Microcontroller System Quiz: PWM & Motor Control

What type of motor is controlled using pulse-width modulation (PWM)?

• Induction motor

• Stepper motor

• AC motor

• DC motor

What is the function of the H-bridge circuit in motor control?

• To convert AC to DC

• To regulate voltage and current flow

• To increase voltage

• To decrease speed

Which motor is best suited for applications requiring precise positioning?

• DC motor

• Servo motor

• Induction motor

• Stepper motor

What does the setup() function in Arduino code typically configure?

• Motor speed

• Input and output pins

• PWM frequency

• Serial communication

In the context of controlling a DC motor, what does the term 'switchState' refer to?

• The state of the motor

• The state of the push switch

• The state of the Arduino

• The state of the power supply

Which library is used to control the 28BYJ-48 stepper motor?

• Motor.h

• PWM.h

• Servo.h

• Stepper.h

What is the maximum angle range for the SG90 servo motor?

• 0 to 360 degrees

• 90 to 180 degrees

• 0 to 180 degrees

• 0 to 90 degrees

What is the role of the delay() function in the servo motor control code?

• To pause execution for a specified time

• To increase speed

• To initialize the motor

• To read input values

How does the code determine the position of the servo motor?

• By measuring voltage

• By reading the switch state

• By sending a PWM signal

• By using a potentiometer

What is the purpose of the map() function in the second code example?

• To map the potentiometer value to a range

• To map the switch state to a range

• To map the angle to a range

• To map the motor speed to a range