Arduino MCQ

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• What is the purpose of the DATA pin in the rotary encoder?
  ক

  To provide direction of motion

  খ

  To power the module

  গ

  To shut down the module

  ঘ

  To provide analog reference voltage
• What is the maximum output voltage that the rotary encoder can put out on its DATA output pin?
  ক

  1V

  খ

  140V

  গ

  5V

  ঘ

  10V
• What will happen if we supply a voltage of 25V to the Vcc of the rotary encoder?
  ক

  Damage is caused

  খ

  Module will shut down

  গ

  Module will not respond for the time the voltage is applied

  ঘ

  Module will function normally
• What is the purpose of the CLK pin in the rotary encoder?
  ক

  To provide pulse reference

  খ

  To power the module

  গ

  To shut down the module

  ঘ

  To provide analog reference voltage
• How many terminals does the rotary encoder have?
  ক

  1

  খ

  3

  গ

  5

  ঘ

  4
• What is the use of the rotary encoder?
  ক

  To measure RPM or speed

  খ

  To provide 3G Connectivity

  গ

  To measure presence of gas

  ঘ

  To measure Wi-Fi strength
• What is the name of the mesh surrounding the MQ2 Gas Sensor?
  ক

  Anti-Heat Mesh

  খ

  Anti-Explosion Mesh

  গ

  Anti-Air Mesh

  ঘ

  Filtration Mesh
• What is the full form of the abbreviation called PPM?
  ক

  Parts Per Million

  খ

  Parts Per Milligram

  গ

  Parts Per Megagram

  ঘ

  Parts Per Millilitre
• 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?
  ক

  Voltage Increases

  খ

  Voltage Decreases

  গ

  Voltage becomes 0

  ঘ

  Voltage doesn’t change
• 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?
  ক

  Voltage Increases

  খ

  Voltage Decreases

  গ

  Voltage becomes 0

  ঘ

  Voltage doesn’t change
• Can the MQ2 Gas Sensor differentiate between two different gases with the same PPM?
  ক

  Yes

  খ

  No
• What is the maximum output voltage that the MQ2 Gas Sensor can put out on its analog output pin?
  ক

  1V

  খ

  140V

  গ

  5V

  ঘ

  10V
• What will happen if we supply a voltage of 25V to the Vcc of the MQ2 Gas Sensor?
  ক

  Damage is caused

  খ

  Module will shut down

  গ

  Module will not respond for the time the voltage is applied

  ঘ

  Module will function normally
• Does the MQ2 Gas Sensor have a fixed sensitivity?
  ক

  Yes

  খ

  No
• How many terminals does the MQ2 Gas Sensor have?
  ক

  1

  খ

  3

  গ

  2

  ঘ

  4
• What is the use of the MQ2 Gas Sensor?
  ক

  Object Identification

  খ

  To provide 3G Connectivity

  গ

  To measure presence of gas

  ঘ

  To measure Wi-Fi strength
• Till what voltage are the logic pins on the RFID Module resistant to?
  ক

  5V

  খ

  3.3V

  গ

  2V

  ঘ

  12V
• What is the minimum working current internally in the RFID Module?
  ক

  12 mA

  খ

  13 mA

  গ

  10 mA

  ঘ

  1 mA
• Is there an interrupt pin on the RFID Module?
  ক

  Yes

  খ

  No
• What is the maximum read range of the RFID Module?
  ক

  2 cm

  খ

  1 cm

  গ

  10 cm

  ঘ

  5 cm
• What is the maximum data rate of the RFID Module?
  ক

  11 Mbps

  খ

  1 Kbps

  গ

  10 Mbps

  ঘ

  11 Gbps
• Which frequency does the RFID Module operate in?
  ক

  12.98 MHz

  খ

  14.67 MHz

  গ

  19.56 MHz

  ঘ

  13.56 MHz
• What will happen if we supply a voltage of 25V to the Vcc of the RFID Module?
  ক

  Damage is caused

  খ

  Module will shut down

  গ

  Module will not respond for the time the voltage is applied

  ঘ

  Module will function normally
• Is there an SDA pin on the RFID Module?
  ক

  Yes

  খ

  No
• What is the role of the MISO pin in the RFID Module?
  ক

  Master In Slave Out

  খ

  Manage Internal Slave Output

  গ

  Master Internal Search Optimization

  ঘ

  Manage Input Slave Op
• What is the use of the RFID Module?
  ক

  Object Identification

  খ

  To provide 3G Connectivity

  গ

  To measure temperature

  ঘ

  To measure Wi-Fi strength
• Does one need to calibrate the LM35 Temperature Sensor Module?
  ক

  Yes

  খ

  No
• What is the approximate self heating temperature of the LM35 Temperature Sensor Module?
  ক

  0.08°C

  খ

  0.91°C

  গ

  0.11°C

  ঘ

  1.23°C
• What is the formula for obtaining the temperature value in degrees centigrade from the LM35 Temperature Sensor while using an ADC?
  ক

  °C=ADC/10mV

  খ

  °C=ADC/100mV

  গ

  °C=ADC/1mV

  ঘ

  °C=ADC/120mV
• If the temperature would be 25°C then what would be the corresponding output on the LM35 Temperature Sensor?
  ক

  250mV

  খ

  200mV

  গ

  25V

  ঘ

  250V