WorksheetsEngineering Concepts Quiz: praxis
Total questions: 20
Worksheet time: 10mins
A cantilever beam is best described as:
A beam supported at both ends
A beam fixed at one end and free at the other
A beam with a roller support
A beam supported by a cable
In a truss bridge, members that carry only axial forces (tension or compression) are idealized as:
Beams
Columns
Truss members (two-force members)
Shell elements
Which of the following is not part of a gas turbine (jet engine) cycle?
Compression
Combustion
Expansion
Regeneration (unless specifically included)
Ohm’s Law in DC circuits is:
V = I × R
V = R × I²
V = I / R
V = R / I
What does a buck converter do?
Converts AC to DC
Steps up voltage
Steps down voltage
Converts DC to AC
What is the formula for resistance in an electrical circuit?
R = V / I
R = I × V
R = V + I
R = I / V
What is the main purpose of a buck converter?
Step up voltage
Step down voltage
Convert DC to AC
Convert AC to DC
What does the formula I = R / V represent?
Current
Resistance
Voltage
Power
The term "affordance" in design refers to:
The cost of manufacturing
The strength of materials
The perceived and actual properties of an object that determine how it could be used
The marketing appeal
In an HVAC (heating, ventilation, and air conditioning) system, latent heat is associated with:
Change in temperature
Change in phase (e.g., condensation or evaporation)
Heat lost to conduction
Frictional heating
What does the conservation of energy principle state?
Energy is neither created nor destroyed
Energy can be created but not destroyed
Energy can be destroyed but not created
Energy is always lost during transformation
What type of load do truss members ideally carry?
Shear loads
Torsional loads
Axial loads (tension/compression)
Bending loads
What is the standard behavior of gas turbines regarding regeneration?
Regeneration is always standard in all gas turbines
Regeneration is standard only in small gas turbines
Regeneration is standard only in large gas turbines
Regeneration is not standard in all gas turbines unless designed
What does elastic modulus (or Young's modulus) describe?
Plastic behavior
Magnetic behavior
Elastic behavior
Thermal behavior
What is the significance of Young's modulus in material science?
It measures thermal conductivity
It measures magnetic properties
It measures elasticity
It measures plasticity
What does the term "affordance" help designers understand?
Cost of production
Strength of materials
How objects can be used based on their properties
Marketing strategies
What is required for safe operation in engineering processes?
Automation and robotics.
Supervision and instruction; no unauthorized use.
High-speed machinery.
Advanced technology.
What does emergent behavior arise from?
Individual actions.
Many interactions (e.g., traffic jam).
Random events.
External forces.
What does TPACK stand for?
Technology, Pedagogy, and Content Knowledge.
Teaching, Planning, and Content Knowledge.
Technology, Practice, and Curriculum Knowledge.
Teaching, Pedagogy, and Curriculum Knowledge.
What is the primary purpose of additive manufacturing?
To reduce production costs.
To enable complex geometries and design flexibility.
To increase production speed.
To simplify manufacturing processes.
