Fundamentals of Engineering FE Knowledge 2

Question 1

A simply supported beam of length 10 m carries a uniformly distributed load of 5 kN/m. What is the maximum bending moment?

Accepted Answer

62.5 kN·m

Answer

Maximum bending moment for a UDL on a simply supported beam is wL²/8 = 5×100/8 = 62.5 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 bound on efficiency for any heat engine operating between two temperature reservoirs.

Question 3

In an AC circuit, the power factor is defined as:

Accepted Answer

Real power divided by apparent power

Answer

Power factor = P/S = cos(θ), where P is real power and S is apparent power.

Question 4

A fluid with a dynamic viscosity of 0.001 Pa·s flows between two parallel plates 1 mm apart; the top plate moves at 1 m/s. What is the shear stress?

Accepted Answer

1 Pa

Answer

Shear stress τ = μ(du/dy) = 0.001 × (1/0.001) = 1 Pa.

Question 5

The present worth of $10,000 received 5 years from now at a 6% annual interest rate is approximately:

Accepted Answer

$7,473

Answer

PW = F/(1+i)^n = 10,000/1.06^5 = 10,000/1.3382 ≈ $7,473.

Fundamentals of Engineering Practice Test