GTU Mechanical Engineering (Semester 8)
Automobile Body Engineering
May 2016
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) Explain body optimization techniques and aerodynamics aids for optimization of drag.
7 M
1 (b) Explain wind tunnel testing of scale model of a Car.
7 M

2 (a) Explain in detail Driver's Visibility. Explain methods of improving visibility.
7 M
Solve any one question from Q2(b) & Q2(c)
2 (b) Explain the various Sources of body noises, testing and methods of elimination of body noise in details.
7 M
2 (c) Write a short note on Water leakage test.
7 M

Solve any two question from Q3(a), Q3(b) & Q3(c), Q3(d)
3 (a) Explain briefly symmetric and asymmetric vertical loads in car.
7 M
3 (b) Explain various types of sections used for frame construction for buses.
7 M
3 (c) Explain the dimensions of driver's seat in relation to controls & driver's cabin design with neat sketch.
7 M
3 (d) List Different types of bus bodies and explain split level, double decker and articulated bus bodies with suitable sketch.
7 M

Solve any two question from Q4(a), Q4(b) & Q4(c), Q4(d)
4 (a) Explain in detail the Spare wheel carrier construction and design for different types of vehicle and weight distribution criteria in relation to Spare wheel location.
7 M
4 (b) What is vehicle safety ? Explain requirements and provisions for vehicle safety.
7 M
4 (c) Explain briefly: 'Heating and Ventilation systems used in auto vehicles'.
7 M
4 (d) Explain crash test to be performed for auto vehicles.
7 M

Solve any two question from Q5(a), Q5(b) & Q5(c), Q5(d)
5 (a) Explain the concept of idealized load carrying structure, structural surface method and shear panel method.
7 M
5 (b) What is dash board ? Explain different instruments included in dash board.
7 M
5 (c) Explain various insulating materials with vibrational characteristics.
7 M
5 (d) Explain step wise various painting processes.
7 M



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