Question Papers For Board Examinations 2020

Class – XII

Subject – Auto Shop Repair And Practice

• Subject :- Auto Shop Repair And Practice
• Class : XII
• Year : 2020

SECTION A

Answer any 10 questions out of the given 12 questions of 1 mark each. 1x10=10

1. According to the ‘‘Service Manual’’ which is given by the dealer to the purchaser at the time of purchasing the vehicle, the second free service of the vehicle should be made 1

(A) After the vehicle has completed 500 km
(B) After the vehicle has completed 800 km
(C) After the vehicle has completed 1000 km
(D) None of the above
 

2. At the time of purchasing the vehicle, a book is given to each purchaser with the vehicle, whose name is 1
(A) Service Book
(B) Service Manual
(C) Service Resister
(D) None of the above
 

3. Which of the following is a ‘‘Permanent Fastener’’ ? 1
(A) Rivet
(B) Nut and Bolt
(C) Keys and Cotters
(D) None of the above

4. Which of the following is not an ‘‘Automobile Fastener’’ ? 1
(A) Rivet
(B) Nut and Bolt
(C) Tie Rod
(D) Jam Nut

5. The ‘‘quality’’ of ‘‘Rivet’’ is tested 1
(A) By Bending Test
(B) By Flattened Test
(C) By Tensile Test
(D) None of the above

6. The function of ‘‘Height Gauge’’ is 1
(A) To measure the depth
(B) To measure the height
(C) To measure the width
(D) None of the above

7. What is the cause of ‘‘defect’’ in the ‘‘Vehicle Frame’’ ? 1
(A) Heavy loading
(B) To drive the vehicle carelessly
(C) An accident
(D) All of the above causes

8. In motor vehicles, the ‘‘Transmission System’’ is mounted 1
(A) In between the clutch and the propeller shaft.
(B) In between the clutch and the rear differential gear.
(C) In between engine and the clutch.
(D) None of the above

9. The function of ‘‘Transmission System’’ is to give more torque 1
(A) At the time of starting the vehicle
(B) At the time of giving acceleration to vehicle
(C) At the time of pulling heavy load
(D) For all of the above cited functions

10. The colour coding of wires used in the electrical circuits of vehicles, which is given by an automobile company, is of 1
(A) Three colours
(B) Seven colours
(C) Five colours
(D) None of the above

11. ‘‘Contact-Breaker Points’’ are generally made of 1
(A) Plastic
(B) Steel
(C) Copper
(D) Tungsten

12. An ‘‘Alternator Frame’’ is made of 1
(A) Cast Iron
(B) Brass
(C) Aluminium
(D) Copper

Answer any 5 questions out of the given 7 questions of 2 marks each. 2x5=10

13. What is the function of ‘‘Machine Screw’’ ? 2
14. What is the function of ‘‘Steel Rule’’ ? 2
15. What is the function of ‘‘Shackle’’ in a ‘‘Helper Spring’’ ? 2
16. From which ‘‘Metal’’ are the ‘‘Piston Rings’’ made ? 2
17. What are the functions of ‘‘Transmission System’’ in automobile vehicles ? 2
18. How is the ‘‘Battery’’ recharged ? 2
19. What is the difference between a ‘‘Motor’’ and a ‘‘Generator’’ ? 2

Answer any 5 questions out of the given 7 questions of 3 marks each. 3x5=15

20. What are the types of ‘‘Callipers’’ ? 3
21. What are the functions of ‘‘Suspension System’’ ? 3
22. Write a short note ‘‘Engine Decarbonisation’’. 3
23. Write a short note on ‘‘Automatic Transmission System’’. 3
24. What is ‘‘Stop-light Switch’’ ? Which light of an automobile vehicle is switched on by it ? Explain with the help of a neat sketch. 3
25. From which ‘‘Metal’’ and of what ‘‘Shape’’ is the ‘‘Generator Frame’’ made ? Explain in brief with the help of a neat sketch. 3
26. What are the types of ‘‘Ignition Systems’’ ? Make a neat sketch of any one and explain the same in brief.

SECTION B

Answer any 3 questions out of the given 5 questions of 5 marks each. 5x3=15

27. Explain the working of ‘‘Vernier Calliper’’ with the help of a neat sketch. 5
28. Make a neat sketch of ‘‘Bevel Protractor’’ and write the names of its parts and also write its ‘‘Least Count’’. 5
29. Give the classification of ‘‘Suspension Springs’’. 5
30. What are the types of ‘‘Valve Mechanism’’ ? Explain any one with a neat sketch. 5
31. Explain the working of ‘‘Universal Joint’’ with the help of a neat sketch. 5

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Courtesy: CBSE