Fundamentals of Engineering (FE) Electrical and Computer Questions And Correct Answers (Verified Answers) Plus Rationales 2025/2026 Q&A | Instant Download Pdf

Fundamentals of Engineering (FE) Electrical and
Computer Questions And Correct Answers
(Verified Answers) Plus Rationales 2025/2026
Q&A | Instant Download Pdf
1. Ohm’s Law states that voltage equals:
A. IR
B. I/R
C. R/I
D. I²R
Answer: A
Rationale: Ohm’s Law states V = IR.


2. The SI unit of capacitance is:
A. Henry
B. Farad
C. Ohm
D. Tesla
Answer: B
Rationale: Capacitance is measured in farads (F).


3. The RMS value of a sinusoidal voltage with peak 170 V is approximately:
A. 170 V
B. 120 V
C. 85 V
D. 240 V
Answer: B
Rationale: Vrms = Vpeak/√2 = 170/1.414 ≈ 120 V.


4. The impedance of an inductor is:

,A. 1/jωL
B. jωL
C. jωC
D. 1/jωC
Answer: B
Rationale: Inductive impedance ZL = jωL.


5. Kirchhoff’s Current Law is based on conservation of:
A. Energy
B. Charge
C. Power
D. Momentum
Answer: B
Rationale: KCL follows conservation of electric charge.


6. The power factor of a purely resistive load is:
A. 0
B. 0.5
C. 1
D. -1
Answer: C
Rationale: Voltage and current are in phase in a pure resistor.


7. The derivative of sin(ωt) is:
A. cos(ωt)
B. -cos(ωt)
C. ωcos(ωt)
D. -ωcos(ωt)
Answer: C
Rationale: d/dt[sin(ωt)] = ωcos(ωt).

, 8. A system is linear if it satisfies:
A. Stability
B. Causality
C. Superposition
D. Periodicity
Answer: C
Rationale: Linearity requires superposition (additivity and homogeneity).


9. The Laplace transform of 1 is:
A. 1/s
B. s
C. 1/s²
D. e^-s
Answer: A
Rationale: L{1} = 1/s.


10. The time constant of an RC circuit is:
A. R/C
B. RC
C. L/R
D. 1/RC
Answer: B
Rationale: τ = RC.


11. In a balanced three-phase system, total power equals:
A. 3VLIL
B. √3 VLIL cosφ
C. VLIL cosφ
D. 3VPIP
Answer: B
Rationale: Total real power = √3 VL IL cosφ.