MCQOPTIONS
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MCQOPTIONS
This section includes 16 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. |
A Hooke’s joint is used to connect two |
| A. | coplanar and non-parallel shafts |
| B. | non-coplanar and non-parallel shafts |
| C. | coplanar and parallel shafts |
| D. | non-coplanar and parallel shafts |
| Answer» C. coplanar and parallel shafts | |
| 2. |
In automobiles, Hooke’s joint is used between which of the following? |
| A. | Clutch and gear box |
| B. | Gear box and differential |
| C. | Differential and wheels |
| D. | Flywheel and clutch |
| Answer» C. Differential and wheels | |
| 3. |
THE_FRICTIONAL_TORQUE_TRANSMITTED_BY_A_DISC_OR_PLATE_CLUTCH_IS_SAME_AS_THAT_OF?$ |
| A. | flat pivot bearing |
| B. | flat collar bearing |
| C. | conical pivot bearing |
| D. | trapezoidal pivot bearing |
| Answer» C. conical pivot bearing | |
| 4. |
In automobiles, Hooke’s joint is used between which of the following?$# |
| A. | Clutch and gear box |
| B. | Gear box and differential |
| C. | Differential and wheels |
| D. | Flywheel and clutch |
| Answer» C. Differential and wheels | |
| 5. |
The_frictional_torque_transmitted_by_a_cone_clutch_is_same_as_that_of$ |
| A. | flat pivot bearing |
| B. | flat collar bearing |
| C. | conical pivot bearing |
| D. | trapezoidal pivot bearing |
| Answer» E. | |
| 6. |
The angle between the axes of two shafts connected by Hooke’s joint is 18°. Determine the angle turned through by the driving shaft when the velocity ratio is maximum.$ |
| A. | 90° |
| B. | 180° |
| C. | 270° |
| D. | 360° |
| Answer» C. 270¬¨¬®‚Äö√†√ª | |
| 7. |
Two shafts with an included angle of 160° are connected by a Hooke’s joint. The driving shaft runs at a uniform speed of 1500 r.p.m. The driven shaft carries a flywheel of mass 12 kg and 100 mm radius of gyration. Find the maximum angular acceleration of the driven shaft.$ |
| A. | 3090 rad/s<sup>2</sup> |
| B. | 4090 rad/s<sup>2</sup> |
| C. | 5090 rad/s<sup>2</sup> |
| D. | 6090 rad/s<sup>2</sup> |
| Answer» B. 4090 rad/s<sup>2</sup> | |
| 8. |
A Hooke’s joint is used to connect two$ |
| A. | coplanar and non-parallel shafts |
| B. | non-coplanar and non-parallel shafts |
| C. | coplanar and parallel shafts |
| D. | non-coplanar and parallel shafts |
| Answer» C. coplanar and parallel shafts | |
| 9. |
The frictional torque transmitted in a conical pivot bearing, considering uniform wear, i? |
| A. | 1/2 × μ.W. R cosec α |
| B. | 2/3 × μ.W. R cosec α |
| C. | 3/4 × μ.W. R cosec α |
| D. | μ.W.R cosec α |
| Answer» B. 2/3 ‚Äö√†√∂‚àö‚â• ‚âà√≠¬¨‚à´.W. R cosec ‚âà√≠¬¨¬± | |
| 10. |
The frictional torque transmitted in a flat pivot bearing, considering uniform pressure, is |
| A. | 1/2 × μ.W. R |
| B. | 2/3 × μ.W. R |
| C. | 3/4 × μ.W. R |
| D. | μ.W.R |
| Answer» C. 3/4 ‚Äö√†√∂‚àö‚â• ‚âà√≠¬¨‚à´.W. R | |
| 11. |
The maximum efficiency of a screw jack is |
| A. | 1 – sinφ/ 1 + sinφ |
| B. | 1 + sinφ/ 1 – sinφ |
| C. | 1 – tanφ/ 1 + tanφ |
| D. | 1 + tanφ/ 1 – tanφ |
| Answer» B. 1 + sin‚âà√¨‚àö√∫/ 1 ‚Äö√Ñ√∂‚àö√ë‚àö¬® sin‚âà√¨‚àö√∫ | |
| 12. |
The efficiency of a screw jack is maximum, when |
| A. | α = 45º + φ/2 |
| B. | α = 45º – φ/2 |
| C. | α = 90º + φ |
| D. | α = 90º − φ |
| Answer» C. ‚âà√≠¬¨¬± = 90¬¨¬®‚Äö√†¬¥ + ‚âà√¨‚àö√∫ | |
| 13. |
The radius of a friction circle for a shaft of radius r rotating inside a bearing is |
| A. | r sin φ |
| B. | r cos φ |
| C. | r tan φ |
| D. | r cot φ |
| Answer» B. r cos ‚âà√¨‚àö√∫ | |
| 14. |
The efficiency of a screw jack is given by |
| A. | tan (α + φ)/tan α |
| B. | tan α / tan (α + φ) |
| C. | tan (α − φ)/ tan α |
| D. | tan α/ tan (α − φ) |
| Answer» C. tan (‚âà√≠¬¨¬± ‚Äö√Ñ√∂‚àö‚Ć‚àö‚↠‚âà√¨‚àö√∫)/ tan ‚âà√≠¬¨¬± | |
| 15. |
In a screw jack, the effort required to lift the load W is given by |
| A. | P = W tan (α – φ) |
| B. | P = W tan (α + φ) |
| C. | P = W cos (α – φ) |
| D. | P = W cos (α + φ) |
| Answer» C. P = W cos (‚âà√≠¬¨¬± ‚Äö√Ñ√∂‚àö√ë‚àö¬® ‚âà√¨‚àö√∫) | |
| 16. |
The angle of inclination of the plane, at which the body begins to move down the plane, is called |
| A. | angle of friction |
| B. | angle of repose |
| C. | angle of projection |
| D. | none of the mentioned |
| Answer» B. angle of repose | |