MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
For a two rotor system, the length of one shaft(A) is twice the other(B), then what is the relation between the Mass moment of inertia of the shafts.a) 2I(A) = I(B)b) I(A) = 2I(B)c) I(A) = I(B)d) 2I( |
| A. | is twice the other(B), then what is the relation between the Mass moment of inertia of the shafts.a) 2I(A) = I(B) |
| B. | I(A) = 2I(B) |
| C. | I(A) = I(B) |
| D. | 2I(A) = 3I(B) |
| Answer» B. I(A) = 2I(B) | |
| 2. |
For a two rotor system, the mass moment of inertia of one shaft(A) is twice the other(B), then what is the relation between the length of the shafts.a) 2L(A) = L(B)b) L(A) = 2L(B)c) L(A) = L(B)d) 2L( |
| A. | is twice the other(B), then what is the relation between the length of the shafts.a) 2L(A) = L(B) |
| B. | L(A) = 2L(B) |
| C. | L(A) = L(B) |
| D. | 2L(A) = 3L(B) |
| Answer» B. L(A) = 2L(B) | |
| 3. |
Keeping the mass moment of inertia of both the shafts in a two rotor system same, if the length of one shaft is doubled what should be the effect on the length of other shaft? |
| A. | Doubled |
| B. | Halved |
| C. | Constant |
| D. | Increased to 4 times |
| Answer» B. Halved | |
| 4. |
In the given figure if N is the node then NQ acts as which of the following system? |
| A. | Single rotor system |
| B. | Two rotor system |
| C. | Three rotor system |
| D. | Four rotor system |
| Answer» B. Two rotor system | |
| 5. |
In the given figure, considering PN as one shaft, If the mass moment of inertia is increased to four times, then what will be the effect on free torsional vibrations of a rotor at P? |
| A. | Increases 4 times |
| B. | Increases 2 times |
| C. | Decreases 4 times |
| D. | Decreases 2 times |
| Answer» E. | |
| 6. |
For occurrence of free torsional vibration which of the condition is necessary? |
| A. | Rotors moving in same direction |
| B. | Rotors having same frequency |
| C. | Rotors having different frequency |
| D. | Rotors rotate in the same sense |
| Answer» C. Rotors having different frequency | |
| 7. |
In the given figure representing a two rotor system, what is the line LNM called? |
| A. | Node line |
| B. | Elastic line |
| C. | Inelastic line |
| D. | Breaking line |
| Answer» C. Inelastic line | |
| 8. |
In a two rotor system, torsional vibration occurs only if the rotors are moving in the same direction. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Consider P and Q as the shaft having two rotors at the end of it, what is the point N known as in the given figure? |
| A. | Node |
| B. | Elastic point |
| C. | Inelastic point |
| D. | Breaking point |
| Answer» B. Elastic point | |