MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Dynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following factor is not responsible for the stability of a 4 wheel vehicle while negotiating a turn? |
| A. | Pitching |
| B. | Reaction due to weight of Vehicle |
| C. | Effect of Gyroscopic couple due to Wheel |
| D. | Effect of Gyroscopic Couple due to Engine |
| Answer» B. Reaction due to weight of Vehicle | |
| 2. |
Assuming that a vehicle is taking a left turn, The gyroscopic couple acting on the vehicle has a tendency to _____ the inner wheels and ____ the outer wheels. |
| A. | Press, Lift |
| B. | Lift, Press |
| C. | Press, Press |
| D. | Lift, Lift |
| Answer» C. Press, Press | |
| 3. |
Overturning couple is independent of the track width. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 4. |
The overturning couple acting on the four wheeler vehicle is balanced by which of the following forces? |
| A. | Centripetal force |
| B. | Centrifugal force |
| C. | Vertical reactions |
| D. | Horizontal reactions |
| Answer» D. Horizontal reactions | |
| 5. |
Let x be the track width of the vehicle, then which of the following expression is correct for vertical reaction Q at the two outer or inner wheels? |
| A. | Q = (Mv<sup>2</sup>. h)/ (R.x) |
| B. | Q = (Mv<sup>2</sup>)/ R |
| C. | Q = Mv<sup>2</sup>. x/ (R.h) |
| D. | Q = (Mv<sup>2</sup>)/ (x) |
| Answer» B. Q = (Mv<sup>2</sup>)/ R | |
| 6. |
In order to maintain contact between inner wheel and ground the sum of vertical reactions at each of the outer and inner wheels should be less than______ |
| A. | W |
| B. | W/2 |
| C. | W/4 |
| D. | W/3 |
| Answer» D. W/3 | |
| 7. |
The relation between overturning couple and height of centre of gravity is given by_______ |
| A. | Co = Fcxh |
| B. | Co = Mv<sup>2</sup>xh/R |
| C. | Co = Mv<sup>2</sup> * (h/R)<sup>2</sup> |
| D. | Co = Mv<sup>2</sup> * h/R<sup>2</sup> |
| Answer» B. Co = Mv<sup>2</sup>xh/R | |
| 8. |
If the net gyroscope couple is negative then which of the following is true? |
| A. | The reaction will be vertically downwards on the outer wheels and vertically upwards on the inner wheels |
| B. | The reaction will be vertically upwards on the outer wheels and vertically downwards on the inner wheels |
| C. | The reaction will be vertically downwards on the outer wheels and vertically downwards on the inner wheels |
| D. | The reaction will be vertically upwards on the outer wheels and vertically upwards on the inner wheels |
| Answer» B. The reaction will be vertically upwards on the outer wheels and vertically downwards on the inner wheels | |
| 9. |
The positive sign is used to determine the gyroscope couple in which of the following cases? |
| A. | When the wheels and rotating parts of the engine rotate in the same direction |
| B. | When the wheels and rotating parts of the engine rotate in the opposite direction |
| C. | When the precession is clockwise |
| D. | When the precession is anticlockwise |
| Answer» D. When the precession is anticlockwise | |
| 10. |
Which of the following relation is correct regarding the net gyroscope couple C acting on a four wheel vehicle? |
| A. | w. p (4 Iw G.Ie)<sup>2</sup> |
| B. | w. p (4 Iw* G.Ie) |
| C. | w. p (4 Iw G.Ie) |
| D. | w<sup>2</sup>(4 Iw G.Ie) |
| Answer» D. w<sup>2</sup>(4 Iw G.Ie) | |