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WorksheetsGTT 2nd Semester Exam Review
Total questions: 85
Worksheet time: 43mins
Name
Class
Date
1.
What is a device that allows current to flow in only one direction?
a)
component
b)
diode
c)
resistor
d)
lamp
2.
A group of interrelated components designed collectively to achieve a desired goal.
a)
system
b)
input
c)
process
d)
output
3.
The desired result of a system
a)
process
b)
input
c)
output
d)
resources
4.
The action part of a system
a)
resources
b)
input
c)
output
d)
process
5.
The actual result of a system
a)
resources
b)
input
c)
output
d)
process
6.
All systems include what 3 things?
a. input
b. output
c. process
d. resources
a. input
b. output
c. process
d. resources
a)
a, b, c
b)
b, c, d
c)
c, d, a
d)
d, a, b
7.
Which of the following are resources?
a)
information
b)
wealth
c)
revenue
d)
all of these are resources
8.
a)
1100+/- 5%
b)
4700 +/- 5%
c)
2800 +/- 5%
d)
4700 +/- 10%
9.
What does this symbolize?
a)
resistor
b)
LED
c)
capacitor
d)
battery
10.
What does this symbolize?
a)
resistor
b)
LED
c)
capacitor
d)
battery
11.
Electron flow theory states that electrons flow from ...
a)
negative to positive
b)
positive
12.
What type of circuit is represented here?
a)
series
b)
parallel
c)
combination
13.
What type of circuit is this?
a)
series
b)
parallel
c)
combination
14.
Which band of the resistor is the multiplier
a)
1
b)
2
c)
3
d)
4
15.
Who discovered the mathematical relationship between current, voltage and resistance?
a)
Isaac Newton
b)
Georg Ohm
c)
Albert Einstein
d)
Alfred Nobel
16.
How much current is in a circuit that includes a 9-volt battery and a bulb with a resistance of 3 ohms?
a)
3 amps
b)
27 amps
c)
.3 amps
d)
3 volts
17.
What is the voltage of a circuit with 15 amps of current and a toaster with 8 ohms of resistance?
a)
2 volts
b)
.5 volts
c)
120 volts
d)
120 ohms
18.
What is an electrical device that can store an electrical charge?
a)
capacitor
b)
resistor
c)
diode
d)
a/c power source
19.
ALL technological systems need _____ resources
a)
1
b)
3
c)
5
d)
7
20.
What type of system can monitor and adjust itself?
a)
open
b)
closed
21.
Which is the drive gear?
a)
a
b)
b
22.
What type of gear is this?
a)
rack and pinion
b)
bevel
c)
worm and wheel
d)
chain
23.
What type of gear is this?
a)
rack and pinion
b)
beve
c)
worm and wheel
d)
chain
24.
Is this an open or closed loop system?
a)
open
b)
closed
25.
What type of motion is shown here?
a)
linear
b)
reciprocating
c)
oscillating
d)
rotary
26.
What type of motion is shown here?
a)
reciprocating
b)
oscillating
c)
circular
d)
linear
27.
What is force in a circular motion called?
a)
force
b)
torque
28.
Pneumatics is to ___ as hydraulics is to ____
a)
water, air
b)
air, water
29.
What is the purpose of an idler gear?
a)
change the gear ratio
b)
change the speed of the output gear
c)
change the direction of the output gear
d)
change the direction of the input gear
30.
what is the "brain" of the vex robot?
a)
cpu
b)
gear train
c)
cortex
d)
program
31.
Which of the following is a touch sensor?
a)
line follower
b)
limit switch
c)
potentiometer
d)
all of these
32.
What sensors detect the presence or absence of an object within a specific distance
a)
proximity
b)
visual
c)
light
d)
temperature
33.
What sensor detects movement from a fixed distance?
a)
speed
b)
displacement
c)
sound
d)
proximity
34.
Psuedocode is the final code
a)
true
b)
false
35.
A photovoltaic sensor is a type of _____ sensor
a)
sound
b)
visual
c)
light
d)
speed
36.
What combination will give the most torque?
a)
small input --> medium output
b)
large input --> medium output
c)
small input --> large output
d)
large input --> small output
37.
What combination will give the most speed?
a)
large input --> small output
b)
small input --> large output
c)
large input --> medium output
d)
small input --> medium output
38.
Which of the following indicates a multi-line comment in RobotC?
a)
//
b)
{...}
c)
/*,......*/
d)
[.....]
39.
What must you set up if you want your program to work.
a)
motors and sensors
b)
psuedocode
c)
actual code
40.
What language did we use in RobotC
a)
VEX PIC
b)
Natural Language (VEX PIC)
c)
VEX Cortex
d)
Natural Language (VEX Cortex)
41.
What robot behaviors do you use for psuedocode?
a)
complex
b)
simple
c)
basic
42.
what gear ratio has an input gear 8 times larger than the output gear?
a)
1:8
b)
8:1
43.
This involves a mechanical device that can imitate the actions of people or animals.
a)
automation
b)
robotics
44.
What is smallest piece of an element that contains all teh properites of that element?
a)
atom
b)
element
c)
nucleus
d)
protons
45.
The atomic number tells you the number of
a)
protons
b)
neutrons
c)
protons & neutrons
d)
protons OR electrons
46.
What are the positively charged particles of an atom?
a)
protons
b)
neutrons
c)
electrons
47.
What are the neutrally charged particles of an atom?
a)
protons
b)
neutrons
c)
electrons
48.
What are the negatively charged particles of an atom?
a)
proton
b)
neutron
c)
electron
49.
Electrons will stay in the ____ energy level possible
a)
highest
b)
lowest
50.
Which orbital holds 2 electrons?
a)
s
b)
p
c)
d
d)
f
51.
Which electron orbital holds 6 electrons?
a)
s
b)
p
c)
d
d)
f
52.
Electrons MUST fill an energy level before going on to the higher energy level
a)
true
b)
false
53.
The ability to "steal" electrons is called
a)
electron affinity
b)
electronegativity
c)
theft
54.
What is the simplest form of matter?
a)
atom
b)
element
c)
electrons
d)
neutrons
55.
The first machines were built about 300 years ago
a)
true
b)
false
56.
Which type of robot is most likely to be used by the military
a)
household
b)
exploratory
c)
industrial
d)
none of these
57.
What involves the design, construction, and operation of a robot?
a)
automation
b)
robotics
58.
A robot is a machine that performs complicated tasks.
a)
true
b)
false
59.
Puppets are not considered machines
a)
true
b)
false
60.
First generation robots were designed to perform
a)
factory work
b)
complex tasks
c)
surgery
d)
housework
61.
Second generation robots can sense and respond to changes in their environment.
a)
true
b)
false
62.
Robots are used for which of the following
a)
precision work
b)
monotonous work
c)
dangerous work
d)
all of these jobs
63.
What type of robot would perform factory jobs such as welding, painting, and assembly?
a)
industrial
b)
assistive
c)
medical
d)
household
64.
Which of the following are properties of conductors?
a)
electrons flow easily
b)
1-3 valence electrons
c)
low electronegativity
d)
all of these
65.
What type of material has 4 valence electrons, and is needed for transistors and microchips?
a)
conductors
b)
insulators
c)
semi-conductors
66.
Which is the correct path electricity takes from the power plant to your house?
a)
step down transformer, tower, junction box, step up transformer
b)
, tower, junction box, step up transformer, step down transformer
c)
step up transformer, tower, junction box, step down transformer
d)
step up transformer, towers, step down transformer, junction box
67.
Decreased voltage makes for more efficient transmission of electricity.
a)
true
b)
false
68.
What is a system of conductors and components forming a complete path for an electric current?
a)
circuit
b)
conduit
c)
current
d)
diode
69.
Which of the following is an important part of a circuit?
a)
a source of electrons
b)
a pathway for electrons
c)
a load device
d)
all of these are important
70.
What does this symbol represent
a)
diode
b)
lamp
c)
switch
d)
battery
71.
What does this symbol represent?
a)
lamp
b)
switch
c)
wire
d)
battery
72.
Why won't this circuit work?
a)
no power source
b)
broken circuit
c)
open switch
d)
too much resistance
73.
What does this symbolize?
a)
diode
b)
battery
c)
lamp
d)
switch
74.
What device converts mechanical energy to electrical energy?
a)
motor
b)
generator
c)
electromagnet
d)
inverter
75.
What device is used to convert electrical energy into mechanical energy?
a)
motor
b)
generator
c)
electromagnet
d)
inverter
76.
A device whose ends change between north and south depending on the direction of the current?
a)
electromagneet
b)
generator
c)
bar magnet
d)
motor
77.
A multimeter is an instrument for measuring the properties on an electrical circuit.
a)
true
b)
false
78.
What is the continuous flow of electrons through a component or a circuit.
a)
ranging
b)
current
c)
resistance
d)
voltage
79.
Which of the following is measured in amps?
a)
current
b)
voltage
c)
resistance
80.
Which of the following is measured in volts?
a)
current
b)
voltage
c)
resistance
81.
Which of the following is measured in Ohms?
a)
current
b)
voltage
c)
resistance
82.
Which is an example of static electricity?
a)
lightning
b)
generators
c)
batteries
83.
Who first suggested that opposite charges will attract and like charges will repel?
a)
Thomas Edison
b)
Benjamin Franklin
c)
Albert Einstein
84.
Which of the following is a semi-conductor?
a)
carbon
b)
germanium
c)
silicon
d)
all of the above
85.
The Earth is a large magnet
a)
true
b)
false
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