CBSE Class 12 Auto Engineering Question Paper 2020

H$moS> Z§.
Code No. 107
amob Z§. narjmWu H$moS >H$mo CÎma-nwpñVH$m Ho$ _wI-n¥ð
Roll No. >na Adí` {bIo§ &
Candidates must write the Code on the
title page of the answer-book.

ZmoQ> NOTE
(I) H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _o§ _w{ÐV (I) Please check that this question
n¥ð> 11 h¢ & paper contains 11 printed pages.

(II) àíZ-nÌ _| Xm{hZo hmW H$s Amoa {XE JE H$moS (II) Code number given on the right
>Zå~a H$mo N>mÌ CÎma-nwpñVH$m Ho$ _wI-n¥ð> na hand side of the question paper
{bI| & should be written on the title page of
the answer-book by the candidate.
(III) H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _| (III) Please check that this question
>31 àíZ h¢ & paper contains 31 questions.

(IV) H¥$n`m àíZ H$m CÎma {bIZm ewê$ H$aZo go (IV) Please write down the Serial
nhbo, CÎma-nwpñVH$m _| àíZ H$m H«$_m§H$ Number of the question in the
Adí` {bI| & answer-book before attempting it.
(V) Bg àíZ-nÌ H$mo n‹T>Zo Ho$ {bE 15 {_ZQ >H$m (V) 15 minute time has been allotted to
g_` {X`m J`m h¡ & àíZ-nÌ H$m {dVaU read this question paper. The
nydm©• _| 10.15 ~Oo {H$`m OmEJm & question paper will be distributed
10.15 ~Oo go 10.30 ~Oo VH$ N>mÌ Ho$db at 10.15 a.m. From 10.15 a.m. to
10.30 a.m., the students will read the
àíZ-nÌ H$mo n‹T>|Jo Am¡a Bg Ad{Y Ho$ Xm¡amZ question paper only and will not
do CÎma-nwpñVH$m na H$moB© CÎma Zht {bI|Jo & write any answer on the
answer-book during this period.

_moQ>a A{^`m§{ÌH$s (g¡ÕmpÝVH$)
AUTO ENGINEERING (Theory)

{ZYm©[aV g_` : 2 1 KÊQ>o A{YH$V_ A§H$ : 50
2
1
Time allowed : 2 hours Maximum Marks : 50
2

.107 1 P.T.O.

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IÊS> H$
(i) Bg àíZ-nÌ _| 31 àíZ h¢, {OZ_| go Aä`Wu H$mo Ho$db 23 àíZ H$aZo H$s µOê$aV h¡ &
(ii) àíZ g§»`m 1 go 12 VH$ ~hþ{dH$ënr` àíZ h¢, àË`oH$ 1 A§H$ H$m h¡ & BZ_| go
{H$Ýht 10 àíZm| Ho$ CÎma Xr{OE &
(iii) àíZ g§»`m 13 go 19 VH$ A{V bKw CÎmar` àíZ h¢, àË`oH$ 2 A§H$ Ho$ h¢ & BZ_| go
{H$Ýht 5 àíZm| Ho$ CÎma Xr{OE &
(iv) àíZ g§»`m 20 go 26 VH$ bKw CÎmar` àíZ h¢, àË`oH$ 3 A§H$ Ho$ h¢ & BZ_| go
{H$Ýht 5 àíZm| Ho$ CÎma Xr{OE &
IÊS> I
(v) àíZ g§»`m 27 go 31 VH$ XrK© CÎmar` àíZ h¢, àË`oH$ 5 A§H$ Ho$ h¢ & BZ_| go
{H$Ýht 3 àíZm| Ho$ CÎma Xr{OE &
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~hþ{dH$ënr` àíZ : 1 A§H$ (àË`oH$) Ho$ 12 àíZ {XE JE h¢ & {H$Ýht 10 àíZm| Ho$ CÎma Xr{OE &
110=10
1. ‘‘bw{~«Ho$qQ>J Am°`b’’ H$s Amdí`H$Vm hmoVr h¡, B§OZ Ho$ Mb ^mJm| _| 1
(A) Kf©U H$_ H$aZo Ho$ {bE
(B) {Kgmd H$_ H$aZo Ho$ {bE
(C) {Kgmd A{YH$ H$aZo Ho$ {bE
(D) Cn`w©º$ _| go H$moB© Zht
2. ‘‘Am°`b {\$ë_’’ _| Am°`b H$s naVm| (gVhm|) Ho$ _Ü` _| K{Q>V hmoZo dmbo ‘‘Kf©U’’ H$mo H$hVo
h¢ 1
(A) Jm‹T>m (í`mZ) Kf©U
(B) R>mog Kf©U
(C) gr{_V Kf©U >
(D) {MH$Zm Kf©U
.107 2

General Instructions :
Read the following instructions very carefully and strictly follow them :

SECTION A

(i) This question paper contains 31 questions, out of which the candidate
needs to attempt only 23 questions.

(ii) Questions no. 1 to 12 are Multiple Choice Questions (MCQs) carrying
1 mark each. Attempt any 10 out of these.

(iii) Questions no. 13 to 19 are Very Short Answer Type questions carrying
2 marks each. Attempt any 5 out of these.

(iv) Questions no. 20 to 26 are Short Answer Type questions carrying 3 marks
each. Attempt any 5 out of these.

SECTION B
(v) Questions no. 27 to 31 are Long Answer Type questions carrying 5 marks each.
Attempt any 3 out of these.

SECTION A
Multiple Choice Questions : There are 12 questions of 1 mark each. Answer
any 10 questions. 110=10

1. The requirement of ‘‘lubricating oil’’ for the movable parts in an engine is 1
(A) to reduce friction
(B) to reduce wear
(C) to increase wear
(D) None of the above

2. The ‘‘friction’’ that occurs between the layers of oil in an ‘‘oil film’’ is
called 1
(A) Viscous Friction
(B) Solid Friction
(C) Boundary Friction
(D) Greasy Friction

.107 3 P.T.O.

3. B§OZ Hy$qbJ H$aZo Ho$ ~mX, ‘‘Hy$b¢Q>’’ Mbm OmVm h¡ 1

(A) nån BZb¡Q> _|
(B) h¡S>a Q>¢H$> _|
(C) H$boŠQ>a Q>¢H$ _|
(D) Cn`w©º$ _| go H$moB© Zht
4. ‘‘W_m}ñQ>¡Q> dmëd’’ IwbZm ewê$ hmoVm h¡, bJ^J 1

(A) 90C Vmn_mZ na >

(B) 80C Vmn_mZ na

(C) 50C Vmn_mZ na

(D) 20C Vmn_mZ na

5. ‘‘àmonoba emµâQ>’’ H$m _Ü` ^mJ ~Zm hmoVm h¡ 1

(A) ñQ>rb emµâQ H$m
(B) JZ_¡Q>b emµâQ H$m
(C) ñQ>rb Q>çy~ H$m
(D) H$mñQ> Am`aZ am°S> (N>‹S>) H$m
6. H$ma H$s ‘‘_¡Ý`wAb ñQ>r`[a¨J>’’ Ho$ {bE ‘‘ñQ>r`[a¨J AZwnmV>’’ bJ^J hmoVm h¡ 1
(A) 5 : 1>

(B) 15 : 1

(C) 50 : 1

(D) 100 : 1>

7. ‘‘em{_b H$moU (g§`wº$ H$moU)’’ Omo‹S> (`moJ\$b) hmoVm h¡ 1

(A) H¡$å~a VWm H¡$ñQ>a H$m
(B) H¡$ñQ>a VWm Eg.E.AmB©. (ñQ>r`[a¨J EpŠgg BZŠbrZoeZ) H$m
(C) H¡$å~a VWm Eg.E.AmB©. H$m
(D) H¡$å~a VWm Q>mo-BZ H$m
.107 4

3. After engine cooling, the ‘‘coolant’’ goes into the 1

(A) Pump Inlet

(B) Header Tank

(C) Collector Tank

(D) None of the above

4. ‘‘Thermostat valve’’ starts to open at about 1

(A) 90C temperature

(B) 80C temperature

(C) 50C temperature

(D) 20C temperature

5. The central portion of a ‘‘Propeller shaft’’ is made from 1

(A) Steel Shaft

(B) Gunmetal Shaft

(C) Steel Tube

(D) Cast Iron Rod

6. The ‘‘Steering Ratio’’ for ‘‘Manual steering’’ of a car is approximately 1

(A) 5:1

(B) 15 : 1

(C) 50 : 1

(D) 100 : 1

7. The ‘‘Included angle (combined angle)’’ is the sum of the 1

(A) Camber and Castor
(B) Castor and SAI (Steering Axis Inclination)

(C) Camber and SAI

(D) Camber and Toe-in

.107 5 P.T.O.

8. ‘‘Q>m°agZ ~ma’’ H$m Xÿgam Zm_ h¡ 1
(A) ñQ>¡{~bmBµOa ~ma
(B) ñQ´>Q> am°S>
(C) n¡ZhmS>© am°S>
(D) ao{S>`g am°S>
9. ‘‘ñQ>m{Q>ªJ _moQ>a’’ VWm ‘‘âbmB©ìhrb’’ Ho$ _Ü` (~rM) _| ‘‘{J`a [aS>ŠeZ’’ bJ^J hmoVm h¡ 1
(A) 5 : 1>
(B) 10 : 1
(C) 15 : 1
(D) 50 : 1>

10. ‘‘boS> E{gS>’’ ~¡Q>ar H$s ‘‘YZmË_H$ ßboQ>’’ H$m a§J hmoVm h¡ 1
(A) ^yam
(B) Yyga$
(C) g\o$X
(D) H$mbm
11. _moQ>a Jm{‹S>`m| Ho$ S´>mBdam| H$m ‘‘bmBg|qgJ’’ _moQ>a ìhrH$b EŠQ> Ho$ {H$g AÜ`m` g§»`m _|
S>rb {H$`m OmVm h¡ ? 1
(A) AÜ`m` II >
(B) AÜ`m` IV
(C) AÜ`m` V
(D) AÜ`m` VII
12. ‘‘_moQ>a ìhrH$b EŠQ>’’ _| ‘‘AÜ`m`m|’’ H$s g§»`m h¡ 1
(A) XIV
(B) XI
(C) XV
(D) XIII
.107 6

8. Another name of ‘‘Torsion bar’’ is 1
(A) Stabilizer Bar
(B) Strut Rod
(C) Panhard Rod
(D) Radius Rod

9. ‘‘Gear reduction’’ between the ‘‘Starting motor’’ and the ‘‘Flywheel’’ is
about 1
(A) 5:1
(B) 10 : 1
(C) 15 : 1
(D) 50 : 1

10. The colour of ‘‘Positive Plate’’ of a ‘‘Lead Acid’’ battery is 1
(A) Brown
(B) Grey
(C) White
(D) Black

11. The ‘‘Licensing’’ of drivers of motor vehicles is dealt in which chapter
number of the Motor Vehicles Act ? 1
(A) Chapter II
(B) Chapter IV
(C) Chapter V
(D) Chapter VII

12. The numbers of ‘‘chapters’’ in the ‘‘Motor Vehicles Act’’ is 1
(A) XIV
(B) XI
(C) XV
(D) XIII
.107 7 P.T.O.

A{V bKw CÎmar` àíZ : 2 A§H$ (àË`oH$) Ho$ 7 àíZ {XE JE h¢ & {H$Ýht 5 àíZm| Ho$ CÎma Xr{OE &
25=10

13. ‘‘Am°`b {S>ñn¡Ýga’’ H$m Š`m H$m`© hmoVm h¡ ? 2

14. ‘‘bw~«rHo$eZ’’ H$mo n[a^m{fV H$s{OE & 2

15. ‘‘`y{Zdg©b Ádm°BÝQ>’’ H$m Š`m H$m`© hmoVm h¡ ? 2

16. ‘‘H¡$å~a’’ H$s n[a^mfm Xr{OE & 2

17. ‘‘\«o$_’’ {H$VZo àH$ma Ho$ hmoVo h¢ ? 2

18. ‘‘~¡Q>ar’’ {H$VZo àH$ma H$s hmoVr h¢ ? 2

19. ‘‘`mVm`mV {Z`§ÌU’’ {Z`_m| H$mo g§jon _| g_PmBE & 2

bKw CÎmar` àíZ : 3 A§H$ (àË`oH$) Ho$ 7 àíZ {XE JE h¢ & {H$Ýht 5 àíZm| Ho$ CÎma Xr{OE &
35=15

20. ‘‘hWmo‹S>o’’ {H$VZo àH$ma Ho$ hmoVo h¢ ? CZHo$ Zm_ {b{IE & 3

21. B§OZ Ho$ {d{^Þ ^mJm| H$m ‘‘bw{~«Ho$qQ>J’’ H$aZo H$s H$m¡Z-H$m¡Z gr {d{Y`m± h¢ ? CZHo$ Zm_
{b{IE & 3

22. ‘‘ao{S>EQ>a’’ H$m ñdÀN> {MÌ ~ZmH$a CgHo$ {d{^Þ ^mJm| Ho$ Zm_ {b{IE & 3

23. ‘‘[a`a EŠgb’’ Ho$ H$m¡Z-H$m¡Z go H$m`© hmoVo h¢ ? g§jon _| {b{IE & 3

24. ‘‘H¡$ñQ>a’’ na EH$ g§{jßV {Q>ßnUr {b{IE & 3

25. ‘‘gñn¢eZ àUmbr’’ Ho$ H$m¡Z-H$m¡Z go H$m`© hmoVo h¢ ? g§jon _| {b{IE & 3

26. ‘‘~¡Q>ar Q>oñQ>’’ H$aZo Ho$ H$m¡Z-H$m¡Z go VarHo$ hmoVo h¢ ? CZHo$ Zm_ {b{IE & 3

.107 8

Very Short Answer Type questions : There are 7 questions of 2 marks each.
Answer any 5 questions. 25=10

13. What is the function of an ‘‘Oil Dispenser’’ ? 2

14. Define ‘‘Lubrication’’. 2

15. What is the function of a ‘‘Universal Joint’’ ? 2

16. Define ‘‘Camber’’. 2

17. What are the types of ‘‘Frames’’ ? 2

18. What are the types of ‘‘Batteries’’ ? 2

19. Explain in brief the rules of ‘‘Control of Traffic’’. 2

Short Answer Type questions : There are 7 questions of 3 marks each. Answer
any 5 questions. 35=15

20. What are the types of ‘‘Hammers’’ ? Write their names. 3

21. What are the methods of ‘‘Lubricating’’ the various parts of an engine ?
Write their names. 3

22. Make a neat sketch of a ‘‘Radiator’’ and write the names of its various
parts. 3

23. What are the functions of ‘‘Rear Axle’’ ? Write in brief. 3

24. Write a short note on ‘‘Castor’’. 3

25. What are the functions of ‘‘Suspension System’’ ? Write in brief. 3

26. What are the methods of ‘‘Battery Testing’’ ? Write their names. 3

.107 9 P.T.O.

IÊS> I
{Z~§YmË_H$ àíZ : 5 A§H$ (àË`oH$) Ho$ 5 àíZ {XE JE h¢ & {H$Ýht 3 àíZm| Ho$ CÎma Xr{OE &
53=15
27. ‘‘Q>¡ßg’’ H$mo n[a^m{fV H$s{OE & `h {H$VZo àH$ma Ho$ hmoVo h¢ ? g{MÌ dU©Z H$s{OE & 5

28. ‘‘_mBH«$mo_rQ>a’’ {H$VZo àH$ma Ho$ hmoVo h¢ ? {H$gr EH$ H$m ñdÀN> {MÌ ~ZmH$a dU©Z H$s{OE & 5

29. ‘‘~¡Q>ar’’ _| à`moJ {H$E OmZo dmbo amgm`{ZH$ nXmW© H$m¡Z-H$m¡Z go hmoVo h¢ ? g§jon _| dU©Z
H$s{OE & 5

30. {ZåZ{b{IV _| go {H$Ýht Xmo Ho$ ‘‘`mVm`mV {M•’’ ~ZmBE : 5

(H$) Mm¡amhm (H«$m°g-amoS²>g)
(I) AmdmµO dmbo {g½Zëg _Zm h¢
(J) J{V gr_m

31. ‘‘_yb^yV g‹S>H$ gmdYm{Z`m| (H$m¡ebm|)’’ Ho$ ~mao _| {dñVmanyd©H$ dU©Z H$s{OE & 5

.107 10

SECTION B
Essay type questions : There are 5 questions of 5 marks each. Attempt any
3 questions. 53=15

27. Define ‘‘Taps’’. What are the types of taps ? Explain with a sketch. 5

28. What are the types of ‘‘Micrometer’’ ? Explain any one with the help of a
neat sketch. 5

29. What are the chemicals which are used in a ‘‘Battery’’ ? Explain in brief. 5

30. Draw the ‘‘Traffic Signs’’ for any two of the following : 5

(a) Cross-roads

(b) Use of sound signals prohibited

(c) Speed limit

31. Describe in detail about the ‘‘Basic Road Manoeuvres’’. 5

.107 11 P.T.O.