Interfacing sensors

Qus. 1 : In I2C connection, which pin on the Arduino Uno is utilized for SCL (Serial clock)?

1. D2
2. A5
3. A2
4. A4

Qus. 2 : Which of the Arduino pins is connected to the Data5 (D5) pin on the 16x2 character LCD?

1. Pin No. 3
2. Pin No. 2
3. Pin No. 5
4. Pin No. 4

Qus. 3 : <p>What is the output of “pin 1” if “pin2” is sent “1011” where 1 is 5V and 0 is 0V?</p><pre><span style="font-size: 14px;">int pin1 = 12;<br></span><span style="font-size: 14px;">int pin2 = 11;<br></span><span style="font-size: 14px;">void setup() {<br></span><span style="font-size: 14px;">&nbsp; &nbsp;pinMode(pin1, OUTPUT);<br></span><span style="font-size: 14px;">&nbsp; &nbsp;pinMode(pin2, INPUT);<br></span><span style="font-size: 14px;">&nbsp; &nbsp;Serial.begin(9600);<br></span><span style="font-size: 14px;">}<br></span><span style="font-size: 14px;">void loop() {<br></span><span style="font-size: 14px;">&nbsp; if(digitalRead(pin2)==1) {<br></span><span style="font-size: 14px;"><span style="white-space:pre"> </span> digitalWrite(pin1,LOW);<br></span><span style="font-size: 14px;"><span style="white-space:pre"> </span>&nbsp; }<br></span><span style="font-size: 14px;">else if(digitalRead(pin2)==0) {<br></span><span style="font-size: 14px;">digitalWrite(pin1,HIGH);<br></span><span style="font-size: 14px;">}<br></span><span style="font-size: 14px;">}</span></pre><div><br></div>

1. 1110
2. 0100
3. 1111
4. 1011

Qus. 4 : What is temperature in Celsius LM35 for corresponding 270mV as a output voltage?

1. 50
2. 25
3. 27
4. 54

Qus. 5 : How many terminals does the MQ2 Gas Sensor have?

1. 1
2. 2
3. 3
4. 4

Qus. 6 : Which one is incorrect for the Arduino UNO’s analog pin group?

1. Logic (1/0) not used for input/output.
2. Used for the digital conversion of analog values taken from external environment.
3. There are 6 analog input pins.
4. The resolution of each input is 10 bits.

Qus. 7 : Fading technique used for____________pin in Arduino.

1. A2
2. D2
3. PWM
4. 5V

Qus. 8 : Which statement is true in concern with Request-response IoT communication model?

1. Each request-response pair is dependent of others
2. Request- response is a stateless communication model
3. Client server architecture of Request-response uses queues
4. In request-response publisher is a client and broker are server.

Qus. 9 : What will happen if we supply a voltage of 25V to the IR sensor?

1. Damage is caused
2. Sensor will work fine
3. Sensor will not respond for the time voltage applied
4. Sensor will function normally

Qus. 10 : Which Function is used for PWM pin in Arduino?

1. digitalWrite()
2. serial.print ( )
3. analogWrite()
4. pinMode()

Qus. 11 : A digit value is converted to an analogue signal using which of the following Methods?

1. analogRead()
2. ADC
3. DAC
4. pinMode()

Qus. 12 : Type of circuit board which can be used for extension of capabilities of Arduino board

1. Bread Board
2. Shield
3. Actuator
4. Microprocessor

Qus. 13 : Which software is used to upload the Arduino Sketches to the board?

1. avrgcc
2. g++
3. cpython for windows
4. avrdude

Qus. 14 : What is pin connect block?

1. All pins are having a function without reserved
2. Some pins are reserved
3. Pins have more than one function
4. Multiplexing of some pins

Qus. 15 : In What of Pin, DHT sensor should be connected?

1. analog pin
2. digital pin
3. any one
4. None of these

Programs

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