Fundamentals of Engineering Fundamentals of Engineering MCQ 2

Question 1

A simply supported beam of length 6 m carries a uniformly distributed load of 12 kN/m. What is the maximum bending moment?

Accepted Answer

108 kN·m

Answer

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.

Question 2

Which thermodynamic cycle has the highest theoretical efficiency for a heat engine operating between two fixed temperatures?

Accepted Answer

Carnot cycle

Answer

The Carnot cycle sets the upper limit of efficiency for any heat engine operating between two thermal reservoirs.

Question 3

In fluid mechanics, the Reynolds number is used to predict flow behavior. Which range typically indicates turbulent flow in a pipe?

Accepted Answer

Re > 4000

Answer

Turbulent flow in a pipe is generally established when Re > 4,000; the range 2,300–4,000 is transitional.

Question 4

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?

Accepted Answer

265.4 Ω

Answer

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.

Question 5

Which of the following materials exhibits the highest electrical conductivity at room temperature?

Accepted Answer

Silver

Answer

Silver has the highest electrical conductivity of all metals at room temperature, slightly above copper.

Fundamentals of Engineering Practice Test

Fundamentals of Engineering Practice Test

Fundamentals of Engineering Fundamentals of Engineering MCQ 2