Related InterviewSolutions

• What is the purpose of the DATA pin in the rotary encoder?(a) To provide direction of motion(b) To power the module(c) To shut down the module(d) To provide analog reference voltageThe question was asked at a job interview.This interesting question is from Rotary Encoder topic in portion Interfacing of Sensors, Actuators, and Other Modules of Arduino
• 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 normallyThis question was addressed to me during an online interview.The origin of the question is MQ2 Gas Sensor Module in chapter Interfacing of Sensors, Actuators, and Other Modules of Arduino
• 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°CI had been asked this question in an internship interview.The question is from LM35 Temperature Sensor Module topic in chapter Interfacing of Sensors, Actuators, and Other Modules of Arduino
• 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 changeThis question was addressed to me during an online exam.The query is from MQ2 Gas Sensor Module in section Interfacing of Sensors, Actuators, and Other Modules of Arduino
• How many terminals does the MQ2 Gas Sensor have?(a) 1(b) 3(c) 2(d) 4The question was asked during an interview.My question is taken from MQ2 Gas Sensor Module in division Interfacing of Sensors, Actuators, and Other Modules of Arduino
• 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/120mVI have been asked this question in a national level competition.My question is based upon LM35 Temperature Sensor Module in chapter Interfacing of Sensors, Actuators, and Other Modules of Arduino
• Is there an interrupt pin on the RFID Module?(a) Yes(b) NoI got this question in an interview for internship.Query is from RFID Module in chapter Interfacing of Sensors, Actuators, and Other Modules of Arduino
• What is the maximum output voltage that the rotary encoder can put out on its DATA output pin?(a) 1V(b) 140V(c) 5V(d) 10VI got this question in an interview for internship.Enquiry is from Rotary Encoder topic in chapter Interfacing of Sensors, Actuators, and Other Modules of Arduino
• 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 MillilitreThis question was addressed to me in quiz.This question is from MQ2 Gas Sensor Module in chapter Interfacing of Sensors, Actuators, and Other Modules of Arduino
• What is the sensitivity of the LM35 Temperature Sensor Module?(a) 10mV/°C(b) 1mV/°C(c) 23mV/°C(d) 12mV/°CThe question was asked during a job interview.Query is from LM35 Temperature Sensor Module in section Interfacing of Sensors, Actuators, and Other Modules of Arduino