Q:

Which module enables GPS capabilities to the Adafruit FONA 3G+GPS Breakout?

A) Qualcomm 8015 B) Qualcomm 20111
C) Qualcomm 234 D) Qualcomm 8013
 
Answer & Explanation Answer: A) Qualcomm 8015

Explanation: The Adafruit FONA 3G+GPS Breakout’s GPS capabilities is powered by the Qualcomm 8015 GPS Module. It enables geolocation services from the same device for all kinds of embedded and IOT applications. It can be controlled using the serial port.

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65
Q:

What is the use of the Adafruit FONA 3G+GPS Breakout?

A) To measure luminosity of something B) To provide 3G Connectivity
C) To measure temperature D) To measure Wi-Fi strength
 
Answer & Explanation Answer: B) To provide 3G Connectivity

Explanation: The Adafruit FONA 3G+GPS Breakout is a module that provides 3G network connectivity for all kinds of embedded systems. It also has provisions for GPS tracking for providing on board geolocation capabilities.

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83
Q:

Does the OV7670 Camera Module support Lens Shading Correction?

A) Yes B) No
 
Answer & Explanation Answer: A) Yes

Explanation: Lens shading correction helps software remove image structures that originate in the imaging system and don’t belong to the actual image information hence giving drastically more accurate images.

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62
Q:

Does one need to calibrate the LM35 Temperature Sensor Module?

A) Yes B) No
 
Answer & Explanation Answer: B) No

Explanation: There is no need to calibrate the LM35 Temperature Sensor Module since it is already pre-calibrated precisely to the degrees centigrade scale and this is absolute and cannot be changed after the time of manufacture.

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54
Q:

What technology does the OV7670 Camera Module use for image sub-sampling?

A) VarioPixel B) ConstPix
C) Activarr D) Tidal
 
Answer & Explanation Answer: A) VarioPixel

Explanation: VarioPixel is the correct name of the sub-sampling technology used by the OV7670 Camera Module. Sub-sampling in image processing is the process of reducing the image size by removing information all together.

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81
Q:

What is the approximate self heating temperature of the LM35 Temperature Sensor Module?

A) 0.08°C B) 0.91°C
C) 0.11°C D) 1.23°C
 
Answer & Explanation Answer: A) 0.08°C

Explanation: The correct value of self heating under usual conditions for the LM35 Temperature Sensor Module is approximately 0.08°C. Self heating is the amount of heat that a particular electronic component generates while operating in a circuit due to internal resistances and impedances to the flow of electrons through it.

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70
Q:

What is the formula for obtaining the temperature value in degrees centigrade from the LM35 Temperature Sensor while using an ADC?

A) °C=ADC/10mV B) °C=ADC/100mV
C) °C=ADC/1mV D) °C=ADC/120mV
 
Answer & Explanation Answer: A) °C=ADC/10mV

Explanation: The correct formula for converting the voltage reading taken from the ADC into the correct degrees centigrade value of the temperature surrounding the sensor is °C=ADC/10mV. This is because 10mV is the scale factor of the LM35 Temperature Sensor Module.

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117
Q:

If the temperature would be 25°C then what would be the corresponding output on the LM35 Temperature Sensor?

A) 250mV B) 200mV
C) 25V D) 250V
 
Answer & Explanation Answer: A) 250mV

Explanation: The temperature sensitivity of the LM35 Temperature Sensor Module is 10mV/°C which means that the value of the voltage output will increase linearly with the increase in the surrounding temperature, or in other words it is linearly proportional. Hence if the temperature outside is 25°C then the output would be (10×25)mV or 250mV.

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