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. |
How much time on an average does the LDR take for it s resistance to change when light is incident? |
| A. | 8 to 12 ms |
| B. | 12 min |
| C. | 30 s |
| D. | 354 hr |
| Answer» B. 12 min | |
| 2. |
Do LDR s respond to all wavelengths of light? |
| A. | Yes |
| B. | No |
| Answer» C. | |
| 3. |
If an LDR is connected to an LED and a battery and is brought from the dark to the light, what will be the state of the LED? |
| A. | Lit |
| B. | Not lit |
| C. | Damaged by voltage change |
| D. | Damaged by power surge |
| Answer» B. Not lit | |
| 4. |
What kind of sensor is the LDR Sensor? |
| A. | Passive |
| B. | Active |
| C. | Radio |
| D. | Pressure based |
| Answer» B. Active | |
| 5. |
Which one of the following materials would be used for making an LDR? |
| A. | Lead Sulfide |
| B. | Pure Aluminum |
| C. | Iron Ore |
| D. | Aluminum Oxide |
| Answer» B. Pure Aluminum | |
| 6. |
Which of the formulae give us the relation between resistance and illumination in the LDR Sensor? |
| A. | Resistance = Constant_1 * (Illumination^Constant_2) |
| B. | Resistance = Constant_1 * (Illumination+Constant_2) |
| C. | Resistance = Constant_1 ^ (Illumination-Constant_2) |
| D. | Resistance = Constant_1 + (Illumination^Constant_2) |
| Answer» B. Resistance = Constant_1 * (Illumination+Constant_2) | |
| 7. |
What will happen if we supply a voltage of 250 kV to the terminal of the LDR 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. |
What is the full form of the LDR Sensor? |
| A. | Lithium Diode Resistor |
| B. | Light Diaphragm Resistor |
| C. | Lithium Disk Resistor |
| D. | Light Dependent Resistor |
| Answer» E. | |
| 9. |
How many pins are present in the LDR Sensor? |
| A. | 1 |
| B. | 4 |
| C. | 2 |
| D. | 5 |
| Answer» D. 5 | |
| 10. |
What is the use of the LDR Sensor? |
| A. | Monitors Motion |
| B. | Monitors air pressure |
| C. | Monitors Light Intensity |
| D. | Monitors heartbeat |
| Answer» D. Monitors heartbeat | |