University Model Question for Engineering Graphics

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;*


2/23


3/23


4/23

ig&re+


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


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!


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


8/23

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


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 '


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


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 .


12/23


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 '


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(


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


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 )


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(


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


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


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"


21/23


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


23/23

University Model Question for Engineering Graphics

Documents

Transcript of University Model Question for Engineering Graphics