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WorksheetsElectrical Engineering Review
Total questions: 30
Worksheet time: 15mins
Where is electric charge located?
In the empty space within atoms
In the area surrounding atoms
In the bonds between atoms
In the particles that make up atoms
What causes all forms of electricity?
A battery that provides energy
The movement of protons
The movement of electrons
A battery that separates particles in atoms
How is a charged object able to move other objects from a distance?
It becomes a battery, supplying electrical energy
It becomes a magnet with a north and south pole
It attracts or repels other objects with its electric field
It sends or receives electrons from other objects
In what way is current electricity like a river?
In both cases, energy is carried by water
Electricity wears down metal, like water wears down rock
Electrons flow through a pathway, like water in a river
The flow of both electrons and water is controlled by gravity
What are electrons?
Negatively charged subatomic particles
Positively charged subatomic particles
Neutrally-charged subatomic particles
Negatively charged atoms
Why is static electricity not useful as a power source?
Because electrons aren't transferred in bursts of static electricity.
Because all energy is released at once in static electricity.
Because static electricity is not a real form of electricity.
Because static electricity only occurs in lightning.
How does rubber differ from most metals?
Rubber is a good conductor; most metals are good insulators.
Rubber conducts electrons; most metals conduct protons.
Rubber is a good insulator; most metals are good conductors.
Rubber is a good power source; most metals are good conductors.
What device opens and closes an electric circuit?
A switch
A power source
A load
A current
What type of robot is programmed to perform tasks using an onboard computer or controller?
Autonomous
Tethered
Remote control
When Machines control machines, it is called _____
local control
control system
machine operation
automation
Computers use the _____ number system to count.
base 10
numeric
binary
base 100
What devices convert non-electrical conditions into electrical values?
transducers
motors
grippers
microcontrollers
What devices convert input signals into mechanical, light, heat, or sound energy?
transducers
motors
grippers
microcontrollers
An ordered set of instructions that control machine operation is called _____.
an operation manual
machine rules
autonomous rules
a computer program
_____ is an area of research derived from combining mechanical engineering, electrical engineering, computer engineering, and computer science.
Programming
Mechatronics
Automation
Thermodynamics
An electric circuit exists when we can create a path that allows _____ to flow.
electrons
plasma
protons
gremlins
In an electric circuit, the source of electricity will want to push electrons at a certain pressure. _____ is a measure of this pressure.
Resistance
Amperage
Capacity
Voltage
In an electrical circuit, the number of electrons in motion is called the _____ or current.
Resistance
Amperage
Capacity
Voltage
Which of the following statements most accurately describes the circuit?
The Leonardo microcontroller will push 5V from pin 13.
The resistor drops the voltage from 5V to 3V so that the LED does not overheat.
Electrons flow through the closed circuit causing the LED to light.
All of the other choices.
The _____ programming command is used to set the value (HIGH or LOW) of a digital pin.
delay
pinMode
digitalWrite
int
The _____ programming command instructs the program to wait for a specified amount of time.
delay
pinMode
digitalWrite
int
To turn the LED on for two seconds, and then off for two seconds, you would need to replace delay(1000) (see lines 9 and 11 in the program above) with _____.
delay(2s)
delay(2000)
wait(2000)
wait(2s)
Which of these statements most accurately describes what happens when the switch is pushed?
Electricity will flow from ground (GND), through the resistor and switch, and finally into pin 2 on Leonardo microcontroller.
Electricity will flow from the 5V POWER pin on the Leonardo microcontroller, through the switch, and then into pin 2 on the Leonardo microcontroller.
Electricity will flow from pin 2 on Leonardo microcontroller, through the switch, and then into the 5V POWER pin on the Leonardo microcontroller.
Electricity will flow from pin 2 on Leonardo microcontroller, through the switch and resistor, and finally to ground (GND).
In the new circuit, pin 2 is defined as a/an _____.
OUTPUT
THROUGHPUT
INPUT
DIGITAL PIN
The _____ programming command is used to read the value (HIGH or LOW) of a digital pin.
digitalRead
pinMode
digitalWrite
int
The _____ statement allows you to make something happen (or not) depending on whether a given condition is true (or not).
digitalRead
digitalWrite
if
pinMode
Which of the following most accurately describes the purpose of line 13 in the program?
A. Read the value of the variable sw_Read, then stop the program.
B. If pin 2 is HIGH (button pushed), execute the group of commands that follow.
C. Read the value of the variable sw_Read, then execute the group of commands that follow.
D. If pin 2 is HIGH (button pushed), stop the program.
A motor controller controls the _____ and _____ of the motors.
charge, state
speed, direction
voltage, amperage
voltage, capacity
Which of the following most accurately describes what happens when lines 23 through 26 in the program are executed?
Both motors move forward.
Both motors stop.
Motor 1 moves forward.
Both motors move in reverse.
Which of the following most accurately describes what happens when lines 28 through 31 in the program are executed?
Both motors move forward.
Both motors stop.
Motor 1 moves forward.
Both motors move in reverse.
