MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Basic Science and Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In actual machine, |
| A. | mechanical advantage is greater than velocity ratio |
| B. | mechanical advantage is equal to the velocity ratio |
| C. | mechanical advantage is less than velocity ratio |
| D. | None of these |
| Answer» D. None of these | |
| 2. |
Efficiency of a simple lifting machine is given by_______ where MA means Mechanical Advantages and VR means Velocity Ratio. |
| A. | MA/VR |
| B. | VR |
| C. | MA |
| D. | VR/MA |
| Answer» B. VR | |
| 3. |
A weight of 500 kg was moved through a distance of 7 cm by an effort of 20 kg which moves through a distance of 650 cm. Find out mechanical advantage and velocity ratio of a machine? |
| A. | 25, 92.86 |
| B. | 24, 91.86 |
| C. | 23, 90.86 |
| D. | 22, 93.86 |
| Answer» B. 24, 91.86 | |
| 4. |
A wheel and axle are used to raise a weight of 240 kg. The radius of the wheel is 50 cm and axle is 10 cm. When a force of 75 kg is applied on the wheel, the weight is raised with a uniform velocity. Find the mechanical advantage and velocity ratio. |
| A. | 3.2, 5 |
| B. | 3.4, 7 |
| C. | 3.3, 6 |
| D. | 3.5, 8 |
| Answer» B. 3.4, 7 | |
| 5. |
Efficiency of a self locking machine is |
| A. | > 75% |
| B. | < 50% |
| C. | 100 % |
| D. | 0 |
| Answer» C. 100 % | |