McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 251. |
Bearing suitable for fluctuating loads is |
| A. | Ball bearing |
| B. | Needle roller bearing |
| C. | Sleeve bearing |
| D. | Bush bearing |
| E. | Roller bearing |
| Answer» B. Needle roller bearing | |
| 252. |
Radial distance from the top to the pitch circle for a tooth is known as |
| A. | working depth |
| B. | dedendum |
| C. | addendum |
| D. | None of the above |
| E. | None of the above |
| Answer» C. addendum | |
| 253. |
Higher pressure angle results in |
| A. | Narrow base and weaker teeth |
| B. | Weaker teeth |
| C. | Non-uniform motion transmission |
| D. | Bigger size of gear teeth |
| E. | Wider base and stronger teeth |
| Answer» E. Wider base and stronger teeth | |
| 254. |
In a radial cam with a roller on follwer the prime circle can be defined as |
| A. | the smallest circle tangent to the pitch curve |
| B. | the smallest circle tangent to the cam profile |
| C. | a circle drawn with radius equal to the distance between the pitch point and the centre of base circle |
| D. | None of the above |
| E. | None of the above |
| Answer» A. the smallest circle tangent to the pitch curve | |
| 255. |
Identify the incorrect statement in case of cycloidal gears |
| A. | No lubrication needed |
| B. | Interference does not exist |
| C. | Have less wear |
| D. | Interference exists |
| E. | Ease in transmitting variable loads |
| Answer» D. Interference exists | |
| 256. |
Which one of the following is not applicable to involute profile |
| A. | The angular velocity ratio when tow involutes are in mesh, is inversely proportional to the size of the base circles |
| B. | No involute has a pressure angle until it is brought in contact with other mating involute |
| C. | Involute is the only tooth form that is not sensitive to centre distance of their base circles |
| D. | The shape of the involute profile is dependent only on the dimensions of the base circle |
| E. | The pitch diameters of mating involutes are inversely proportional to their base circle diameters |
| Answer» E. The pitch diameters of mating involutes are inversely proportional to their base circle diameters | |
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