Date post: | 02-Jun-2018 |
Category: |
Documents |
Upload: | ganeshblogs |
View: | 218 times |
Download: | 0 times |
of 23
8/10/2019 University Model Question for Engineering Graphics
1/23
USNP08AU45
PESCollege of Engineering, Mandya-571401(An Autonomous Institution Under VTU, Belgaum)
Fourth Semester B.E, Automobile Engineering Degree Examination, une !"#"COMPUTER A !E! MAC" NE !RA# N$
Model %&e'(ion Pa)erTi*e+ r' Ma./ Mar '+ 100
No(e+ #. Ans$er an% one &uestion 'rom ea h o' the arts A, B, *.!. Use FI+ST A - E ro/e tion onl%.0. 1issing data, i' an%, ma% be suitabl% assumed.2. All the al ulation should be on ans$er sheet su lied.3. All the dimensions are in mm.4. Dra$ing instruments ma% or ma% not be used 'or s5et hing.
PART A
#. A %linder 4"mm diameter and 6"mm long stands $ith its ir ular base on 78. A se tion lane er endi ular to V8 and in lined at 4" degree to 78 uts the axis at a oint !6mm belo$ its toend. Dra$ se tional to and right 9ie$s and true sha e o' the se tion. 230 Mar '
!. Figure #. Sho$s a ma hine om onent. Dra$ the 'ollo$ing 9ie$s:a) Front 9ie$
b) To 9ie$) Side 9ie$ 230 Mar '
PART
0. Dra$ the 'ollo$ing 9ie$s o' a S;*
8/10/2019 University Model Question for Engineering Graphics
2/23
8/10/2019 University Model Question for Engineering Graphics
3/23
8/10/2019 University Model Question for Engineering Graphics
4/23
ig&re+
8/10/2019 University Model Question for Engineering Graphics
5/23
USNP08AU43
P E S College Of Engineering, Mandya2An A&(ono*o&' n'(i(&(ion &nder = T U, elga&*
o&r( Se*e'(er /E/ A&(o*o:ile Engineering !egree E.a*ina(ion, @&ne 3010Ma(erial S
8/10/2019 University Model Question for Engineering Graphics
6/23
Automobile EngineeringFourth Semester B.E. Degree Examination, ul% !"#"
1odel Huestion 8a er7eat Trans'er ( 8"6AU24)
Ti*e + "r' Ma./ Mar ' + 100
No(e+#. Ans$er an% FIVE 'ull &uestions.!. All &uestions arr% e&ual mar5s.0. Assume suitable data $here9er ne essar%.2. Use ' heat trans'er data boo5 is ermitted.
PART A
#. (a) Ex lain the di''erent modes o' heat trans'er. 28 Mar '
(b) Deri9e the general heat ondu tion e&uation in %lindri al oordinates. 213 Mar '
!. (a) Ex lain: i) Thermal ondu ti9it% ii) Thermal di''usi9it% 24 Mar '
(b) Deri9e ex ression 'or radial heat trans'er and tem erature distribution along the radius o' a hollo$%linder $hose inside and outside sur'a es are maintained at stead% state tem erature Tl and T!res e ti9el% and onstant thermal ondu ti9it%.Also obtain ex ression 'or o9erall heat trans'er o e''i ient based on inner radius. 210 Mar '
( ) Deri9e an ex ression 'or riti al thi 5ness o' insulation o' a %linder and ex lain the signi'i an e o'riti al thi 5ness o' insulation. 26 Mar '
0. (a) Deri9e an ex ression 'or tem erature distribution and heat 'lo$ in a 'in o' 'inite length $ith anadiabati end. 28 Mar '
(b) An ele troni semi ondu tor de9i e generates 06 x #" 05 al hr o' heat. To 5ee the sur'a etem erature at the u er sa'e limit o' 3 ", it is desired that the generated heat should be dissi ated to thesurrounding en9ironment $hi h is at 0" ". The tas5 is a om lished b% atta hing aluminium 'ins ".3mm!s&uare and #"mm to the sur'a e. ?or5out the numbers o' 'ins i' thermal ondu ti9it% o' 'in material is#435 al m n;< and the heat trans'er o e''i ient is #". 35 al m!no5.
egle t the heat loss 'rom the ti o' the 'in. 213*ar '
2. (a) $hat are biot and Fourier numbersC Ex lain their h%si al signi'i an e. 28*ar '
(b) Aluminium s here o' mass 3.3 5g and initiall% at a tem erature o' !=" "* is suddenl% immersed ina 'luid at #3 " *. The on9e ti9e heat trans'er o e''i ient is 36$ m!
8/10/2019 University Model Question for Engineering Graphics
7/23
4. a) ?hat is the signi'i an e o' the 'ollo$ing dimensionless numbersCi) +e%nolds iii) usseltii) 8randtl i9) -rasho''. 210*ar '
b) *onsidering the bod% o' a mass as a %linder o' 0" m diameter and #4" m height. I' thetem erature o' the bod% is to be maintained at 04.3 *, 'ind out the amount o' heat generated in the bod%o' a mass er hour. Tem erature o' surrounding is #0.3" *.
210*ar '
. (a) ;btain an ex ression 'or the mean tem erature di''eren e 'or a ounter 'lo$ heat ex hanger. 28 Mar '
(b) An e onomiGer is to be ur hased 'or a o$er lant. The unit is to be large enough to heat.35g s o' $ater 'rom # to #6! *. There are !45g s o' 'lue gases (* J #."5 5g.5) a9ailable at 2!4 *.Estimate#) The outlet tem erature o' the 'lue gases.!) The heat trans'er area re&uired 'or a ounter 'lo$ arrangement i' the o9erall heat trans'er oe''i ient is3 ? m! o< 213 Mar '
6. (a) State and ro9e
8/10/2019 University Model Question for Engineering Graphics
8/23
S&:/ Code+ P08AU4
P/E/S/ College of Engineering, Mandya2An A&(ono*o&' n'(i(&(ion &nder =TU, elga&*
A&(o*o:ile Engineeringo&r( Se*e'(er /E/ !egree E.a*ina(ion, @&ly 3010
Model %&e'(ion Pa)erMan&fa
8/10/2019 University Model Question for Engineering Graphics
9/23
:/ A sha er is o erated at #!" utting stro5es er min and is used to ma hining a$or5 ie e o' !3" mm length and #!" mm $idth. Feed is ".4 mm stro5e and thede th o' ut is 4 mm a a roa h and o9er tra9el distan es are !3 mm ea h.*al ulate the total ma hining time. 205 Mar '
8/10/2019 University Model Question for Engineering Graphics
10/23
P/E/S/ College of Engineering, Mandya2An A&(ono*o&' n'(i(&(ion Under =TU, elga&*
A&(o*o:ile Engineeringo&r( Se*e'(er /E/ !egree E.a*ina(ion, @&ly 3010
Model %&e'(ion Pa)erT eory of Ma< ine' 2 P08AU44
Ti*e + "r' Ma./ Mar ' + 100
No(e + An';er any FIVE f&ll 9&e'(ion' 'ele
8/10/2019 University Model Question for Engineering Graphics
11/23
PART-
5/ a/ The thi 5ness o' an in9olute gear tooth is 2.=6 mm at a radius o' 3".6 mm and a ressure angle o'!" . *al ulate the tooth thi 5ness on the base ir le. 205 Mar '
:/ The 'ollo$ing data re'er to the t$o mating in9olute gears o' !" ressure angle: umber o' teethon inion is 0", gear ratio is !, module is #! mm and the s eed o' the inion is 4"" r m.The line o' onta t on ea h side o' the it h is hal' the maximum ossible length. Find the heighto' addendum 'or ea h gear $heel and the length o' ar o' onta t. Also 'ind the maximum 9elo it%o' sliding during a roa h and re ess. 215 Mar '
6/ a/ S5et h and des ribe a be9el gear di''erential used in automobiles. 206 Mar ':/ A 'ixed annular gear A and a smaller on entri rotating gear B are onne ted b% a om ound gear
*D. The gear * meshes $ith gear A and D $ith B. The om ound gears re9ol9ed in a in on thearm +, $hi h re9ol9es about the axis o' A and B. The number o' teeth on gears A, B and D are
#3", 2" and #"" res e ti9el%. Determine the number o' teeth on gear *, i' the gears A and * ha9et$i e the module o' gears B and D. 7o$ man% re9olutions $ill B ma5e 'or one om letere9olution o' the arm +C 214 Mar '
7/ a/ Deri9e the ondition 'or maximum o$er to be transmitted b% a 'lat belt dri9e and hen e obtain theex ression 'or the orres onding maximum 9elo it% o' the belt. 206 Mar '
:/ A ro e dri9e is re&uired to transmit !0"5? 'rom a ulle% o' one metre diameter running at 23"+81. The sa'e ull in ea h ro e is 6"" and the mass o' the ro e is ".24 5g er metre length. Theangle o' la and the groo9e angles are #4" and 23 res e ti9el%. I' the oe''i ient o' 'ri tion
bet$een the ro e and ulle% sur'a e is ".0, al ulate the number o' ro es re&uired. 214 Mar '
8/ A am $ith a base ir le radius o' 03 mm is rotating at a uni'orm s eed o' #"" r m in antilo 5$ise dire tion. Dra$ the ro'ile 'or the dis am $ith re i ro ating 5ni'e edge 'ollo$er onthe enter line o' the am sha't 'or the 'ollo$ing 'ollo$er motion.
a/ Follo$er to mo9e u $ard 0" mm $ith sim le harmoni motion in ".# se .:/ Follo$er to d$ell in next ".#3 se .
8/10/2019 University Model Question for Engineering Graphics
12/23
8/10/2019 University Model Question for Engineering Graphics
13/23
inside diameter o' mild steel to be used, assuming a sa'e shear stress o' 33x#" 0
< a 'or the mild steel. 206 Mar ' . S5et h and brie'l% rear axle dri9es.
208 Mar '
PART-3. a. Ex lain $ith a neat s5et h the $or5ing o' a neumati bra5e used in
automobiles. ?hat are its merits and demerits om ared to h%drauli bra5esC 211 Mar ' b. A motor ar has a $heel base o' !.42m the height o' its entre o' gra9it%abo9e the ground is ".4#m and it is #.#!m in 'ront o' the rear axle. I' thear is tra9eling at 2"5m hr on a le9el tra 5, determine the maximumdistan e in $hi h the ar ma% be sto ed, $heni) the rear $heels are bra5edii) the 'ront $heels are bra5ed
iii) all $heels are bra5edThe oe''i ient o' 'ri tion bet$een the t%re and the road ma% be ta5en as".4. 20B Mar '4. a. ?hat are the ad9antages o' inde endent sus ension o9er rigid axle
sus ension s%stemC204 Mar '
b. Ex lain onstru tion on $or5ing o' h%drauli sho 5 absorber206 Mar '
. A t% i al oil sus ension s ring has #" e''e ti9e oil o' a meandiameter #!3mm and made out o' $ires o' #3mm diameter. The s ring iddesigned to arr%, a maximum stati load o' 030#.4 . al ulate shearstress and de'le tion under these load onditions. I' maximum shear stresso' 40 43"< m ! is allo$able in the material, $hat is the ossiblelearan e in the s ringC Ta5e 9alue o' -J 03 3x#" 0 5 a.
210 Mar '. a. Ex lain an% t$o t% es o' $heels used in automobiles. 206 Mar '
b. ?rite ad9antages o' radial l% t%res o9er ross l% t%res. 204 Mar '
. Ex lain di''erent tests to be arried out on 9ehi le hassis 'rame. 210 Mar '
6. S5et h and ex lain the 'ollo$ing hassis om onents used in re ent9ehi les $ith ad9an ed te hnologies.
i) Steering s%stemsii) Bra5esiii) Sus ensioni9) ?heels
25.4F30 Mar '
8/10/2019 University Model Question for Engineering Graphics
14/23
Uni er'i(y 'ea( n&*:er 2USN
P/ E/ S CO E$E O EN$ NEER N$, MAN!DA-571401/
2An A&(ono*o&' in'(i(&(ion &nder = T U, elga&*
MO!E %UEST ON PAPER
S >T" SEMESTER / E/ SEE - OR T"E ACA!EM C DEAR+ 3010-11
Co&r'e ;i(
8/10/2019 University Model Question for Engineering Graphics
15/23
) Assuming all $heels are to be bra5ed, $hat $ill be the angle o' the slo e so
that the 9ehi le $ill begin to slide i' the oe''i ient o' adhesion bet$een the
t%re and ground is ".03 C (#! 1ar5s)
!) a) Dis uss the 9arious 'a tors a''e ting tor&ue transmission in a lut h
(2 1ar5s)
b) ?ith s5et h ex lain the onstru tion and $or5ing o' a single late lut h
( 6 1ar5s )
) Deri9e an ex ression 'or e' 'e ti9e mean radius and tor&ue transmitted in ase
o' a one lut h
( 6
1ar5s )
0) a) Determine the siGe o' the lut h late suitable 'or a 9ehi le em lo%ing a single
late t% e o' 'ri tion lut h and de9elo ing 0 .3
8/10/2019 University Model Question for Engineering Graphics
16/23
s
)
b) ?ith s5et h ex lain an% one o' the method used to in rease the higher
e''i ien % range o' a tor&ue on9erter
(
#
"
1
a
r
5
s)
8A+T O B
3) a) Ex lain the onstru tion and $or5ing o' a onstant mesh gear box. 7ighlight the
ad9antages and disad9antages o9er the sliding mesh gear box
(#" 1ar5s )
b) A 'our s eed gear box is to be onstru ted 'or ro9iding the ratios o' #.", #.24, !.!6
and 0.=0 to # as nearl% as ossible. The diametral it h o' ea h gear is 0.!3 mm and the
smallest inion is to ha9e at least #3 teeth.Determine the suitable number o' teeth o' the di''erent gears. ?hat is then the distan e
bet$een the main and la% sha't C
( #" 1ar5s )
4) a) S5et h and ex lain the rin i le o' e i % li gearing. 1ention its ad9antages.
( #" 1ar5s) b) S5et h and ex lain the $or5ing o' a ?ilson lanetar% gearbox
( #"1ar5s )
) a) ?hat is automati transmission C Ex lain $ith the aid o' la%out the Borg $arners
automati transmission.
(#"1ar5s )
8/10/2019 University Model Question for Engineering Graphics
17/23
b) ?ith la%out ex lain the ele tri transmission s%stem and its limitations.
(#" 1ar5s )
6.) ?rite short notes on an% 'our o' the 'ollo$ing.
a) Ad9an ed transmission used in re ent 9ehi le
b) Double de lut hing
) Trans'er box
d) ;9er dri9es
e) 8hase and stage in tor&ue on9erter
3 1ar5s ea h
Uni er'i(y 'ea( n&*:er 2USN
P/ E/ S CO E$E O EN$ NEER N$, MAN!DA-571401/
2An A&(ono*o&' in'(i(&(ion &nder = T U, elga&*
MO!E %UEST ON PAPER
S >T" SEMESTER / E/ SEE - OR T"E ACA!EM C DEAR+ 3010-11
Co&r'e ;i(
8/10/2019 University Model Question for Engineering Graphics
18/23
No(e+ 1 An';er any fi e f&ll 9&e'(ion' < oo'ing a( lea'( (;o 9&e'(ion' fro*
ea< )ar(/ 3 U'e of da(a and :oo i' )er*i((ed Mi''ing or ;rongly
)rin(ed da(a, if any, *ay :e a''&*ed '&i(a:ly and '(a(ed
8/10/2019 University Model Question for Engineering Graphics
19/23
i) a lut h and bra5eii) a sim le and a di''erential band bra5e
24 Mar '
b) In a dis lut h the axial 'or e is 23"" . The inner radius o' onta t is 3"mm and theoutside radius is #""mm. Assuming uni'orm $ear, determine i) maximum ressure ii)minimum ressure iii) a9erage ressure and i9) dra$ ressure distribution.
26 Mar '
) A di''erential band bra5e is o erated b% a le9er length 3""mm. The bra5e drum has adiameter o' 3""mm and the maximum tor&ue on the drum is #""" 1. The band bra5eembra es ! 0 rd o' the ir um'eren e. ;ne end o' the band is atta hed to a in 6"mm 'romthe 'ul rum and on the side o' the 'or e a ting and the other end is atta hed to in #""mmon the other side o' the 'ul rum. I' the band bra5e is lined $ith asbestos 'abri ha9ing aoe''i ient o' 'ri tion ".0, 'ind the least o erating 'or e re&uired.
210 Mar 'Par(-
3. a) Ex lain the lassi'i ation o' gears and their a li ations.26 Mar '
b) A re i ro ating om ressor is to be onne ted to an ele tri motor $ith the hel o's ur gears. The distan e bet$een the sha'ts is to be 3""mm. the s eed o' the ele trimotor is ="" r. .m. and the s eed o' the om ressor sha't is desired to be !"" r. .m. Thetor&ue to be transmitted is 3""" m. Ta5ing starting tor&ue as !3 more than thenormal tor&ue, determine i) 1odule and 'a e $idth o' the gears using !" degrees stubteeth, and ii) umber i' teeth and it h ir le diameter o' ea h gear. Assume suitable9alues o' 9elo it% 'a tor and e$ise 'a tor.
214 Mar '
4. A air o' are'ull% ut heli al gears 'or a turbine has a transmission ration o' #" . Theteeth are !" " stub in9olute in the normal lane. 8inion has !3 teeth and rotates at 3"""r m. 1aterial 'or inion and gear is ".2 arbon steel untreated $ith allo$able statistress o' 4=.44 18a. 7elix angleJ0" " . 8o$er transmitted J =" 5?. Ser9i e 'a tor J #.!3.?ear and lubri ation 'a tor J #.!3. Determine the module in normal lane and 'a e $idtho' the gears. Suggesdt suitable sur'a e hardness 'or the gear air.
230 Mar '
.a) Ex lain the thermal rating on $arm gear.26 Mar '
b) A air o' ast iron Be9el gears onne ted t$o sha'ts at right angles. The it h
diameters o' the inion and gears are 6"mm and #"" mm res e ti9el%. The tooth ro'ileo' the gears are o' #2 om osite 'orm. The allo$able stati stress 'or both the gears is33 mm ! . I' the inion transmits !. 3
8/10/2019 University Model Question for Engineering Graphics
20/23
6. a) Ex lain the 'ollo$ing: i) Bearing hara teristi s number
ii) Bearing modules
b) A 'ull /ournal bearing o' 4"mm diameter and #!"mm long has a bearing ressure o'#"3 mm ! . The s eed o' the /ournal is ="" r m and the ratio o' /ournal diameter to thediametral learan e is #""". The bearing is lubri ated $ith oil $hose absolute 9is osit% atthe o erating tem erature is 03 "*., Find i) the amount o' arti'i ial ooling re&uired and ii)the mass o' the lubri ating oil re&uired, i' the di''eren e bet$een the outlet and inlettem erature is #" "*.Ta5e s e i'i heat o' oil as #63"
8/10/2019 University Model Question for Engineering Graphics
21/23
8/10/2019 University Model Question for Engineering Graphics
22/23
MODEL QUESTION PAPER
UN =ERS TD SEAT NUM ER 2USN
P/E/S/CO E$E O EN$ NEER N$, MAN!DA-571401 .
(An Autonomous Institution under VTU, Belgaum)Si.( Se*e'(er /E/ !egree E.a*ina(ion, @&ne-3011Co&r'e ;i( Code+-S&rfa
8/10/2019 University Model Question for Engineering Graphics
23/23