Download GTU BE/B.Tech 2018 Winter 7th Sem Old 170203 Vehicle Dynamics Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 7th Sem Old 170203 Vehicle Dynamics Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VII (OLD) EXAMINATION ? WINTER 2018
Subject Code: 170203 Date: 26/11/2018

Subject Name: Vehicle Dynamics

Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) Define following vehicle dynamic terminologies.
1. Euler angles 2. Camber thrust 3. Brake factor
4. Soft and Hard suspension 5. Slip angle 6. Understeer and Oversteer
7. Roll Steer
07
(b) What is traction limited acceleration? Formulate the equation for maximum
traction force of rear wheel drive having solid rear axle with non locking
differential.
07

Q.2 (a) With the help of road performance curve explain acceleration, gradability and
drawbar pull.
07
(b) Derive the equation to calculate the dynamic axle load for the following condition
of four wheeler.
i) When the vehicle on level ground under static condition.
ii) When the vehicle on grads with low speed acceleration.
07
OR
(b) Illustrate tire print and hydroplaning phenomena. 07

Q.3 (a) Explain Lumped mass and Euler angles. 07
(b) Explain Anti lock Brake system. 07
OR
Q.3 (a) Explain Vehicle aerodynamics forces. 07
(b) Define Roll center and roll axis. Locate the roll center for the following suspension
mechanism.
1) Hotchkiss suspension. 2) Positive swing arm independent suspension.
3) Macpherson strut suspension. 4) Four link rear solid axle suspension.
07

Q.4 (a) Explain : Brake factor, Brake proportioning and Braking efficiency 07
(b) What is braking coefficient? Explain the parameters which affect braking
coefficients.
07
OR
Q.4 (a) Explain: How the vehicle ride performance can be improved by semi or active
suspensions?
07
(b) Explain all the factors of ride comfort. 07

Q.5 (a) Explain: How the vehicle ride performance can be improved by semi or active
suspensions?
07
(b) Explain Vehicle drag components. 07
OR

Q.5 (a) Explain Vehicle aerodynamics forces. 07
(b) Explain: How four wheel steering system improve low speed maneuverability and
high speed cornering?
07

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