05412401 - Vehicle Dynamics_2nd Mid

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Code No: 05412401 Set No. 1JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

IV B.Tech. I Sem., II Mid-Term Examinations, Oct./Nov. 2009VEHICLE DYNAMICS

Objective ExamName: ______________________________ Hall Ticket No.

Answer All Questions. All Questions Carry Equal Marks.Time: 20 Min. Marks: 20.

I. Choose the correct alternative:

1. Which of the following is the direct influence coefficients [ ]a) aij, ajj b) aii, ajj c) aii, ai d) ajj, ajj

2. Which of the following of the statement is correct for the influence coefficient? [ ]

a) A=[K]-1

b) [K] = [A-1

] c) 1 & 2 d) None of the above

3. Which of the following of the method is find out the Eigen values and Eigen vectors [ ]

a) Dunkerleys Method b) Rayleighs Methodc) Holzers Method d) Method of Matrix Iteration

4. Which of the following of statement is correct for the Maxwells reciprocal system [ ]

a) aij= aji b) aii= aji c) aij= ajj d) aii= ajj

5. The Damping influence coefficient is similar to the [ ]

a) Influence coefficient b) flexibility coefficientc) Stiffness influence coefficient d) Maxwells reciprocal

6. How many natural frequencies and free vibration of any point in the system for the two degree of

freedom. [ ]a) 4 b) 3 c) 2 d) 1

7. In which condition of the spring force acting these two masses M1 1= -k1x1+ k2 (x2-x1),M2 2= -k3x2- k2 (x2-x1) [ ]

a) x2 x1 b) x2 x1 c) x2 x1 d) x2 x1

8. Find the first natural frequencies of the system from the frequency equation is m2

4-

2m(k+k2)2+(k2+2kk2)=0 [ ]

a) (k+2k2)/m b) (k+k2)/m c) k/m d) (k+1)/m

9. When one of the roots of the frequency equation of a vibrating system is equal to the zero, thisindicates that one of the natural frequencies of the system is equal to zero. Such systems are known

as [ ]a) Orthogonal principal b) Generalized coordinates

c) Semi-definite systems d) forced oscillations

Cont2


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2. The Damping influence coefficient is similar to the [ ]a) Influence coefficient b) flexibility coefficient

c) Stiffness influence coefficient d) Maxwells reciprocal

3. How many natural frequencies and free vibration of any point in the system for the two degree offreedom. [ ]

a) 4 b) 3 c) 2 d) 1

4. In which condition of the spring force acting these two masses M1 1= -k1x1+ k2 (x2-x1),

M2 2= -k3x2- k2 (x2-x1) [ ]a) x2 x1 b) x2 x1 c) x2 x1 d) x2 x1


4-

2m(k+k2)2+(k2+2kk2)=0 [ ]

a) (k+2k2)/m b) (k+k2)/m c) k/m d) (k+1)/m


as [ ]

a) Orthogonal principal b) Generalized coordinatesc) Semi-definite systems d) forced oscillations

7. Which method is particularly useful for calculating the frequencies of torsional vibration in shafts

is [ ]a) Stodolta method b) matrix iteration c) Holzer method d) none of the above

8. Which of the following is the direct influence coefficients [ ]a) aij, ajj b) aii, ajj c) aii, aii d) ajj, ajj


a) A=[K]-1

b) [K] = [A-1


Cont2


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Code No: 05412401 -2- Set No. 2



II. Fill in the blanks:

11. ________ is the used for when only the lowest Eigen value & Eigen vector of multi degree of

freedom system are desired.

12. The analysis that resonance in the system will occur when the exciting frequencies ________ any

of the natural frequencies of the system.13. _____________ is an oscillatory motion of a mechanical system.

14. The __________ is due to the suspension system and the tyres.

15. The lagranges equation for generalized coordinates (qi) is _______________________16. An n-degree of freedom system requires ___ independent coordinates to define the system

completely at any instant.

17. The ratio of the section height to the section width is known as ____________ of the tyre.

18. __________________ of a system is defined as force or moment required at the location ofcoordinate qi when a unit displacement (rectilinear/ angular) is given to coordinate held fixed.

19. Vibration can be eliminated by ____________ a properly designed auxiliary.

20. The ratio FTR/F0 is known as ________________________

-oOo-


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freedom. [ ]

a) 4 b) 3 c) 2 d) 1


M2 2= -k3x2- k2 (x2-x1) [ ]

a) x2 x1 b) x2 x1 c) x2 x1 d) x2 x1


4-

2m(k+k2)2+(k2+2kk2)=0 [ ]

a) (k+2k2)/m b) (k+k2)/m c) k/m d) (k+1)/m


as [ ]

a) Orthogonal principal b) Generalized coordinates

c) Semi-definite systems d) forced oscillations

5. Which method is particularly useful for calculating the frequencies of torsional vibration in shaftsis [ ]a) Stodolta method b) matrix iteration c) Holzer method d) none of the above

6. Which of the following is the direct influence coefficients [ ]a) aij, ajj b) aii, ajj c) aii, aii d) ajj, ajj


a) A=[K]-1

b) [K] = [A-1


8. Which of the following of the method is find out the Eigen values and Eigen vectors [ ]a) Dunkerleys Method b) Rayleighs Methodc) Holzers Method d) Method of Matrix Iteration

9. Which of the following of statement is correct for the Maxwells reciprocal system [ ]a) aij= aji b) aii= aji c) aij= ajj d) aii= ajj

Cont2


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Code No: 05412401 -2- Set No. 3




11. _____________ is an oscillatory motion of a mechanical system.





16. __________________ of a system is defined as force or moment required at the location of

coordinate qi when a unit displacement (rectilinear/ angular) is given to coordinate held fixed.






of the natural frequencies of the system.

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4-

2m(k+k2)2+(k2+2kk2)=0 [ ]

a) (k+2k2)/m b) (k+k2)/m c) k/m d) (k+1)/m

2. When one of the roots of the frequency equation of a vibrating system is equal to the zero, this

indicates that one of the natural frequencies of the system is equal to zero. Such systems are known

as [ ]

a) Orthogonal principal b) Generalized coordinatesc) Semi-definite systems d) forced oscillations

3. Which method is particularly useful for calculating the frequencies of torsional vibration in shafts

is [ ]

a) Stodolta method b) matrix iteration c) Holzer method d) none of the above

4. Which of the following is the direct influence coefficients [ ]

a) aij, ajj b) aii, ajj c) aii, aii d) ajj, ajj


a) A=[K]-1

b) [K] = [A-1









freedom. [ ]

a) 4 b) 3 c) 2 d) 1

Cont2


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Code No: 05412401 -2- Set No. 4


M2 2= -k3x2- k2 (x2-x1) [ ]a) x2 x1 b) x2 x1 c) x2 x1 d) x2 x1





14. __________________ of a system is defined as force or moment required at the location of

coordinate qi when a unit displacement (rectilinear/ angular) is given to coordinate held fixed.






of the natural frequencies of the system.19. _____________ is an oscillatory motion of a mechanical system.


-oOo-

05412401 - Vehicle Dynamics_2nd Mid

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