function of register ring ?
a)
It aligns the mould to the machine
b)
It helps to eject the component
c)
It aligns the core & cavity
d)
It aligns guide piller & guide bush
15.
What is the fit between sprue bush and reigster ring ?
a)
Slide fit
b)
Press fit
c)
Transition fit
d)
Interference fit
16.
In which hole register ring located for centering?
a)
Centre hole of machine fixed platten
b)
Centre hole of machine movable platen
c)
Centre hole of core plate
d)
Centre hole of cavity plate
17.
What is the fit between guide piller & guide bush ?
a)
H7 m6
b)
H7 g6
c)
H7 k6
d)
H7 h6
18.
What change occured when thermoplastic material solidify ?
a)
Material contracts
b)
the material enlarged
c)
No change occurred
d)
the material getting soft
19.
Which part align core and cavity half ?
a)
Guide pins & bushes
b)
Sprue bush
c)
Register ring
d)
Ejector pins
20.
What property of material is required to menufacture guid piller & bush ?
a)
Ductility
b)
Maliability
c)
Wear resistance property
d)
Softness
21.
What will be the problem if cavity half and core half is not align properly ?
a)
Moulding colour will change
b)
Will not face any problem
c)
Moulding will not get uniform wall thickness
d)
Damage the guide pin & bush
22.
In which factor the amount of shrinkage depends upon ?
a)
Mould material used
b)
Tolerance of cavity
c)
Plastic material used
d)
Shape of the cavity
23.
What will be the name of the ejector grid where the ejector plate assembly is completely enclosed ?
a)
Inline jector grid
b)
Circular support block grid
c)
Frame type ejector grid
d)
Ejector plate
24.
Which type of ejection construction consist of two rectangular support blocks mounted on a back plate ?
a)
Circular support block grid
b)
Frame type ejection grid
c)
Inline ejector grid
d)
Ejector plate assembly
25.
Which of the following assembly is consist of ejector plate , retaining plate and ejector rod ?
a)
Ejector grid assembly
b)
Ejector plate assembly
c)
Runner assembly
d)
Piller & bush assembly
26.
Which type of ejector grid passes through the ejector plate assembly ?
a)
Inline ejector grid
b)
Frame type ejector grid
c)
Circular support block grid
d)
Ejector rod
27.
Which of the ejection return system can be operated indipendently ?
a)
Hydraulic return system
b)
Spring return system
c)
Push back pin return system
d)
Ejector plate assembly return system
28.
Which return system can be designed when ejection force is very less ?
a)
Push back pin returns ystem
b)
Ejector plate return system
c)
Hydralic return system
d)
Spring return system
29.
Which element of ejector return system are flush with the mould plate surface ?
a)
Rest buttons
b)
Push back pin
c)
Stop pin
d)
Ejector rod
30.
The Ejector rod is attached with which plate ?
a)
Ejector retainer plate
b)
Core plate
c)
Cavity plate
d)
Ejector plate
31.
In which defect a boss is formed on the moulding?
a)
If the ejector pin is projects above the core
b)
If the ejector pin sunk below the core
c)
If the ejector pin is flush with the top of the core
d)
If the pin is hard
32.
For which defect a sink mark will form on the moulding ?
a)
If the ejector pin sink below the core
b)
If the ejector pin flush with the core
c)
If the ejector pin projects above the core
d)
If pin is hard
33.
In which ejection process, rectanuglar ejector pin used for slender parts ?
a)
Valve ejection
b)
Blade ejection
c)
Air ejection
d)
Pin ejection
34.
What is the method, where moulding is ejected by means of a hollow ejector pin ?
a)
Pin ejection
b)
Blade ejection
c)
Value ejection
d)
Sleeve ejection
35.
In which type of ejection very large diameter of ejection pin is used ?
a)
Blade ejection
b)
Valve ejection
c)
Pin ejection
d)
Air ejection
36.
Which method of ejection is adopted for ejectiing moulding with thin wall sections ?
a)
Pin ejection
b)
Sleeve ejection
c)
Stripper plates ejection
d)
Valve election
37.
Which ejection process can provide positive ejection around a local core pin ?
a)
Valve ejection
b)
Air ejection
c)
Sleeve ejection
d)
Stripper bar ejection
38.
Which of the following ejectors system returns ?
a)
Push back pin
b)
Ejector pin
c)
Sprue puller pin
d)
Guide pin
39.
Which ejector element is used for thin walled box type component ?
a)
D' shaped ejector pin
b)
round ejector pin
c)
Sprue puller
d)
Stepped round pin
40.
Which part is used to pull the sprue when mould opens ?
a)
Runner pullers
b)
sprue pullers
c)
Ejector pin
d)
Sleeve ejector
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