Basic Flashcards
7 cards from real Fundamentals of Engineering practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Basic flashcards as text
What is the moment of inertia used to analyze?
Answer: Resistance to rotational acceleration
Moment of inertia (I) is the rotational analog of mass, measuring how difficult it is to change an object's rotational motion.
A beam is in static equilibrium. Which two conditions must be satisfied?
Answer: ΣF = 0 and ΣM = 0
Static equilibrium requires that the sum of all forces and the sum of all moments about any point each equal zero.
Which type of stress acts perpendicular to the cross-sectional area of a member?
Answer: Normal (axial) stress
Normal (axial) stress σ = F/A is the stress component acting perpendicular to the cross-sectional plane.
Young's modulus (E) relates stress to:
Answer: Strain
Young's modulus is the ratio of normal stress to normal strain: E = σ/ε.
Which programming construct allows a block of code to repeat until a condition is false?
Answer: Loop (while/for)
Loop structures (while, for, do-while) repeatedly execute a code block as long as the specified condition remains true.
In fluid mechanics, Reynolds number is used to predict:
Answer: Flow regime (laminar vs. turbulent)
Reynolds number Re = ρVD/μ characterizes whether flow will be laminar (low Re) or turbulent (high Re).
What does the derivative dy/dx represent geometrically?
Answer: The slope of the tangent line to the curve y = f(x)
The derivative dy/dx gives the instantaneous rate of change, which equals the slope of the tangent line at a given point.