Download GTU BE/B.Tech 2017 Winter 7th Sem New 2170203 Vehicle Dynamics Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2017 Winter 7th Sem New 2170203 Vehicle Dynamics Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2017
Subject Code: 2170203 Date: 02/11/2017

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) Explain Lumped mass of Vehicle. 03
(b) Draw and explian vehicle Fixed Coordinate system. 04
(c) Draw and Explain various Aerodynamic Forces and Moments acting on the vehicle.




07
Q.2 (a) Explain Pressure distribution around the vehicle 03
(b) List the various shape of vehicles and give the value of Aerodynamic Drag coefficient
for each shape of vehicle.
04
(c) Explain empirical and analytical methods for understanding of vehicle dynamics
performance, along with its benefits and limitations.
07
OR
(c) What is braking coefficient? Explain the parameters which affect braking coefficients 07
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 produced by a vehicle tire. 07
OR
Q.3 (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.4 (a) Expalin Difference between dependent and independent suspensystem 03
(b) Draw and explain antdive suspension geometry 04
(c) Explain Active suspension and Roll centre analysis. 07
OR
Q.4 (a) Explain Anti squat suspension geometry. 03
(b) Explain MacPherson Strut Suspension system. 04
(c) Draw quarter car model of vehicle representing passive suspension system. Obtain the
mathematical model for the same in steady state vibration for sprung and unsprung mass.
07
Q.5 (a) Differentiate between Davis steering and Ackerman steering mechanism. 03
(b) Define steering geometry error. Explain the effect of geometry error on dynamics of
vehicle.
04
(c) Explain the following turning response properties:
Under steer gradient.
Neutral steer.
Under steer.
Over steer.
Characteristic speed and Critical speed
07
OR
Q.5 (a) What is the important of rollover? List types of rollover of the vehicle. 03
(b) What is quasistatic rollover of a suspended vehicle? Draw and explain rollreaction on
vehicle.
04
(c) Explain various resistances to motion of a vehicle and explain their effect on
performance of a vehicle.
07

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