MCQOPTIONS
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MCQOPTIONS
This section includes 13 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. |
In measuring the chordal thickness, the vertical scale of a gear tooth caliper is set to the chordal or corrected addendum to locate the caliper jaws at the pitch line.If a = addendum, t = circular thickness of tooth at pitch diameter D, then chordal thickness is equal to |
| A. | a + t/D |
| B. | a + t2/D |
| C. | a + t3/2D |
| D. | a + t2/4D |
| Answer» E. | |
| 2. |
Which of the following gear ratio does not result in hunting tool |
| A. | 77/20 |
| B. | 76/21 |
| C. | 75/22 |
| D. | 71/25 |
| Answer» E. | |
| 3. |
If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, the formative number of teeth is written as |
| A. | T sec3 φ |
| B. | T sec2 φ |
| C. | T/sec3φ |
| D. | T cosec φ |
| Answer» B. T sec2 φ | |
| 4. |
IN_MEASURING_THE_CHORDAL_THICKNESS,_THE_VERTICAL_SCALE_OF_A_GEAR_TOOTH_CALIPER_IS_SET_TO_THE_CHORDAL_OR_CORRECTED_ADDENDUM_TO_LOCATE_THE_CALIPER_JAWS_AT_THE_PITCH_LINE.IF_A_=_ADDENDUM,_T_=_CIRCULAR_THICKNESS_OF_TOOTH_AT_PITCH_DIAMETER_D,_THEN_CHORDAL_THICKNESS_IS_EQUAL_TO?$ |
| A. | a + t/D |
| B. | a + t<sup>2</sup>/D |
| C. | a + t<sup>3</sup>/2D |
| D. | a + t<sup>2</sup>/4D |
| Answer» E. | |
| 5. |
Which of the following gear ratio does not result in hunting too? |
| A. | 77/20 |
| B. | 76/21 |
| C. | 75/22 |
| D. | 71/25 |
| Answer» E. | |
| 6. |
Which of the following is not the correct property of involute curve? |
| A. | The form or shape pf an involute curve depends upon the diameter of base circle from which it is derived |
| B. | The angular motion of two involute gear teeth rotating at a uniform rate will be uniform, irrespective of the centre distance |
| C. | The relative rate of motion between driving and driven gears having involute tooth curves, is established by the diameters of their pitch circles |
| D. | the pitch diameters of mating involute gears are directly proportional to the diameters of their respective base circles |
| Answer» D. the pitch diameters of mating involute gears are directly proportional to the diameters of their respective base circles | |
| 7. |
Pick out the false statement about relationships of spur gears. |
| A. | Pitch diameter = module x No. of teeth |
| B. | Module = 25.4/diametral pitch |
| C. | dedendum = 1.25 x module |
| D. | Base pitch = module x –ø x sin…∏ |
| Answer» E. | |
| 8. |
The outside diameter of an involute gear is equal to pitch circle diameter plus |
| A. | 2 addendum |
| B. | 2 dedendum |
| C. | 3.1416 module |
| D. | 2.157 module |
| Answer» B. 2 dedendum | |
| 9. |
The helix angle for double helical gears may be made up to |
| A. | 45° |
| B. | 60° |
| C. | 75° |
| D. | 90° |
| Answer» B. 60¬¨¬®‚Äö√†√ª | |
| 10. |
The helix angle for single helical gears ranges from |
| A. | 10° to 15° |
| B. | 15° to 20° |
| C. | 20° to 35° |
| D. | 35° to 50° |
| Answer» D. 35¬¨¬®‚Äö√†√ª to 50¬¨¬®‚Äö√†√ª | |
| 11. |
In helical gears, the right hand helices on one gear will mesh ____________ helices on the other gear. |
| A. | right hand |
| B. | left hand |
| C. | opposite |
| D. | none of the mentioned |
| Answer» C. opposite | |
| 12. |
In helical gears, the distance between similar faces of adjacent teeth along a helix on the pitch cylinders normal to the teeth, is called |
| A. | normal pitch |
| B. | axial pitch |
| C. | diametral pitch |
| D. | module |
| Answer» B. axial pitch | |
| 13. |
If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, the formative number of teeth is written as |
| A. | T sec<sup>3</sup> φ |
| B. | T sec<sup>2</sup> φ |
| C. | T/sec<sup>3</sup>φ |
| D. | T cosec φ |
| Answer» B. T sec<sup>2</sup> ‚âà√¨‚àö√∫ | |