FE Knowledge 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 FE Knowledge flashcards as text
Which of the following is the correct expression for the Laplace transform of a unit step function u(t)?
Answer: 1/s
The Laplace transform of the unit step function u(t) is 1/s.
A hollow cylindrical pressure vessel has an inner radius of 0.5 m, wall thickness of 25 mm, and internal pressure of 2 MPa. What is the hoop stress?
Answer: 40 MPa
Hoop stress σ_h = pr/t = (2×10⁶ × 0.5)/0.025 = 40 MPa.
In probability theory, two events A and B are independent if:
Answer: P(A ∩ B) = P(A) × P(B)
Events are independent when the joint probability equals the product of individual probabilities.
The First Law of Thermodynamics for a closed system states:
Answer: Change in internal energy equals heat added minus work done by system
ΔU = Q − W: the change in internal energy equals heat added to the system minus work done by the system.
Which type of structural analysis method satisfies both equilibrium and compatibility?
Answer: Exact (complete) structural analysis
A complete structural analysis satisfies equilibrium (statics), compatibility (geometry of deformation), and constitutive relations simultaneously.
The hydraulic radius of a circular pipe flowing full is:
Answer: D/4
Hydraulic radius R_h = A/P = (πD²/4)/(πD) = D/4.
An engineer receives a gift from a vendor whose company bids on the engineer's projects. According to NSPE Code of Ethics, the engineer should:
Answer: Decline the gift to avoid a conflict of interest
Engineers must avoid gifts from parties with a vested interest in their decisions to maintain objectivity and public trust.