MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Arduino knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the name of the mesh surrounding the MQ2 Gas Sensor? |
| A. | Anti-Heat Mesh |
| B. | Anti-Explosion Mesh |
| C. | Anti-Air Mesh |
| D. | Filtration Mesh |
| Answer» C. Anti-Air Mesh | |
| 2. |
What is the full form of the abbreviation called PPM? |
| A. | Parts Per Million |
| B. | Parts Per Milligram |
| C. | Parts Per Megagram |
| D. | Parts Per Millilitre |
| Answer» B. Parts Per Milligram | |
| 3. |
If the PPM concentration of a gas that is being detected by the MQ2 Gas Sensor increases what will happen to its Analog Output pin? |
| A. | Voltage Increases |
| B. | Voltage Decreases |
| C. | Voltage becomes 0 |
| D. | Voltage doesn t change |
| Answer» B. Voltage Decreases | |
| 4. |
If the PPM concentration of a gas that is being detected by the MQ2 Gas Sensor increases what will happen to its Digital Output pin? |
| A. | Voltage Increases |
| B. | Voltage Decreases |
| C. | Voltage becomes 0 |
| D. | Voltage doesn t change |
| Answer» E. | |
| 5. |
Can the MQ2 Gas Sensor differentiate between two different gases with the same PPM? |
| A. | Yes |
| B. | No |
| Answer» C. | |
| 6. |
What is the maximum output voltage that the MQ2 Gas Sensor can put out on its analog output pin? |
| A. | 1V |
| B. | 140V |
| C. | 5V |
| D. | 10V |
| Answer» D. 10V | |
| 7. |
What will happen if we supply a voltage of 25V to the Vcc of the MQ2 Gas Sensor? |
| A. | Damage is caused |
| B. | Module will shut down |
| C. | Module will not respond for the time the voltage is applied |
| D. | Module will function normally |
| Answer» B. Module will shut down | |
| 8. |
Does the MQ2 Gas Sensor have a fixed sensitivity? |
| A. | Yes |
| B. | No |
| Answer» C. | |
| 9. |
How many terminals does the MQ2 Gas Sensor have? |
| A. | 1 |
| B. | 3 |
| C. | 2 |
| D. | 4 |
| Answer» E. | |
| 10. |
What is the use of the MQ2 Gas Sensor? |
| A. | Object Identification |
| B. | To provide 3G Connectivity |
| C. | To measure presence of gas |
| D. | To measure Wi-Fi strength |
| Answer» D. To measure Wi-Fi strength | |