Free Practice Questions for NEC Electrical Engineering

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Key Facts: NEC Electrical Engineering Exam

100 MCQs

Total Questions (1 mark each)

NEC exam procedure, 2082

2 hours

Exam Duration

NEC exam procedure, 2082

50%

Pass Mark

NEC exam procedure, 2082

NPR 2,500

Exam Fee (double if late)

NEC notice, 2083/05/16

10 Chapters

Syllabus Structure (10 questions each)

NEC AElE syllabus

NPR 5,000

Registration Fee After Passing

NEC Regulations, 2057 (Rule 8)

Electrical engineering graduates in Nepal must pass the Nepal Engineering Council registration exam before they can practise. The AElE paper has 100 one-mark multiple-choice questions in 2 hours, 10 from each syllabus chapter, and the pass mark is 50%. The exam fee is NPR 2,500 (double in the late-application window), and passing candidates pay NPR 5,000 to be registered.

Sample NEC Electrical Engineering Practice Questions

Try these sample questions to review concepts for the NEC Electrical Engineering exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 101+ question experience with AI tutoring.

1A 24 V ideal battery supplies two resistors in parallel, R1 = 12 Ω and R2 = 6 Ω. What total current does the battery deliver?

A.6 A

B.2 A

C.4 A

D.8 A

Explanation: Req = (12 × 6)/(12 + 6) = 4 Ω, so I = 24/4 = 6 A. As a check, the branch currents are 24/12 = 2 A and 24/6 = 4 A, which add to 6 A.

2A linear DC network has a Thevenin voltage of 50 V and a Thevenin resistance of 25 Ω. What load resistance receives maximum power?

A.12.5 Ω

B.50 Ω

C.100 Ω

D.25 Ω

Explanation: Maximum power is transferred when RL = Rth = 25 Ω. The load power is then Vth²/(4Rth) = 2500/100 = 25 W, and the transfer efficiency is only 50%.

3By Norton's theorem, an active linear two-terminal network can be replaced by which equivalent circuit?

A.A voltage source in series with an impedance

B.A current source in parallel with an impedance

C.A voltage source in parallel with an impedance

D.A current source in series with an impedance

Explanation: The Norton equivalent is an ideal current source IN, equal to the short-circuit current at the terminals, in parallel with the network's equivalent impedance seen from the terminals.

4A series RLC circuit has R = 10 Ω, L = 100 mH and C = 10 μF. What is its resonant angular frequency ω0?

A.100 rad/s

B.159 rad/s

C.1,000 rad/s

D.10,000 rad/s

Explanation: ω0 = 1/√(LC). LC = 0.1 × 10⁻⁵ = 10⁻⁶ s², so ω0 = 1/10⁻³ = 1,000 rad/s, which is about 159 Hz.

5A balanced star-connected load takes 10 A from a 400 V (line-to-line) supply at 0.8 power factor lagging. What is the total active power?

A.1,848 W

B.3,200 W

C.9,600 W

D.About 5,543 W

Explanation: P = √3 × VL × IL × cos φ = 1.732 × 400 × 10 × 0.8 ≈ 5,543 W. Equivalently, each phase has 230.9 V × 10 A × 0.8 ≈ 1,848 W, and three phases give about 5,543 W.

6What is the power factor of a series RLC circuit at resonance?

A.1.0 (unity)

B.0 lagging

C.0 leading

D.0.707 lagging

Explanation: At resonance XL = XC, so the net reactance is zero and Z = R. Voltage and current are in phase, giving unity power factor.

7A magnetic circuit has a mean length of 0.5 m, a cross-section of 0.002 m² and a relative permeability of 1,000 (μ0 = 4π × 10⁻⁷ H/m). What is its reluctance?

A.3.98 × 10⁵ AT/Wb

B.1.99 × 10⁵ AT/Wb

C.7.96 × 10⁵ AT/Wb

D.1.59 × 10⁶ AT/Wb

Explanation: S = l/(μ0 μr A) = 0.5/(4π × 10⁻⁷ × 1000 × 0.002) = 0.5/(2.513 × 10⁻⁶) ≈ 1.99 × 10⁵ AT/Wb.

8In the two-wattmeter method on a balanced three-phase load, both wattmeters read the same positive value. What is the load power factor?

A.0.5 lagging

B.0.866 lagging

C.1.0 (unity)

D.0

Explanation: tan φ = √3 (W1 − W2)/(W1 + W2). With W1 = W2, tan φ = 0, so φ = 0° and the power factor is unity.

9To which of the following can the superposition theorem NOT be applied directly?

A.A linear circuit with two independent DC voltage sources

B.A linear AC network with one voltage source and one current source

C.A linear resistive network that also contains dependent sources

D.The total power dissipated in a resistor fed by two sources

Explanation: Superposition applies to responses that are linear in the sources, such as voltages and currents. Power varies with the square of current (I²R), so the power from each source cannot simply be added. The currents must be superposed first and the power then calculated.

10What is the form factor of a pure sinusoidal wave?

A.1.11

B.1.00

C.1.414

D.1.57

Explanation: Form factor = RMS value / average value over a half-cycle = (Vm/√2)/(2Vm/π) = π/(2√2) ≈ 1.11.

About the NEC Electrical Engineering Exam

The Nepal Engineering Council Registration Examination for electrical engineering (syllabus code AElE) is the professional licensure test established under the Nepal Engineering Council Act, 2055 (amended 2079). The examination features 100 one-mark objective questions covering circuit fundamentals, electrical machinery, hydropower plants, instrumentation, power electronics, system protection, transmission lines, illumination/traction, power system analysis, and project planning. This page offers independent practice by OpenExamPrep.

Exam sponsor: Nepal Engineering Council (NEC). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

100 multiple-choice questions of 1 mark each (full marks 100) in 2 hours. Each of the 10 syllabus chapters contributes 10 questions, with at least one question from each of its 6 sub-chapters. The pass mark is 50%.

Time Limit

2 hours

Passing Score

50%

Exam / Certification Fees

NPR 2,500

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

10%

Fundamental of Electrical Engineering

Circuit laws and network theorems, AC fundamentals, transients in RL, RC and RLC circuits, AC power and resonance, and three-phase systems.

10%

Electrical Machines

Magnetic circuits, transformers, DC machines, synchronous machines, three-phase induction motors and single-phase motors.

10%

Power Plants Engineering

Hydroelectric and diesel plants, solar and wind generation, energy storage, excitation systems and AVRs, and generator starting and black start.

10%

Electrical Measurements and Instrumentations

Measurement errors and AC bridges, analogue instruments, transducers and sensors, A/D and D/A converters, digital instrumentation and instrument transformers.

10%

Power Electronics and Control

Control system fundamentals and stability, time and frequency response, power semiconductor devices, rectifiers, inverters and choppers, UPS and HVDC.

10%

Power System Protection

Fuses and isolators, circuit breakers, protective relays, lightning protection, earthing, and substations and compensation devices.

10%

Transmission and Distribution Lines

Overhead lines and cables, choice of voltage and line performance, mechanical design and sag, insulators, loads, distribution systems and power factor correction.

10%

Utilization of Electrical Energy

Illumination, electrical design and estimation, tariffs and electricity regulation in Nepal, electric drives, electric heating and electric traction.

10%

Power System Analysis

Line parameters and the per-unit system, line performance, fault calculations with symmetrical components, load flow, stability, and voltage and VAR control.

10%

Project Planning, Design and Implementation

Engineering drawing, engineering economics, project planning and scheduling (CPM/PERT), project management and tendering, professional practice, and the NEC Act and Regulations.

Preparing for the NEC Electrical Engineering Exam

What You Need to Know

Passing score: 50%
Assessment: 100 multiple-choice questions of 1 mark each (full marks 100) in 2 hours. Each of the 10 syllabus chapters contributes 10 questions, with at least one question from each of its 6 sub-chapters. The pass mark is 50%.
Time limit: 2 hours
Exam / certification fees: NPR 2,500 Official sources

Using Our Practice Resources

Work through all 101 available questions
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NEC Electrical Engineering: Suggested Study Strategy

1Work through transformer and induction motor calculations: equivalent circuits, efficiency, regulation and slip.

2Practise symmetrical components and sequence-network connections for SLG, LL and LLG faults.

3Solve numerical problems on sag, string efficiency, surge impedance loading and ABCD parameters.

4Study hydropower plants as built in Nepal, including turbine selection by specific speed, storage versus run-of-river, excitation systems and black start.

5Review the NEC Act, 2055 and Regulations, 2057, and procurement rules under the Public Procurement Act, 2063.

Frequently Asked Questions

What is the format and passing score of the NEC Electrical Engineering exam?

Under NEC's 2082 marking scheme, the paper has 100 multiple-choice questions worth 1 mark each (full marks 100), takes 2 hours and needs 50% to pass. It replaced the earlier mix of 60 one-mark and 20 two-mark questions. The official marking scheme does not mention negative marking.

How are questions distributed across the AElE syllabus?

The AElE syllabus has 10 chapters, each with 6 sub-chapters. NEC sets 10 questions from each chapter, including at least one from every sub-chapter, so each chapter carries 10% of the marks.

What are the exam and registration fees?

The exam fee is NPR 2,500, paid with the online application at register.nec.gov.np. Applications in the late window, up to seven days after the deadline, cost double. After passing, the NEC Regulations set a registration fee of NPR 5,000 for entry in the register as a general registered engineer.

Who is eligible to take the NEC AElE exam?

Applicants need a bachelor's degree in electrical engineering from an institution recognized by the Nepal Engineering Council. Related programmes such as electrical and electronics engineering have their own registration syllabus, so check the syllabus for your degree on nec.gov.np.

How often is the NEC registration exam held?

The NEC Act requires the Council to hold the registration exam at least twice a year, and NEC publishes an annual exam calendar. The 14th exam was held in Asoj 2083 (October 2026) at centres in Lalitpur (IOE Pulchowk) and Pokhara.

In which language is the exam conducted?

The official AElE syllabus and NEC's model questions are in English, and this practice bank is also in English.

Is this practice bank official?

No. These are independent practice questions by OpenExamPrep for studying the AElE syllabus topics. They are not NEC questions, and NEC's notices on nec.gov.np remain the authority on exam dates, fees and rules.