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WorksheetsSimulasi Ujian Akhir Semester Keramik Mutakhir
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
The word ‘ceramic’ meant for ______________.
a)
soft material
b)
hard material
c)
burnt material
d)
dry material
2.
Not a characteristic property of ceramic material
a)
high temperature stability
b)
high mechanical strength
c)
low elongation
d)
low hardness
3.
Major ingredients of traditional ceramics
a)
silica
b)
clay
c)
feldspar
d)
all
4.
Not a major contributor of engineering ceramics
a)
SiC
b)
SiO2
c)
Si3N4
d)
Al2O3
5.
The following ceramic product is mostly used as pigment in paints
a)
TiO2
b)
SiO2
c)
UO2
d)
ZrO2
6.
Most commercial glasses consist of
a)
lime
b)
soda
c)
silica
d)
all
7.
Hot isostatic pressing is not a viable option if the chief criterion is
a)
strength without grain gowth
b)
lost cost
c)
zero porosity
d)
processing refractory ceramics
8.
During sintering densification is not due to
a)
atomic diffusion
b)
surface diffusion
c)
bulk diffusion
d)
grain growth
9.
How is Young’s modulus of elasticity defined?
a)
P/A
b)
∆l/l
c)
Pl/∆l.A
d)
m/v
10.
Which of the following is false about ceramic structures?
a)
They are made up of two or more different elements
b)
More complex than metal structures
c)
They are electrically neutral
d)
Less complex than metal structures
11.
Which of the following bonds are present in ceramic structures?
a)
Ionics bonds only
b)
Covalent bonds only
c)
Ionic, covalent and a mix of ionic and covalent bond
d)
Mix of ionic and covalent bond only
12.
Which of the following is an aluminosilicate?
a)
Porcelain
b)
Forsterite
c)
Cordierite
d)
Steatite
13.
What kind of bonds are present in diamond?
a)
Covalent bond only
b)
Ionic bond only
c)
Mix of covalent and ionic bond
d)
Metallic bonds
14.
What is a difference between carbon and ceramic?
a)
Both are hard
b)
Both are non metallic
c)
Both have covalent bonds
d)
Both have very high thermal conductivity
15.
Which of the following test are done to find out the mechanical behavior of ceramics?
a)
Compressive test
b)
Transverse bending test
c)
Shearing test
d)
Tensile test
16.
What is shape of a stress strain curve for ceramics?
a)
Hyperbola
b)
Inverted parabola
c)
Straight line
d)
Parabola
17.
Which of the point is there in a stress strain curve for a ceramic?
a)
Ultimate tensile strength
b)
Fracture point
c)
Limit of proportionality
d)
Yield point
18.
Which of the following shows the best fracture strength?
a)
Zircon
b)
Macor
c)
Alumina
d)
There fracture strength are not comparable
19.
In terms of which of the following properties, metals are better than ceramics?
a)
Hardness
b)
Ductility
c)
Toughness
d)
Yield Strength
20.
Which of the following cannot be used as bio-materials?
a)
Metals
b)
Ceramics
c)
Polymers
d)
None of the mentioned
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