100+ Free IESL Part III Practice Questions

Pass your IESL Qualifying Examination Part III (Institution of Engineers, Sri Lanka) exam on the first try — instant access, no signup required.

✓ No registration✓ No credit card✓ No hidden fees✓ Start practicing immediately

~55% Pass Rate

100+ Questions

100% Free

Loading practice questions...

Same family resources

Explore More IESL Qualifying Examination Sri Lanka

Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.

IESL Qualifying Examination Part I (Institution of Engineers, Sri Lanka)

Practice Questions100 questions

IESL Qualifying Examination Part II - Civil Engineering (Institution of Engineers, Sri Lanka)

Practice Questions100 questions

IESL Qualifying Examination Part II - Electrical Engineering (Institution of Engineers, Sri Lanka)

Practice Questions100 questions

IESL Qualifying Examination Part II - Mechanical Engineering (Institution of Engineers, Sri Lanka)

Practice Questions100 questions

2026 Statistics

Key Facts: IESL Part III Exam

100

Practice Questions

OpenExamPrep

3 hours

Recommended Time

IESL Part III guidelines

Rs. 7,500

Exam Fee

IESL Education Division

50%

Passing Score

IESL Regulations

30 days

EIA Public Review

National Environmental Act

C.Eng

Target Credential

IESL Chartered Status

The IESL Part III exam practice covers the syllabus for the qualifying examinations in Sri Lanka. It features 100 questions covering professional practice, ethics (IESL Code of Ethics), project management, engineering economics, environmental impact assessment (NEA regulations), and technical applications. The passing score is 50%, with an exam fee of approximately Rs. 7,500.

Sample IESL Part III Practice Questions

Try these sample questions to test your IESL Part III exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1The Institution of Engineers, Sri Lanka (IESL) was originally established as a statutory body under which of the following legislative acts?

A.IESL Act No. 17 of 1968

B.Science and Technology Development Act No. 11 of 1994

C.Construction Industry Development Act No. 33 of 2014

D.State Engineering Corporation Act No. 22 of 1962

Explanation: The Institution of Engineers, Sri Lanka (IESL) was incorporated by the Institution of Engineers, Sri Lanka, Act No. 17 of 1968, which established it as the premier national body representing the engineering profession in Sri Lanka.

2Which of the following classes of membership within the IESL is classified as a 'Corporate Member' with the right to vote and use the title 'Chartered Engineer' (C.Eng)?

A.Associate Member (AMIESL)

B.Member (MIESL)

C.Associate

D.Affiliate

Explanation: Under the IESL constitution, only Corporate Members (Fellows and Members - MIESL) are entitled to vote on corporate matters and use the title 'Chartered Engineer'. Associate Members, Associates, and Affiliates are Non-Corporate members.

3In the Sri Lankan construction industry, standard contract documents and guidelines are published by which authority, which succeeded the Institute for Construction Training and Development (ICTAD)?

A.Urban Development Authority (UDA)

B.Road Development Authority (RDA)

C.Construction Industry Development Authority (CIDA)

D.Central Environmental Authority (CEA)

Explanation: The Construction Industry Development Authority (CIDA), established under the Construction Industry Development Act No. 33 of 2014, succeeded ICTAD as the regulatory authority responsible for standardizing bidding documents and guidelines in Sri Lanka.

4Under the Sri Lankan Arbitration Act No. 6 of 1995, an arbitral award is considered:

A.Merely advisory and subject to mandatory review by the District Court

B.Final and binding on the parties, subject to limited grounds for setting aside

C.Automatically void if one party objects within 14 days

D.Enforceable only if approved by the IESL Council

Explanation: According to the Arbitration Act No. 6 of 1995, arbitral awards are final and binding on the parties. They can only be set aside by the High Court under very specific, narrow statutory grounds (e.g., incapacity, lack of notice, or conflict with public policy).

5Under CIDA SBD-02 (Standard Bidding Document for Major Contracts), what is the default length of the Defect Liability Period (DLP) for general civil engineering works, unless otherwise specified?

A.180 days (approx. 6 months)

B.365 days (approx. 12 months)

C.730 days (approx. 24 months)

D.90 days (approx. 3 months)

Explanation: CIDA SBD-02 standard conditions specify a Defect Liability Period (DLP) of 365 days (12 months) starting from the date of practical completion, during which the contractor is responsible for rectifying any construction defects.

6Which Sri Lankan legislation regulates the safety, health, and welfare of workers employed in manufacturing plants and engineering workshops?

A.Factories Ordinance No. 45 of 1942

B.Shop and Office Employees Act No. 19 of 1954

C.Workmen's Compensation Ordinance No. 19 of 1934

D.Industrial Disputes Act No. 43 of 1950

Explanation: The Factories Ordinance No. 45 of 1942 (and its amendments) is the primary statute governing occupational safety, health, and machinery guarding in factories, construction sites, and workshops in Sri Lanka.

7If an engineer in Sri Lanka fails to exercise reasonable skill and care in their design, resulting in structural collapse, they can be sued for damages under which legal concept?

A.Criminal negligence under the Penal Code only

B.Tort of negligence under common law (Delict)

C.Strict liability under the Central Environmental Authority Act

D.Breach of statutory duty under the CIDA Act only

Explanation: Under Sri Lankan law (which draws civil tort concepts from Roman-Dutch law and English common law, often termed Delict), an engineer owes a duty of care. A breach of this duty resulting in damage forms a classic case for the Tort of Negligence.

8Under the Sri Lanka Intellectual Property Act No. 36 of 2003, what is the duration of protection granted for an approved industrial patent from its filing date?

A.10 years, non-renewable

B.20 years, non-renewable

C.50 years, renewable once

D.14 years, renewable for 7 years

Explanation: The Intellectual Property Act No. 36 of 2003 aligns Sri Lankan patent terms with the international TRIPS agreement, granting a patent protection period of exactly 20 years from the date of filing, which is non-renewable.

9Which of the following body has the statutory authority to approve zoning and building heights in municipal areas of Sri Lanka, including Colombo?

A.IESL Council

B.Central Environmental Authority (CEA)

C.Urban Development Authority (UDA)

D.Construction Industry Development Authority (CIDA)

Explanation: The Urban Development Authority (UDA) was established under Act No. 41 of 1978 and is the legal entity responsible for planning, zoning, and approving building regulations and height restrictions in declared urban areas.

10What is the purpose of 'Professional Indemnity Insurance' (PII) for practicing engineers in Sri Lanka?

A.To cover physical injuries of workers on a construction site

B.To protect the engineer against financial claims arising from professional negligence or errors in design

C.To compensate the client in case the contractor goes bankrupt

D.To pay for the registration fees of the engineer with the IESL

Explanation: Professional Indemnity Insurance is designed to cover civil liability claims for compensation arising out of professional errors, omissions, or design negligence during engineering practice.

About the IESL Part III Exam

The IESL Qualifying Examination Part III is the final academic assessment step required by the Institution of Engineers, Sri Lanka for candidates seeking corporate membership and Chartered Engineer (C.Eng) status. The exam tests candidates on critical professional areas including professional practice, engineering ethics, project management (CPM, PERT, EVM), engineering economics (NPV, IRR, depreciation), environmental impact assessment under the National Environmental Act, and specialized engineering discipline applications.

Assessment

100 multiple-choice questions covering professional practice, project management, economics, ethics, and EIA

Time Limit

3 hours

Passing Score

50%

Exam Fee

Rs. 7,500 (Institution of Engineers, Sri Lanka (IESL))

IESL Part III Exam Content Outline

15%

Professional Practice & Sri Lankan Law

CIDA (formerly ICTAD) contract guidelines, Sri Lankan labor law (Factories Ordinance), Arbitration Act of 1995, building regulations, and professional liability.

15%

Engineering Ethics & Conduct

The IESL Code of Ethics clauses, conflict of interest management, public safety paramountcy, environmental protection duties, and professional relations.

20%

Project Management

Work Breakdown Structures (WBS), planning and scheduling (CPM/PERT network diagrams, float calculations), resource leveling, Earned Value Management, risk, and procurement.

20%

Engineering Economics & Finance

Time value of money, compound interest factors, capital recovery, project appraisal techniques (NPV, IRR, benefit-cost ratio), depreciation methods, inflation, and cost estimation.

15%

Environmental Impact Assessment & Sustainability

National Environmental Act No. 47 of 1980, EIA/IEE prescribed projects, scoping, public review rules (30 working days), EMPs, green building certifications, and waste management.

15%

Specialized Discipline Applications

Discipline-specific scenarios checking practical application of Civil (hydraulics, concrete), Electrical (power factor, safety), and Mechanical (pumps, thermodynamics) engineering principles.

How to Pass the IESL Part III Exam

What You Need to Know

Passing score: 50%
Assessment: 100 multiple-choice questions covering professional practice, project management, economics, ethics, and EIA
Time limit: 3 hours
Exam fee: Rs. 7,500

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

IESL Part III Study Tips from Top Performers

1Memorize the IESL Code of Ethics, particularly Clause 1 (safety of the public is paramount) and Clause 3 (minimizing adverse environmental impacts).

2Learn CIDA (ICTAD) standard tender documents, focusing on SBD-02 clauses regarding variation orders, defect liability periods (typically 12 months), and liquidated damages.

3Understand the Arbitration Act No. 6 of 1995, especially regarding the binding nature of arbitral awards and the jurisdiction of Sri Lankan courts.

4Master network analysis calculations: Critical Path Method (CPM) floats, and PERT formulas for expected activity duration and variance.

5Be ready for quantitative Engineering Economics questions, including present worth analysis, IRR interpolation, nominal vs. effective interest rates, and straight-line/double declining depreciation.

6Recall key thresholds under the National Environmental Act, especially the mandatory 30-working-day public notice/review period for EIA reports.

7Review basic discipline-specific equations, such as the Rational Method for runoff calculation (Q = CIA) in Civil, Power Factor Correction equations in Electrical, and pump NPSH in Mechanical.

Frequently Asked Questions

What is the IESL Qualifying Examination Part III?

The IESL Qualifying Examination Part III is the final qualifying milestone administered by the Institution of Engineers, Sri Lanka. It assesses non-technical but critical aspects of engineering practice such as law, economics, project management, ethics, and environmental studies, which are required for candidates seeking Associate Membership (AMIESL) or Corporate Membership (MIESL) to register as a Chartered Engineer (C.Eng).

Who is eligible to take the IESL Part III exam?

Candidates who have passed the IESL Part I and Part II examinations, or who possess an engineering degree recognized by IESL and are currently registered as Associate Members (AMIESL), are eligible to attempt the Part III qualifying requirements. It is typically taken alongside or prior to the Professional Review process.

What are the core subject areas tested in the IESL Part III syllabus?

The syllabus focuses on Professional Practice (Sri Lankan law, contract forms, CIDA), Engineering Ethics (IESL Code of Ethics), Project Management (scheduling, CPM/PERT, earned value), Engineering Economics (financial analysis, NPV, IRR, depreciation), Environmental Impact Assessment (National Environmental Act of Sri Lanka, sustainable development), and specialized discipline-specific applications.

How much does the IESL Part III exam cost?

The examination registration fee is approximately Rs. 7,500. This fee is set by the IESL Council and should be verified directly on the IESL portal or by contacting the IESL Education and Examinations Division.

What is the passing score for the IESL Part III examination?

The passing mark is 50% for professional qualifying exams. Candidates must demonstrate competence in both core theoretical principles and qualitative/quantitative problem-solving.

What standard contract forms are tested under Sri Lankan Professional Practice?

The exam heavily tests standard contract documents published by the Construction Industry Development Authority (CIDA), formerly known as ICTAD. Key documents include SBD-01, SBD-02 (Major Contracts), SBD-03, and SBD-04, as well as the rules governing arbitration under the Arbitration Act No. 6 of 1995.

What is the role of the Central Environmental Authority (CEA) in Sri Lankan EIA processes?

Under the National Environmental Act (NEA), the Central Environmental Authority is the main regulatory agency. It oversees the Environmental Impact Assessment (EIA) process for 'Prescribed Projects', coordinates with Project Approving Agencies (PAAs), and administers the mandatory 30-working-day public review period.