1.
Which of the following cooling systems is used
in the injection moulding process to increase the solidification rate of components
made?
a)
Air jet cooling system
b) Water cooling system
c)
Cooling with free convection
d)
Cooling with fins
2.
Which of the following moulding processes is
widely used for the manufacturing of plastic bottles?
a)
Compression moulding
b)
Injection moulding
c)
Jet moulding
d) Blow moulding
3.
Which of the following processes of moulding is
widely used for the manufacturing of bottle caps and automotive dashboards?
a)
Compression moulding
b)
Transfer moulding
c) Injection moulding
d)
Jet moulding
4.
Which of the following is an example of
thermoplastic material?
a)
Camera bodies
b)
Automobile parts
c)
Electric plugs
d) Electric insulation
5.
The process of producing thin sheets by
squeezing a thermoplastic material between revolving cylinders is known as
a)
Transfer moulding
b)
Injection moulding
c)
Blow moulding
d)
Calendering
6.
Thermosetting materials are
a)
the plastics which can be softened even after
they have set and hardened
b) the plastics which require heat and
pressure to mould them Into shape
c)
both (a) and (b)
d)
none of the above
7.
The long plastic rods and tubes are produced by
a)
Compression moulding
b)
injection moulding
c)
Blow moulding
d) Extrusion
8.
The plastics which soften when heat is applied
with or without pressure, but require cooling to set them to call as
a)
thermosetting materials
b)
thermosetting materials
c) thermoplastic materials
d)
thermostatting materials
9.
Which of the following is not an application of the blow moulding process?
a)
Toy bodies
b) Refrigerator liners
c)
Bottles Refrigerator liners
d)
Pipes
10.
Which of the following material is not made by
injection moulding?
a)
Nuts
b) Tubes
c)
Car handles
d)
Electrical fittings
11.
The process of producing plastic components in
moulds without the application of pressure is known as
a)
Moulding
b)
Laminating
c)
Calendering
d) Casting
12.
Identify the product that can be not made by a compression moulding process.
a)
Automotive panels
b)
Washing machine housing
c) Bottles
d)
Gaskets
13.
Which of the following is incorrect regarding
compression moulding?
a)
Mould is simple & easy to manufacture
b)
No wastage of raw material
c)
Dimensional accuracy & surface finish of
products are good
d) Suitable for products with intricate shapes
14.
How many zones are available in the injection
moulding process?
a)
Two
b) Three
c)
Four
d)
Six
15.
During transfer moulding, plastic material is
transferred into a chamber called
a)
Sprue
b)
Pot
c) Mould cavity
d)
None
16.
What types of plastic can be recycled?
a) Plastics that are thermoplastics can be
recycled once melted.
b)
Oil-based plastics don’t degrade and can’t be
recycled.
c)
All types of plastic.
d)
Thermoplastics can be recycled when chilled to
minus 10 degrees
17.
Vacuum forming is a process of plastic
a) Heating, Stretching and then Vacuuming
b)
Injection Moulding
c)
using HDPE
d)
Just heating
18.
What ¡s the maximum thickness that can be
allowed for a plastics sheet in a vacuum forming process?
a)
3 mm
b)
3.1 mm
c) 3.2 mm
d)
3.3 mm
19.
What is the minimum thickness required by the
plastic for vacuum forming?
a) 0.125mm
b)
0.25 mm
c)
0.375 mm
d)
0.5 mm
20.
Which method to the highest production rate of
producing plastic parts at al
a)
compression moulding
b) injection moulding
c)
transfer moulding
d)
calendaring
21.
Choose the thermosetting plastic from the
following
a) Melamine formaldehyde
b)
Polyethylene
c)
Polyvinyl chloride
d)
acrylic