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3ranch Of Mate」 ョ]scien c e
Final ExaminatiOn
SutteCt:Spec■ oscOpy
Exanller:Dr.ヽ IOhammed Raditi
N ot霧 :Answer
2016・ 2015
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o発 ly four弩 鶴,stiOrJs{eaCh of l二 mttrk3)
■1‐ 3)Si3te faCicrs efectirg'ゼ ldih Cf spectrallires,3,d eXplair cre cfther.
b)CaiCむ late nuttber of energy subievels,energy spacittg betweer them′
and
hence桑 毬 ber cf a:icwed spe∝ raliines of the transた :。 n S1/2→
P3/2 じnder ettef桑 3i
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a.・ nei:c rieic oF O.ID l.
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Q2-a)State regions of elettromagneづ c rbdiatiOn in oだ erfrom high to low ene電
ソ
.
b)CalCコ late wavenumbers of high and iow edges of Paschen′ and Bracket
sensses′ then convett any wavenumberintc′ 1‐ wavdentth{nm)′ 2‐ ener到
{eV)′ 3‐
ener到
{」 ouiS)′
and4‐ frequency(MHz)。
Q3‐ a)State all allowed electronic transた lons of mclecule,wた
h a diagram shOwing
regions of these transitions.
b)The fundamental and lSt overtone are central at 1876 cm‐
1′
and 3724 cm‐ 1
respectively of 14N160′ then calculate,1‐ the wavenumber Of equ:libriurn vibration。
2-
the force constant.3‐ the wavenumber Of 4th overtone band′
4‐
anharmonic
constantand 5‐ dissociation energy.
NQ4‐
a)state selection rules of an al!owed electronic transtion for atOm。
l for C12 016
b)lfthe rOtaJonalspectraHines are equally spaced by 7.26 cm‐
molecu!e then′ calcu!ate,1)rOtaJonal constant.2)bond length。 3)the mOSt populated
rotationallevel at temperature of 500K.4)the wavenumber of mostintensive
spectralline at this temperature。
璽ユ a)State
´
ali spectroscopに prosses Of mOleculepWth a diagram.
b)lfthe rOtational attd distortion constants are 10.6cm‐
respectively of lH35ci then calculate′
l and 5.3幸 10‐ 4 cm‐ 1
1)the Wavenumber OfJ=4 rotationallevel。
2)the
wavenumber of absorption hne starting frOm』 =6.
Usefull constants:‐
C=3X1010 cm/s
h=6.62X10‐ 34J.s
e〓
1.6X10‐ 19C
k=1.38X10‐ 23J/k
mu=1.67X1027Kg
lJB=9。
27X10‐ 24J/T
R=1.0967X105 cnl‐
1
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University of TechnologY
Department of APPlied
置瑞蹴識嵩糀
:獣 背:renCe葦
:離 よ
Examiner: Dr. Mojahid M. Najim
Classi 4th year
丁ime i 3hours
Date i夕 6/2016
Answer four equations onlY
Ql
a-
:
Defined the following (five only):
l-Metallicbonding,2-P-Njunction(Diode),3-Intrinsicsemiconductor,
4- energy level exfand J- saturation Magnetization 6- domains?
(10 mark)
b-what are the properties of metals
(7 5 mark)
?
Q2:
density for nickel,
a- calculate (a) the saturation magnetization and (b) the saturation flux
(7'5 mark)
which has u i..,tity of 8.90 !ci3 t (Am =58'71 g/mot and nc=0'60 Bohr magneton$
in Maxwellb - Explain briefly about the effect of the cataiyst energy on rate of reaction
Boltzmann distribution
?
(10 mark)
Q3:
field
a- Draw the Scheme of the critical temperature ,current density and magnetic
?
(7.5 mark)
boundary separating superconducting and normal conducting states
?
b- compare, band structure for n-type and p- type semiconductors (Draw)
(10 mark)
Q4:
a- Draw
the periodic potential Scheme of many atomic system(a solid)
b- Derive the polarization @) from energy stored (Q) for Capacitor
?
?
(7.5 mark)
(10 mark)
Q5:
unit
a- Calculate the saturation magnetization forFe:Ol given that each cubic
nm ?
celicontains 8Fe2* and 16 Fe31 ions, and that the unit cell edge length is 0.839
(7'5 mark)
ioorr
roo..agnetons)
?
(Draw)
b- what are the relations between energy bands and fermi level in materials
?
(10 mark)
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University of Technology
Department of Applied Sciences
B/an c;r Jf llalerial Sclence
i ':>-,.-
L.:ss:,
Final Examination
Snbject: Ccnstruction )laterials
Examiner: .\ssist. Lect. Rami Joseph
.:i"1:
Tirne : i hours
Date
L:,.,!.1'6,/
20't 5 -201 6
:
,,\
Note: (Choose only 4 questions).
=[20 Marks]
Ql/A,Define the flou,ing terms: (Choose 5)
1.
Concrete.
2.
Briule Materials.
3.
Metal.
4.
Yield point.
5.
Rod B (Vicat Needle).
6.
Portland pozzolanic materials
Q1/B/Effect adding rounded aggregate to concrete mix?
Q2l A/ What is the shotcrete concrete? And explain one of mixing method? with drawing
one of
method?
[10
Q2/B/ What are advantages of adding low water/cement ratio to concrete
Ma*s]
mix?
[10 Marks]
Q3/A/ Calculate the specific gravity of brick, if you know the density (1700 KC/m) and the density of
warer i000 Kg/m'r
?
Q3/ B/Aaswer the following: (Choose
)
2)
[10 Marks]
1.
Comparison between Alite and Bilte?
2.
Draw the relation between stress-strain curve?
3.
Fineness modulus?
Q4/ A,/What is admixtures (Superplasticizer)? And what are the
Q4/B/ Answer the
1
.
2.
[10 Marks]
advantages?
following:
[10 Marks]
[10 Marks]
6-
Draw the development of strength of pure compounds of cement?
What are the types of concrete? And explain one of them?
QS/A,/What are the kinds of steel and write in table the percentage of carbon of these kinds?
QS/BAVhat are the classifications of aggregate? Explain one of them?
G00D LUCK
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[
1
0 Marks]
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of Techno10gy
Departm?nt of Applied Sciences
Final Eiaminatiom 2015/2016
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Time
Branch : Material Science
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Universif.v of Technology
Department of Applied Sciences
First Examination 2015 12016
Under graduate Studies
,7-)- "-'
Class: 4'h
Subject: biomaterial
Branch: material
Examiner: Dr.Sadeer !I.maj eed
Time:3 hr
Date:'3\ /
5l Zurl
Note ansrver four (4) question only
Q1/A/ Fill in the blank the suitable words:
(Each question has 17.5 marks)
1- The Young's modulus, E, of the Voigt composite is given by...
2- Titanium is getting attention in medical because of..........and
3- Polypropylene is widely used in ...
4-The formula (called 4555), which signifies. .........as the net work
former, and
.
5- Bioactive Fixation is
.
6- Dental amalgam is .. ..
7-ln vitro is ...
8- Types
of total joint replacements like ankle is
...
...... and like wrist
is
Bi Mentation three categories of mechanical and performance requirement, and
explain one of them?
teeth?
Q2 / what are the comparisons of iesin and porcelain
e3/A/ Explain the state that occurs on film growth at room temperature on pure
titanium?
B/ which factor result in decreasing rate of bio degradation?
Q4l
N what about calcium phosphate ceramic, explain
it?
B/ state how can selection of biomedical materials?
Q5/ A/ refer to the complication in development of restorable bio ceramic?
B/ state the relative percentage of mass for typical cortical bone?
G00D LUCK
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UniversitY of TechnologY
Department of APPlied Sciences
Branch of Material Science
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ノ
Class : 4th Yeai
Time : 3 hours
Final ExanlinatiOn
Branch:｀laterial SCiCnCe
2013‐ 2016
r
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Date:
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UniversitY of TechnologY
Department of APPlied Sciences
Branch of Material Science
Science
Subject: Isolated Materials
Final Examination
Branch: \lateriai
o'ts'2o'|5
Examiner:Dr.Ⅳ lofeed Abdul‐ Latecf
Class : -lth ,vear
Time : 3 hours
Date : \Zi6 /Z- i
oljt" 'ru (A) 05
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University ol Technology
Department of APPlied Sciences
Branch of Materials Science
Final Exam
Branch: l!lareriais Science
Subject: ComPosite Materiais
Examiner: Dr. Awham M H'
Note: answer
Qr:
@
&,^t
Class: -l'n ciass
Time :3 hour
Dat-e '.11i5 12016
questions only' (25 marks for each question)
(a) Define the following:
3-Whiskers'
1- Laminar Composites. 2- C-C matrix composite'
4- Delamination Process, 5- PlY
manufactured?
(b) Explain one method of how (MMCs) are
the following:
Q2' Give the reasons of
different load carrying structures'
1- Laminate composites are widely used in
must be strong enough'
The interface between the matrix and reinforcement
Althoughepoxyiscostlierthanotherpolymermatrices,itisthemostpopularmatrixofPM
circular'
The most common shape of fibers is
fibers'
There are some drawbacks of the aramid
Ql:(a)Find&etransverseelasticmodulusofaunidirectionalglass/epoxylaminawitha
E'n: 3'4GPa'
30% fiber volume fraction, Er: 85GPa
'
and intraply hybrid composites?
(b) Distinguish between interply hybrid laminates
Q+: (a) ComPlete the following:
tests
l-There are fvvo popular interface characterization
' ' "" ' ' ' '
depends on three properties
2-The resistance towards laminate buckling
,
...........,.....
i....
r r. r.....
r.
r. i..rr.
3-Theexistenceofapositiveornegativehybridfiberseffectisdeterminedby
4- The drawbacks of (MMCs) over (PMCs) include
5- The typical applications of (CMCs) include' ' " " "
'
(b) Are composite materials isotropic and/or homogenous?
types of fibers composite hybrids' explain two only?
Qs: (a) What are the general
of the polymer composites?
g.. (b) Classify the types of matrix and reinforcement
G00D LUCK