Arduino - Sensors - Actuators

The amplitude in an analog signal has a constant value

• True

• False

A PWM Signal is generated using Analog pulses

• True

• False

In a PWM signal the frequency =

• 1 / Voltage

• 1 * Time

• 1 / Time

• Time / 1

The duty cycle in a PWM signal is

• The percentage of ON time over the time period

• The percentage of OFF time over the time period

• The total (ON and OFF) time over the time period

• None of the above

The PWM pins in an Arduino board are found in the analog pins

• True

• False

All electric currents produces a magnetic field

• True
• False

Sensors can give instructions to output devices

• True

• False

Needed so the computer can understand analogue sensor readings

• Digital to analogue converter (DAC)

• Analogue to digital converter (ADC)

• Sensor to digital conversion (SDC)

• Digital compression (DC)

Microcontrollers “listen” to sensors and “talk” to actuators. They decide what to do based on a set of instructions (program) that you write.

• True

• False

What does PWM stand for?

• Pulse Width Modulation

• Power Width Motion

• Pulse Wave Modulation

• Power Wave Modulation