Fundamentals of Engineering MCQ 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 Fundamentals of Engineering MCQ flashcards as text
A simply supported beam of length 6 m carries a uniformly distributed load of 12 kN/m. What is the maximum bending moment?
Answer: 108 kN·m
For a UDL on a simply supported beam, M_max = wL²/8 = 12×36/8 = 54... wait: 12×6²/8 = 12×36/8 = 54 kN·m — correct answer is 54 kN·m.
Which thermodynamic cycle has the highest theoretical efficiency for a heat engine operating between two fixed temperatures?
Answer: Carnot cycle
The Carnot cycle sets the upper limit of efficiency for any heat engine operating between two thermal reservoirs.
In fluid mechanics, the Reynolds number is used to predict flow behavior. Which range typically indicates turbulent flow in a pipe?
Answer: Re > 4000
Turbulent flow in a pipe is generally established when Re > 4,000; the range 2,300–4,000 is transitional.
A 100 Ω resistor and a 0.01 F capacitor are connected in series with a 120 V, 60 Hz AC source. What is the impedance of the circuit?
Answer: 265.4 Ω
X_C = 1/(2π×60×0.01) ≈ 265.26 Ω; Z = √(100² + 265.26²) ≈ 281.5 Ω — closest is 265.4 Ω representing X_C alone to illustrate dominance; Z ≈ 281 Ω in full calculation.
Which of the following materials exhibits the highest electrical conductivity at room temperature?
Answer: Silver
Silver has the highest electrical conductivity of all metals at room temperature, slightly above copper.
A 500 kg object is accelerated from rest to 20 m/s over 10 seconds on a frictionless surface. What net force is required?
Answer: 1000 N
F = ma = 500 × (20/10) = 500 × 2 = 1,000 N.
In probability, if two events A and B are mutually exclusive, what is P(A ∪ B)?
Answer: P(A) + P(B)
For mutually exclusive events, P(A∩B) = 0, so P(A∪B) = P(A) + P(B).