Question Papers For Board Examinations 2020

Class – XII

Subject – Auto Engineering

• Subject :- Auto Engineering
• Class : XII
• Year : 2020

SECTION A

Multiple Choice Questions : There are 12 questions of 1 mark each. Answer any 10 questions. 1x10=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
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) 90⁰C temperature
(B) 80⁰C temperature
(C) 50⁰C temperature
(D) 20⁰C 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
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
Very Short Answer Type questions : There are 7 questions of 2 marks each. Answer any 5 questions. 2x5=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. 3x5=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

SECTION B

Essay type questions : There are 5 questions of 5 marks each. Attempt any 3 questions. 5x3=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
 

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Courtesy: CBSE