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

Enrolment No.

GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- VII (New) EXAMINATION — WINTER 2019

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Instructions:

1. Attempt all questions.

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

1. Q.1 (a) Explain the effect of dynamic axle load on performance of vehicle. (03)
   (b) Draw and explain vehicle Fixed Coordinate system (04)
   (c) Draw and Explain various Aerodynamic Forces and Moments acting on the vehicle. (07)

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2. 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 wind tunnel test with neat sketch. (07)
   OR
   

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   (a) What is braking coefficient? Explain the parameters which affect braking coefficients (07)

3. 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 slip angle, inflation pressure and tread design. (07)
   

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   OR
   (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)

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4. Q.4 (a) Explain Difference between dependent and independent suspensystem (03)
   (b) Explain anti squat and anti pitch suspension geometry. (04)
   (c) Explain Active suspension and. Roll centre analysis. (07)
   OR
   (a) Explain Anti dive suspension geometry. (03)
   

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   (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)

5. Q.5 (a) Differentiate between Davis steering and Ackerman steering mechanism. (03)
   (b) Explain steering system forces and moments. (04)
   

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   (c) Explain under steer and over steer. (07)
   OR
   (a) What is the important of rollover? List types of rollover of the vehicle. (03)
   (b) Discuss the stability of vehicle resting on slop and running on a curved track. (04)
   (c) Explain various resistances to motion of a vehicle and explain their effect on performance of a vehicle. (07)

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