Arduino PWM: Pulse Width Modulation

What does PWM stand for? (0:25)

•    a) Pulse Width Modulation

     

• b) Power Wave Management

    

•  c) Programmable Waveform Mechanism

•    d) Periodic Wave Manipulation

In PWM, what does the duty cycle represent?

•    a) The total time period of the pulse

     

• b) The percentage of the period when the pulse is at 5 volts

     

• c) The frequency of the pulse train

   

•   d) The time between two consecutive pulses

What is the range of values for the analog write function parameter in Arduino?

•    a) 0 to 100

     

• b) 0 to 1023

   

•   c) 0 to 255

     

• d) -255 to 255

If the argument of the analog write function is 127, what will be the duty cycle?

   

• a) 25%

     

• b) 50%

     

• c) 75%

     

• d) 100%

In the example circuit shown in the video, which component is connected between the LED's cathode and the ground pin?

 

•   a) Capacitor

   

•   b) Inductor

   

•   c) Resistor

    

•  d) Diode

What function is used to set the PWM pin as an output in the setup() function?

•    a) pinMode()

    

•  b) digitalWrite()

     

• c) analogWrite()

   

•   d) setPWM()