Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 7th Sem 2170203 Vehicle Dynamics Previous Question Paper
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VII (NEW) EXAMINATION ? WINTER 2020
Subject Code:2170203 Date:19/01/2021
Subject Name:Vehicle Dynamics
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) What is Vehicle Axis System and Earth Fixed Axis System?
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(b) Derive the equation to calculate the dynamic axle load when the
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vehicle on level ground under static condition.
(c) Explain vehicle fixed co-ordinate system with neat sketch.
07
Q.2 (a) Write a short note on aerodynamic drag.
03
(b) Explain pressure distribution around the vehicle.
04
(c) Define brake factor in case of drum brake system. Draw forces acting
07
on brake shoes and explain self servo effect.
Q.3 (a) Give the name of major elements of tyre and their suitable materials.
03
(b) Discus in details various factors affecting on tyre life.
04
(c) Explain Camber thrust. Write a short note on Cornering force
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produced by a vehicle tire.
Q.4 (a) Construction of Bias & Radial tyre with the help of neat sketch.
03
(b) Define ride and explain ride dynamic system.
04
(c) Draw clear sketch of Tyre axis system and explain the details.
07
Q.5 (a) Explain Difference between dependent and independent suspension
03
system.
(b) Draw and explain anti dive suspension geometry
04
(c) Explain Active suspension and Roll centre analysis.
07
Q.6 (a) Explain Anti squat suspension geometry.
03
(b) Explain MacPherson Strut Suspension system.
04
(c) Draw quarter car model of vehicle representing passive suspension
07
system. Obtain the mathematical model for the same in steady state
vibration for sprung and un sprung mass.
Q.7 (a) Differentiate between Davis steering and Ackerman steering
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mechanism.
(b) Define steering geometry error. Explain the effect of geometry error
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on dynamics of vehicle.
(c) Explain the following turning response properties:
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Under steer gradient.
Neutral steer.
Under steer.
Over steer.
Characteristic speed and Critical speed
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Q.8 (a) What is the important of rollover? List types of rollover of the vehicle.
03
(b) What is quasi static rollover of a suspended vehicle? Draw and explain
04
roll reaction on vehicle.
(c) Explain Wheelbase, Fork offset, Trail & Wheel flop for motorcycle.
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This post was last modified on 04 March 2021