MCQOPTIONS
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MCQOPTIONS
This section includes 11 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 spur gear transmits 10 kW at a pitch line velocity of 10 m/s; driving gear has a diameter of 1.0 m. Find the tangential force between the driver and the follower, and the transmitted torque respectively. |
| A. | 1 kN and 0.5 kN-m |
| B. | 10 kN and 5 kN-m |
| C. | 0.5 kN and 0.25 kN-m |
| D. | 1 kN and 1 kN-m |
| Answer» B. 10 kN and 5 kN-m | |
| 2. |
Consider the following characteristics:1. Small interference2. Strong tooth.3. Low production cost4. Gear with small number of teeth. Those characteristics which are applicable to stub 20° involute system would include |
| A. | 1 alone |
| B. | 2, 3 and 4 |
| C. | 1, 2 and 3 |
| D. | 1, 2, 3 and 4 |
| Answer» C. 1, 2 and 3 | |
| 3. |
Consider the following statements regarding the choice of conjugate teeth for the profile of mating gears:1. They will transmit the desired motion2. They are difficult to manufacture.3. Standardisation is not possible4. The cost of production is low. Which of these statements are correct? |
| A. | 1, 2 and 3 |
| B. | 1, 2 and 4 |
| C. | 2, 3 and 4 |
| D. | 1, 3 and 4 |
| Answer» B. 1, 2 and 4 | |
| 4. |
Consider the following statements:1. A stub tooth has a working depth larger than that of a full-depth tooth.2. The path of contact for involute gears is an arc of a circle. Which of the statements given above is/are correct? |
| A. | Only 1 |
| B. | Only 2 |
| C. | Both 1 and 2 |
| D. | Neither 1 nor 2 |
| Answer» E. | |
| 5. |
A_spur_gear_transmits_10_kW_at_a_pitch_line_velocity_of_10_m/s;_driving_gear_has_a_diameter_of_1.0_m._Find_the_tangential_force_between_the_driver_and_the_follower,_and_the_transmitted_torque_respectively.$ |
| A. | 1 kN and 0.5 kN-m |
| B. | 10 kN and 5 kN-m |
| C. | 0.5 kN and 0.25 kN-m |
| D. | 1 kN and 1 kN-m |
| Answer» B. 10 kN and 5 kN-m | |
| 6. |
In gears, interference takes place whe? |
| A. | The tip of a tooth of a mating gear digs into the portion between base and root circles |
| B. | Gears do not move smoothly in the absence of lubrication |
| C. | Pitch of the gear is not same |
| D. | gear teeth are undercut |
| Answer» B. Gears do not move smoothly in the absence of lubrication | |
| 7. |
Common contact ratio of a pair of spur pinion and gear is |
| A. | Less than 1·0 |
| B. | Equal to 1 |
| C. | Between 2 and 3 |
| D. | Greater than 3 |
| Answer» D. Greater than 3 | |
| 8. |
In involute gears the pressure angle is |
| A. | Dependent on the size of teeth |
| B. | dependent on the size of gears |
| C. | Always constant |
| D. | always variable |
| Answer» D. always variable | |
| 9. |
Which one of the following is true for involute gears? |
| A. | Interference is inherently absent |
| B. | Variation in centre distance of shafts increases radial force |
| C. | A convex flank is always in contact with concave flank |
| D. | Pressure angle is constant throughout the teeth engagement |
| Answer» E. | |
| 10. |
An external gear with 60 teeth meshes with a pinion of 20 teeth, module being 6 mm. What is the centre distance in mm? |
| A. | 120 |
| B. | 180 |
| C. | 240 |
| D. | 300 |
| Answer» D. 300 | |
| 11. |
Gearing contact is which one of the following? |
| A. | Sliding contact |
| B. | Sliding contact, only rolling at pitch point |
| C. | Rolling contact |
| D. | Rolling and sliding at each point of contact |
| Answer» C. Rolling contact | |