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Arduino Pcb3

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38 questions
Show answers
  • Q1
    What is the result of the following operation: int X = B11110011; X = X<<3;
    X = (00111100)2
    X = (10011000)2
    X= (00011110)2
    X = (11111100)2
    120s
  • Q2
    What is the result of the following operation: int X = B11110011; X = X>>2;
    X = (10011000)2
    X= (00011110)2
    X = (11111100)2
    X = (00111100)2
    120s
  • Q3
    What is the function of VSS?
    Connected to +5V power.
    Connected to Crystal Oscillator to get clock signal.
    Used to reset the PIC.
    Connected to 0V.
    120s
  • Q4
    What is the function of VDD?
    Connected to +5V power.
    Connected to Crystal Oscillator to get clock signal.
    Connected to 0V.
    Used to reset the PIC.
    120s
  • Q5
    What is the result of the following operation: int X = 23; X = X % 5;
    X=5
    X=4
    X=3
    X = 4.6
    120s
  • Q6
    Which is of the following a suitable application of an Arduino PWM signal?
    Controlling the speed of a LED.
    Sending radio frequency.
    Controlling the intensity of a LDR.
    Controlling the speed of a motor.
    120s
  • Q7
    What is the purpose of using Input / outputs ports in Arduino?
    To transfer data between i/o transducers and program memory.
    To transfer data between i/o transducers and ALU.
    To transfer data between program memory and ALU.
    To transfer data between i/o transducers and register memory.
    120s
  • Q8
    Find the equivalent voltage of a PWM signal which has a duty cycle of 90%.
    4.5V
    5 V
    0.45 V
    5.4 V
    120s
  • Q9
    Find the value of duty in analogWrite(9, duty) of a PWM signal when duty cycle of 90% is required.
    109
    129
    255
    229
    120s
  • Q10
    The operating program will be stored in Arduino in
    program bus
    Flash Memory
    RAM
    ALU
    120s
  • Q11
    What is the right instruction that will make pins in port D 1, 2, 3, 6 and 7 low and other pins high?
    PORTD = B01100111;
    PORTD = B11001110;
    PORTD = B01110010;
    PORTD = B00110001;
    120s
  • Q12
    What will happen when you run the following codes: void setup(){ DDRD = 0xFF; } void loop(){ int i=0; while(i<10){ PORTD = 0xFF; delay(1000); PORTD = 0x00; delay(1000); } // exit (0); }
    All pins in port D will go ON and OFF for 11 times.
    All pins in port D will go ON and OFF for infinity.
    All pins in port D will go ON and OFF 10 times.
    The while loop will not start.
    120s
  • Q13
    What is the final value of the variable num after running the following codes? void loop(){ int num = 0; for(i = 0 ; i <=10 ; i++){ if(i<4) num = num * 2; else ; } }
    0
    16
    12
    8
    120s
  • Q14
    What will happen when SW1 is pressed and released? int SW1 = 13; void setup (){ pinMode(SW1, INPUT); } void loop(){ while(digitalRead(SW1) == HIGH){ PORTB = 0x15; delay (1000); } }
    Pin 4, 5, 6 and 7 in port B go high than low while other pins stay low.
    Pin 0, 1, 2 and 3 in port B go high than low while other pins stay low.
    Pin 0, 2 and 4 in port B stay high while other pins stay low.
    Pin 4, 5, 6 and 7 in port B stay high while other pins stay low.
    120s
  • Q15
    Figure (1) shows L293D motor driver that is connected to port D in microcontroller. What is the appropriate output that should be sent to port D in order to the two motors move opposite each other?
    Question Image
    PORTD = B00000101;
    PORTD = B00000110;
    PORTD = B00001100;
    PORTD = B00001010;
    120s

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