MCQOPTIONS
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MCQOPTIONS
This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Kinematics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The natural frequency of a spring-mass system on earth is ωn. The natural frequency of this system on the moon (gmoon =gearth/6) is |
| A. | ωn |
| B. | 0.408ωn |
| C. | 0.204ωn |
| D. | 0.167ωn |
| Answer» B. 0.408ωn | |
| 2. |
If the radius of gyration of a compound pendulum about an axis through c.g. is more, then its frequency of oscillation will be |
| A. | less |
| B. | more |
| C. | same |
| D. | none of the mentioned |
| Answer» B. more | |
| 3. |
The frequency of oscillation of a cylinder inside a cylinder inside a cylindrical concave surface of bigger radius compared to a small radius will be |
| A. | less |
| B. | more |
| C. | same |
| D. | none of the mentioned |
| Answer» B. more | |
| 4. |
Polar moment of inertia(IP) of a circular disc is to be determined by suspending it by a wire and noting the frequency of oscillations(f) |
| A. | IP ∞ f |
| B. | IP ∞ f2 |
| C. | IP ∞ 1/f2 |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 5. |
A body having moment of inertia of 30 kg m2 is rotating at 210 RPM and mashes with another body at rest having M.I. of 40 kg m2. The resultant speed after meshing will be |
| A. | 90 RPM |
| B. | 100 RPM |
| C. | 80 RPM |
| D. | none of the mentioned |
| Answer» B. 100 RPM | |
| 6. |
IF_THE_RADIUS_OF_GYRATION_OF_A_COMPOUND_PENDULUM_ABOUT_AN_AXIS_THROUGH_C.G._IS_MORE,_THEN_ITS_FREQUENCY_OF_OSCILLATION_WILL_BE?$ |
| A. | less |
| B. | more |
| C. | same |
| D. | none of the mentioned |
| Answer» B. more | |
| 7. |
The natural frequency of a spring-mass system on earth is ωn. The natural frequency of this system on the moon (gmoon =gearth/6) is$# |
| A. | ω<sub>n</sub> |
| B. | 0.408ω<sub>n</sub> |
| C. | 0.204ω<sub>n</sub> |
| D. | 0.167ω<sub>n</sub> |
| Answer» B. 0.408‚âà√¨‚àö¬¢<sub>n</sub> | |
| 8. |
The_Bifilar_suspension_method_is_used_to_determine$ |
| A. | natural frequency of vibration |
| B. | position of balancing weights |
| C. | moment of inertia |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 9. |
A vibratory system consists of a mass 12.5 kg, a spring of stiffness 1000N/m , and a dash-pot with damping coefficient of 15 Ns/m.The value of critical damping of the system is |
| A. | 0.223 Ns/m |
| B. | 17.88 Ns/m |
| C. | 71.4 Ns/m |
| D. | 223.6 Ns/m |
| Answer» E. | |
| 10. |
A vehicle suspension system consists of a spring and a damper. The stiffness of the spring is 3.6 kN/m and the damping constant of the damper is 400 Ns/m. If the mass is 50 kg, then the damping factor (d ) and damped natural frequency (fn), respectively, are |
| A. | 0.471 and 1.19 Hz |
| B. | 0.471 and 7.48 Hz |
| C. | 0.666 and 1.35 Hz |
| D. | 0.666 and 8.50 Hz |
| Answer» B. 0.471 and 7.48 Hz | |
| 11. |
An automotive engine weighing 240 kg is supported on four springs with linear characteristics. Each of the front two springs have a stiffness of 16MN/m while the stiffness of each rear spring is 32MN/m. The engine speed (in rpm), at which resonance is likely to occur, is |
| A. | 6040 |
| B. | 3020 |
| C. | 1424 |
| D. | 955 |
| Answer» B. 3020 | |
| 12. |
The frequency of oscillation of a cylinder inside a cylinder inside a cylindrical concave surface of bigger radius compared to a small radius will b? |
| A. | less |
| B. | more |
| C. | same |
| D. | none of the mentioned |
| Answer» B. more | |
| 13. |
The frequency of oscillation of a bigger diameter cylinder compared to a small cylinder inside a cylinder concave surface will be |
| A. | less |
| B. | more |
| C. | same |
| D. | none of the mentioned |
| Answer» C. same | |
| 14. |
Polar moment of inertia(IP) of a circular disc is to be determined by suspending it by a wire and noting the frequency of oscillations(f) |
| A. | I<sub>P</sub> ‚àû f |
| B. | I<sub>P</sub> ‚àû f<sup>2</sup> |
| C. | I<sub>P</sub> ‚àû 1/f<sup>2</sup> |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 15. |
The frequency of oscillation at moon compared to earth will be |
| A. | 6 times more |
| B. | 6 times less |
| C. | 2.44 times more |
| D. | 2.44 times less |
| Answer» E. | |
| 16. |
Inertia force acts |
| A. | perpendicular to the accelerating force |
| B. | along the direction of accelerating force |
| C. | opposite to the direction of accelerating force |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 17. |
A body having moment of inertia of 30 kg m2 is rotating at 210 RPM and mashes with another body at rest having M.I. of 40 kg m2. The resultant speed after meshing will be |
| A. | 90 RPM |
| B. | 100 RPM |
| C. | 80 RPM |
| D. | none of the mentioned |
| Answer» B. 100 RPM | |
| 18. |
In S.H.M., the velocity vector w.r.t. displacement vector |
| A. | leads by 90<sup>0</sup> |
| B. | lags by 90<sup>0</sup> |
| C. | leads by 180<sup>0</sup> |
| D. | none of the mentioned |
| Answer» B. lags by 90<sup>0</sup> | |
| 19. |
In S.H.M., acceleration is proportional to |
| A. | velocity |
| B. | displacement |
| C. | rate of change of velocity |
| D. | none of the mentioned |
| Answer» C. rate of change of velocity | |