## Vehicle Dynamics, Question Paper of B.Tech 6 Semester, Download Previous Years Question Paper 3

• Thursday, October 20, 2016
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B. Tech. (AE) (Sem.-6th)
VEHICLE DYNAMICS
Subject Code: BTAE-603
Paper ID: (A2382)

Time: 3 Hrs.                                                                                                           Max. Marks: 60

INSTRUCTIONS TO CANDIDATES:
1. SE C T ION A is C OMPL USARY consisting of TEN questions carrying TWO marks each.
2. SECTION B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

SECTION A

1. Write briefly:
(a) Define transmissibility.
(b) Differentiate free, forced and damped vibrations.
(c) How Dunkerley's method is different from Holzer method?
((1) State sprung mass frequency.
(e) What is the difference between over steer and under steer?
(f) What is wheel hop?
(g) Define simple harmonic motion.
(h) State wheel wobble.
(i) Discuss vibration absorber.
(1') Write a note on transient effects in cornering.

SECTION B

2. What are three elementary parts of a vibratory system? Explain briefly.

3. Explain the terms (a) pitching (b) yawing (c) rolling.
4. A motor car has a wheel base of 2.64 meter, the height of its centre of gravity above the ground is 0.61 meter and it is 1.12 meter in front of the rear axle. If the car is travelling at 40 km/ hr on a level track, determine the minimum distance in which the car may be stopped, when (a) the rear wheels are braked (b) all wheels are braked.
5. Write down the requirements of a vehicle suspension system.
6. Write short notes on Stability of a vehicle on a slope, on a curve and a banked road.

SECTION C

7. Explain in detail Holzer method with the help of example.
8. Discuss in detail Gough's tyre characteristics. Also explain modal analysis in multi degree of freedom systems.
9. Write short notes on:
(a) Logarithmic decrement
(b) Rayleigh's upper bound method

(c) Vehicle suspensions in force and apt directions