Mechatronics 2 test #1

Are small lights that let electricity flow in one direction.

• resistor

• light

• LEDs

• photoresistor

LEDs can burn out if too much electricity goes through them. So, you should always use a _________ to limit the current when you place an LED in a circuit.

• polarized

• resistor

• analog

• photoresistor

LEDs have a positive leg and a negative leg. They are therefore considered to be _________ and can only be connected in a circuit in one direction.

• polarized

• magnetic

• on

• variable

When using code in Arduino IDE, the statement: delay(2000); will cause the program to wait for _____ seconds.

• 50

• 200

• 2000

• 2

The statement: digital Write (13, HIGH); will cause the LED to ______.

• turn on

• turn off

• break

• burn out

The statement: digital Write (13, LOW); will cause the LED to ______.

• turn on

• turn off

• break

• burn out

In question 5 and 6 above, what does the number 13 represent?

• pin

• wire

• gnd

• voltage

A poteniometer is a ___________ resistor

• common

• ohm

• variable

• troubled

___________ signals have a wide range of values, but ____________ signals have limited values, typically on or off (or high/low).

• analog, wireless

• digital, analog

• analog, digital

• wireless, analog

A _______ is a light-sensitive variable resistor. As more light shines on it, its resistants __________.

• Photoresistor, increase

• photoresistor, decrease

• decrease, photoresistor

• cheese, pizza