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WorksheetsPOE Review 2
Total questions: 132
Worksheet time: 2hrs 43mins
A team of students designed a marble sorter to separate a total of 20 marbles into bins. (6 black, 6 blue, and 8 clear) into individual bins. After multiple trials, the students found that the percentage of each color that sorted correctly was as follows: 83% black, 67% blue, and 88% clear.
Given the trial results, what is the theoretical probability that all 20 marbles will be dropped into their corresponding bins during the next run?
1%
10%
48%
62%
Which manufacturing process was most likely used to create the water bottle?
Milling
Casting
Turning
Molding
Which diagram has the direction of the reaction forces correctly labeled, assuming all force magnitudes are correct in the given options?
Which point on the stress-strain curve is located in the elastic region?
Point A
Point B
Point C
Point D
Below are two examples of programs that have the same output when controlling a green and a blue LED. Analyze either of the programs. How long will the Blue LED be on?
8 sec
7 sec
6 sec
2 sec
A team of engineers has been assembled to design and create a renewable electrical energy generating and distribution system that utilizes wind, solar-electric, and fuel-cell energy conversion systems. The team just finished creating a decision matrix to compare the attributes of the various ideas. Which step from the design process is now occurring?
Evaluate solution
Generate Concepts
Develop a solution
Construct & test prototype
Which ammeter will display the highest current?
Which resource is a form of renewable energy?
Biomass
Coal
Natural Gas
Uranium
What type of simple machine is the shovel?
1st Class Lever
2nd Class Lever
3rd Class Lever
What type of simple machine is the shovel?
1st Class Lever
2nd Class Lever
3rd Class Lever
What type of simple machine is the shovel?
1st Class Lever
2nd Class Lever
3rd Class Lever
A design team completed the above decision matrix to evaluate their ideas.
Which idea should the team pick as a solution based solely on the decision matrix? Idea #2, since it has the lowest cost
Idea #2, since it has the lowest cost
Idea #4, since it has the least complex idea
Idea #3, since it has the highest decision matrix total
Idea #6, since it ranks highest on the decision matrix summary
Three students are designing a winch system. As part of the design process they find existing solutions, and identify why the solutions are not adequate or appropriate. Which step of the design process are the students completing?
Research & define the problem
Evaluate a Solution
Develop a Solution
Present Testing Results
An engineer must design a control panel for a wind turbine, given the following guidelines:
o Two warning lamps (L1 & L2) turn on when the turbine speed exceeds 5000 rpm (S1)
o If the current through either lamp is stopped (lamp burns out) the other lamp must still be able to illuminate
o The total current must not exceed 0.50 A
Which design satisfies all of the engineer’s design criteria?
when you increase torque?
The output gear has 48 teeth. The gear ratio is...
output=linear
output=reciprocating
output=rotary
Output=linear
Once we understand how to use technology, we can manage and control it for personal needs, wants and/or desires.
Technology education
Technological literate
This subject requires you to study of the natural world through observation, identification, description, experimental investigation, and theoretical explanations.
Chemistry
Technology
Science
Engineering
It is the “human innovation that involves the generation of knowledge and processes to develop systems that solve problems and extend human capabilities:
Technology.
Engineering.
It involves the knowledge of mathematical and natural
sciences gained by the study, experiences, and practices that are aligned with judgment and creativity to develop ways to utilize materials and forces of nature:
Technology.
Engineering.
Multiple Answers. Which of the following is the responsibility of an Engineer?
Development
Operation, Service, and Maintenance
Complex Analysis
Complex Design
Test and Evaluation
Multiple Answers. Which of the following is the responsibility of a Technologist?
Research
Routine Design
Manufacturing
Distribution and sales
Test and Evaluation
Multiple answers. Which two areas are performed by both Engineers and Technologists?
Development
Test and Evaluation
Production
Manufacturing
Which nonprofit, ISO 9001 certified organization accredits college and university programs in applied and natural science, computing, engineering and engineering technology?
ABET
OSHA
ASME
ASCE
Which specialty develops methods and systems that utilize nuclear materials for energy, medicine, and industry.
Petroleum Engineering
Nuclear Engineering
Materials Engineering
Chemical Engineering
Which specialty locates oil or natural gas reservoirs and design methods to extract and transport oil?
Petroleum Engineering
Mining and Geological Engineering
Marine and Ocean Engineering
Environmental Engineering
Which specialty research, develop, design, manufacture, and maintain devices that produce or consume power?
Materials Engineering
Industrial Engineering
Mechanical Engineering
Petroleum Engineering
Which specialty devises procedures and devices to improve medical conditions?
Chemical Engineering
Health and Safety Engineering
Chemical Engineering
Biomedical Engineering
Which specialty develops, process, and test materials to be used to fulfill a specific design purpose?
Industrial Engineering
Health and Safety Engineering
Materials Engineering
Mechanical Engineering
Which specialty solves environmental problems related to pollution, water use, materials and energy use, waste treatment, etc.
Marine and Ocean Engineering
Environmental Engineering
Mining and Geological Engineering
Petroleum Engineering
Which specialty plans the most effective, efficient ways to build structures, lay out production facilities, run organizations, transport goods, etc.?
Mechanical Engineering
Architectural Engineering
Health and Safety Engineering
Industrial Engineering
Which specialty designs, develop, and test the manufacture of electrical equipment and large-scale electrical systems.
Electrical Engineering
Chemical Engineering
Industrial Engineering
Electronic Engineering
Which specialty designs, develop, and test small electronic systems, such as appliances, telephones, and surgical devices.
Electrical Engineering
Indusutrial Engineering
Electronic Engineering
Chemical Engineering
Which specialty addresses issues related to chemical production, transformation of raw materials, and chemical use.
Biomedical Engineering
Health and Safety Engineering
Chemical Engineering
Petroleum Engineering
Which specialty plans the design, construction, and maintenance of various civil structures.
Industrial Engineering
Civil Engineering
Mechanical Engineering
Materials engineering
Which specialty creates technology to advance food, biological, irrigation, and machinery systems.
Agricultural Engineering
Chemical Engineering
Environmental Engineering
Biomedical Engineering
It is an agreement between the engineer and the client:
design statement.
problem statement.
design brief.
design process.
It is used as a standard for assessing a solution's validity at any point in the development process:
design statement.
problem statement.
design brief.
design process.
It clearly and concisely identify a client's or target consumer's problem, need or want:
design process.
problem statement.
design brief.
design statement.
It identifies a situation in need of remedy, but not require a person to act is called:
a problem.
a challenge.
A systematic problem-solving method for generating and developing ideas into solutions is called:
a design challenge.
a design brief.
a design statement.
a design process.
A method designed to generate ideas is called:
research.
brainstorming.
designing.
development.
It involves sketching out numerous ideas, sharing, and explaining them on the spur of the moment without judgement:
brainstorming.
development.
research.
designing.
Studying both materials and sources in order to establish facts in order to develop new conclusions is called:
designing.
brainstorming.
research.
development.
It is believed creative ideas derive from the mind's ability to recognize patterns and previous knowledge and recalled experiences stored in the brain.
False.
True.
It involves gathering and sifting through preexisting information suck as books, patents, professional journals, periodicals, etc.:
secondary research.
primary research.
It involves generating original information through interviews, surveys, experiments and observations:
primary research.
secondary research.
Which method provides the most useful information for developing creative ideas?
primary research.
secondary research.
Specific standards against which a design will be judged acceptable or unacceptable is called:
criteria.
constraint.
A general limit that is imposed on a design project such as a project deadline, a budget, materials, or manufacturing processes is called:
constraint.
criteria.
Designers use it to quantify their opinions of two or more design ideas by assessing each idea according to a series of important considerations is called:
design process.
decision matrix.
design proposal.
decision probability.
Group brainstorming yields better ideas because 100% of each participant's attention is focused on generating ideas based collaborating with others.
True
False
A detailed three-dimensional representation of a design that is used to communicate, explore, or test and idea is called:
a model.
a prototype.
A three-dimensional working model of solution that is developed for testing purposes is called:
a model.
a prototype.
Lamar Gant, U.S. powerlifting star, became the first man to deadlift five times his own body weight in 1985. Deadlifting involves raising a loaded barbell from the floor to the level of the hips with outstretched arms. Determine the work done by Lamar in deadlifting 300 kg to a height of 0.90 m above the ground (W=Fd).
270 J
2646 J
333 J
3.00X10-3 J
45 J of work were done on the object that moved 5 meters. How much force was applied to the object?
8 N
225 N
9 N
0 N
Wind turbines and hydroelectric energy make electricity by converting what type of energy into electrical energy?
chemical
mechanical
heat
nuclear
The law of energy conservation says the total energy before a process _______ the total energy after it
is less than
is more than
affects
equals
Energy Efficiency is calculated by useful energy (Energy Out) divided by energy consumed (Energy In) , expressed as a percentage
False
True
How much energy is wasted by a machine if the energy consumed (input) is 263 J and the useful energy (output) is 142 J?
405 J
395 J
121 J
1.85 J
What is the efficiency of the machine if the input (energy consumed) is 263 J and the output (useful energy) is 142 J?
6.26%
54%
100%
260%
The SI unit of power is...
British thermal unit (BTU)
horsepower
joules
watts
Maximum motor power is available...
at half stall torque
when load speed equals zero
at maximum linear speed
when torque is maximized
The equation for motor power is
P = τω
P = IV
P = V/R
P = W/t
How is power affected by voltage?
Voltage does not affect power
Higher voltage = lower power
Higher voltage = higher power
Lower voltage = higher power
Motor speed is the fastest at...
half stall torque
no load speed
half stall speed
stall torque
What gear ratio is most appropriate for a motor that must apply 0.5 lb-in of torque with a maximum power at 2 lb-in of torque?
1:2
1:0.25
1:4
1:0.5
The SENSE of a Vector is
indicated by the length of the line
has magnitude & direction
indicated by the direction of the arrow
a twisting effort about a point when a force is applied
If a structure is statically determinate it
is mathematically solvable
cannot be disfigured
can handle large forces
will break easily
Tension force on a member causes it to
twist
break
stretch
squeeze together
Scalars have
magnitude & direction
sense & direction
neither magnitude nor direction
magnitude only
For every action there is an equal and opposite reaction
Newton's 3rd Law
Newton's 2nd Law
Newton's 1st Law
Murphy's Law
Statics is
when forces act on a body at rest
study of forces & effects on systems in uniform motion
the same as Center of Mass
A twisting effort about a point when a force is applied
A mathematical property of a cross section (measured in in^^4) that gives important information about how the cross-sectional area is distributed about a centroidal axis
Modulus of Elasticity
Moment of Inertia
Centroid
Moment
A mathematical property of a cross section (measured in in^^4) that gives important information about how the cross-sectional area is distributed about a centroidal axis
Modulus of Elasticity
Moment of Inertia
Centroid
Moment
Supplies one reaction force, perpendicular to a surface in a truss
Node
Member
Roller
Pin
The total power range (speed) that can be used in ROBOTC with the Vex 393 motors is?
-127 to 0
-127 to 127
0 to 127
127 to 0
All of these are digital sensors except?
light sensor
shaft encoder
bump switch
ultrasonic range finder
This control structure allows for a section of code to be continuously repeated.
While
Else
Do
If
The creation of a product process or service for the first time
innovation
epiphany
invention
The improvement of an existing product, process or service.
invention
epiphany
novel
innovation
