Download GTU BE/B.Tech 2019 Summer 7th Sem New 2170203 Vehicle Dynamics Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII(NEW) EXAMINATION — SUMMER 2019

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Subject Code:2170203 Date:10/05/2019
Subject Name:Vehicle Dynamics
Time:02:30 PM TO 05:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Define (i) Lift (ii) Drag. 03
(b) Explain SAE Vehicle axis. 04

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(c) Derive an equation to calculate the dynamic axial load for the 07
following condition (i) Vehicle is on ground (ii) Vehicle is in low
speed acceleration (iii) vehicle is on grade.

Q.2 (a) Define (i) Slip angle (ii) Camber thrust. 03
(b) Describe about aerodynamic aids. 04

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(c) Classify types of tyres with neat sketch along with their 07
advantages and disadvantages.
OR
(c) Define rolling resistance. Explain factors affecting rolling 07
resistance.

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Q.3 (a) Define active suspension. 03
(b) Explain anti-dive suspension geometry. 04
(c) Illustrate about roll center analysis. 07
OR
Q.3 (a) Justify need of suspension system, 03

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(b) Distinguish independent suspension and dependent suspension. 04
(c) Classify types of suspension systems along with pro and cons of 07
each.

Q.4 (a) Explain height of motorcycles center of gravity. 03
(b) Define wheelbase and steering axis angle of motorcycle. 04

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(c) Explain Quasi-static rollover of a rigid vehicle. 07
OR
Q.4 (a) Justify importance of trail. 03
(b) Define fork offset and wheel flop of motorcycle. 04
(c) Explain Quasi-static rollover of a suspended vehicle. 07

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Q.5 (a) Define (i) Camber (ii) Under steer (iii) Over steer 03
(b) Differentiate between steering system used in front wheel drive 04
system and steering system used in rear wheel drive vehicle.
(c) Justify need of steering system. Explain steering geometry errors. 07
OR

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Q.5 (a) Define (i) Caster (ii) Neutral steer (iii) Wheelbase 03
(b) Explain four wheel steering system. 04
(c) Explain steering system forces and moments. 07

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