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. |
The relation between the pitch of the chain (p) and pitch circle diameter of the sprocket (D) is given by |
| A. | p = D sin(900/T) |
| B. | p = D sin(1200/T) |
| C. | p = D sin(1800/T) |
| D. | p = D sin(3600/T) |
| Answer» D. p = D sin(3600/T) | |
| 2. |
The chain drive transmits ____________ power as compared to belt drive. |
| A. | more |
| B. | less |
| C. | equal |
| D. | none of the mentioned |
| Answer» B. less | |
| 3. |
The disadvantages of the V-belt drive over flat belt drive are |
| A. | The V-belt drive cannot be used with large centre distances. |
| B. | The V-belts are not so durable as flat belts. |
| C. | The construction of pulleys for V-belts is more complicated than pulleys for flat belts. |
| D. | all of the mentioned |
| Answer» E. | |
| 4. |
In flat belt drive, the condition for maximum power transmission is given by (where T maximum tension and Tc centrifugal tension in belt) |
| A. | T = 3Tc |
| B. | T = 2Tc |
| C. | T = πTc |
| D. | T = 3πTc |
| Answer» B. T = 2Tc | |
| 5. |
In belt drive power transmitted is given by:(Where Tt, Ts, and v are tight side tension, slack side tension and linear velocity of belt respectively) |
| A. | \(\frac{{\left( {{T_t} - {T_s}} \right)}}{{2v}}\) |
| B. | \( \frac{{\left( {{T_t} + {T_s}} \right)}}{{2v}}\) |
| C. | (Tt - Ts)v |
| D. | (Tt + Ts)v |
| Answer» D. (Tt + Ts)v | |
| 6. |
Compared to a belt drive, a chain drive is generally characterized by |
| A. | constant velocity ratio |
| B. | absence of slip |
| C. | heavier construction |
| D. | all of the above |
| Answer» E. | |
| 7. |
THE_CHAIN_DRIVE_TRANSMITS______________POWER_AS_COMPARED_TO_BELT_DRIVE.?$ |
| A. | more |
| B. | less |
| C. | equal |
| D. | none of the mentioned |
| Answer» B. less | |
| 8. |
In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be$ |
| A. | 15 |
| B. | 17 |
| C. | 21 |
| D. | 25 |
| Answer» C. 21 | |
| 9. |
The relation between the pitch of the chain (p) and pitch circle diameter of the sprocket (D) is given by$ |
| A. | p = D sin(90<sup>0</sup>/T) |
| B. | p = D sin(120<sup>0</sup>/T) |
| C. | p = D sin(180<sup>0</sup>/T) |
| D. | p = D sin(360<sup>0</sup>/T) |
| Answer» D. p = D sin(360<sup>0</sup>/T) | |
| 10. |
The greater angle of articulation will increase the life of the chain. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
The speed of the sprocket reduces as the chain pitch _____________ for a given number of teeth. |
| A. | increases |
| B. | decreases |
| C. | remains same |
| D. | none of the mentioned |
| Answer» B. decreases | |
| 12. |
Which one of the following is a positive drive? |
| A. | Crossed flat belt drive |
| B. | Rope drive |
| C. | V-belt drive |
| D. | Chain drive |
| Answer» E. | |
| 13. |
For cutting multi-start threads, the speed ratio is expressed in terms of the lead of the job thread and lead of the lead screw threads. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
Industrial rotors will not have uniform diameter throughout their lengths. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
The distance between the hinge centre of a link and the corresponding hinge centre of the adjacent link is called |
| A. | pitch of the chain |
| B. | bush roller chain |
| C. | block chain |
| D. | none of the mentioned |
| Answer» B. bush roller chain | |
| 16. |
The advantages of the V-belt drive over flat belt drive are |
| A. | The V-belt drive gives compactness due to the small distance between the centres of pulleys. |
| B. | The drive is positive, because the slip between the belt and the pulley groove is negligible. |
| C. | Since the V-belts are made endless and there is no joint trouble, therefore the drive is smooth. |
| D. | all of the mentioned |
| Answer» E. | |