Goa Board Class 12 Question Paper Mar 2019 Auto Servicing and Garage Management

2019 III 12 1000 Seat No. Time : 2 Hours AUTO SERVICING & GARAGE MANAGEMENT Subject Code V 3 7 1 Total No. of Questions : 5 (Printed Pages : 2) Maximum Marks : 50 INSTRUCTIONS : (i) Answer each question on a fresh page. (ii) Write the number of questions and sub-questions clearly. (iii) All questions are compulsory. (iv) Figures to the right indicate full marks. 1. (A) Answer the following questions : (1) Give any two reasons for excessive consumption of oil in engine. 1 (2) Why is valve timing necessary in engine ? 2 (3) Explain why cambering of leaf spring is done. 2 (4) What are the causes of clutch slipping ? 2 (B) Write down any six defects of water colling system. 3 2. (A) Answer the following questions : (1) How is the cleaning of paper air filter done ? 1 (2) Write procedure to replace the Gear Box Oil of motorcycle.2 (3) Write the procedure to rectify the trouble ‘‘Brake Drag’’ in braking system. 2 (4) How to increase the life of car tyre ? 2 (B) State any six possible causes and remedies for ‘hard steering’. 3

3. (A) Answer the following questions : (1) How will you repair the air cells of radiator ? 1 (2) How will you inspect service limits of Rotor type oil pump ? 2 (3) How will you control inventory in workshop ? 2 (4) Considering which points the vehicle inspector gives fitness certificate to the Vehicle ? 2 (B) Write in detail the procedure to conduct compression test of petrol engine by using compression gauge. 3 4. (A) Answer the following questions : (1) What do you understand by brake winding ? 1 (2) How will you check the ‘Stub axle’ after accident of a vehicle ? 2 (3) What are the methods of storekeeping in spare part shop ? 2 (4) What steps are needed to do maintenance of Universal Joint ? 2 (B) How will you overcome the trouble ‘‘Over Heating of an Engine’’ ? 3 5. (A) Answer the following questions : (1) What is vapour lock in fuel system ? 1 (2) How will you check the tooth contact between a crown wheel and pinion by using red lead Paste ? 2 (3) Mention any four employer based factors which effect job satisfaction. 2 (4) Explain the term ‘Registering Authority’. 2 (B) Write procedure to do the following test of injectors used in diesel fuel system : 3 (1) Pressure test (2) Spray test.