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How many terminals does the MQ2 Gas Sensor have?

How many terminals does the MQ2 Gas Sensor have? Correct Answer 4

The MQ2 Gas Sensor has 4 terminals. These include the Vcc for accepting positive voltage to power the sensor, GND for ground connections to complete the circuit and activate the sensor, Dout which provides a digital output terminal and an Aout which provides the analog output terminal.

Related Questions

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?
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?
Does the MQ2 Gas Sensor have a fixed sensitivity?
Statement (I): To use a sensor, we generally need to add signal conditioning circuitry, such as circuits which amplify and convert from analog to digital, to get the sensor signal in the right form, take account of any non-linearities, and calibrate it. Statement (II): A smart sensor is integrated with the required buffering and conditioning circuitry in a single element and provides functions beyond that of just a sensor.
What is the use of the MQ2 Gas Sensor?
What will happen if we supply a voltage of 25V to the Vcc of the MQ2 Gas Sensor?
What is the maximum output voltage that the MQ2 Gas Sensor can put out on its analog output pin?
Can the MQ2 Gas Sensor differentiate between two different gases with the same PPM?
What is the name of the mesh surrounding the MQ2 Gas Sensor?
In a newly developed innovative idea brought up by CSIR in India, gas turbine exhaust gas are being utilized to convert feedwater into steam. Certain data of the experiment are as follows: mass flow rate of exhaust gas = 40 kg/hr, enthalpy of exhaust gas at the time of their exit from gas turbine is 600 kJ/kg, steam turbine output as measured by brake dynamometer = 60 hp-sec, thermal efficiency of steam power plant is 0.25, efficiency of exhaust gas in converting feedwater into steam is taken as 50%. Find the enthalpy of exhaust gas remaining after they generate steam from feedwater?