Vehicle Dynamics Mid  II, November  2014
1.When a two degree freedom system is vibrating with the second natural frequency, the ratio of the amplitude of two masses is

Equal to +1

Equal to 1

Greater than +1

Less than 1

Answer: B
2.If a system is subjected to a suddenly applied nonperiodic force, the response will be

Periodic

Transient

Steady

Unsteady

Answer: B
3.Dynamic vibration absorber is suitable for _____________

Constant speed machines

Varying speed machines

Zero speed range machines

None of the above

Answer: A
4.The angle between the tire plane and the vertical plane is called

Tire Plane angle

Side Slip angle

Camber angle

Velocity Vector

Answer: C
5.A vibration beam has ___________ degrees of freedom

Single

two

three

multi

Answer: D
6.Which of the following method is used to find all the Eigen values and Eigen Vectors simultaneously?

Rayleigh’s Method

Holzer’s method

Matrix Iteration method

Jacobi’s method

Answer: D
7.HOLZER’s method is _____________________

Extract method

Trial and error method

Approximate method

None

Answer: B
8.Vulcanization is the process of __________________

Controlling a volcano

Controlling the pressure of tyre

Converting natural rubber into a harder and more durable material

Increasing the strength of tube

Answer: C
9.If a spring –mass dashpot system is subjected to excitation by constant harmonic force then at resonance, its amplitude of vibrations will be

Infinity

inversely proportional to damping

directly proportional to damping

decreases exponentially with time

Answer: A
10.For a fixedfixed beam the total uniformly distributed mass can be shown to be replaced by ____ % of its mass to act at the centre

50

37.2

23.2

100

Answer: B
11.The principal mode is said to be normal mode of vibration if the amplitude for one of the masses is taken as ________________
Answer: Unity
12.The inertia coupling is also known as ______________
Answer: Dynamic Coupling
13.Dunkereley’s method is most suited for determination of _____________________
Answer: Natural Frequency of Structures
14.The method used to find the Eigen values and Eigen vectors one at a time is _______________
Answer: Matrix Iteration Method
15.Flexibility matrix is the inverse of ______________ matrix.
Answer: Stiffness
16.An automobile is simulated by the simplified 2DOF system. The first mode of the system is a representation for _______________
Answer: Vertical Translation
17.SAE stands for______________________
Answer: Society of Automotive Engineers
18.Two masses both ‘m’ are fixed on a tightly stretched string, such that masses at one third points on the string. The second natural frequency is______________________
Answer: √3T/ml
19.What are the independent coordinates an automobile if pitch and bounce motions, _____________ and_______________
Answer: Angular and linear
20._______________ type of damper used in an automobile
Answer: Viscous