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ENEE 351Bachelor in Electrical Engineering · Semester 61 Paper Available

Power Plant Design

Past examination question papers and complete curriculum syllabus for Power Plant Design (ENEE 351), Bachelor in Electrical Engineering Semester 6 under Institute of Engineering (IOE), Tribhuvan University.

Past Question Papers (PDF)

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Note: This question paper file (8th sem) was archived from an IOE exam session for the common Power Plant Design curriculum.

8th-sem_Power Plant Design.pdf

IOE Past Examination Paper

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Most Frequently Asked Questions

Top recurring IOE board exam questions for Power Plant Design with verified mark schemes, formula notation, and recurrence frequency.

Showing 30 of 30 top repeated questions

Load Curves and Power Station Economics

5 Questions
#1Repeated 4 Times[8 Marks]Load Curves and Power Station Economics
Define connected load, maximum demand, demand factor, load factor, diversity factor, and capacity factor. Explain their significance in determining the cost of electrical energy generation.
Appeared in:2083 Baishakh2081 Bhadra2079 Chaitra2076 Chaitra
#2Repeated 3 Times[8 Marks]Load Curves and Power Station Economics
The annual load duration curve of a power station can be approximated by a straight line from 60 MW to 10 MW. If the installed capacity is 75 MW, calculate: (a) Annual energy generated, (b) Load factor, (c) Capacity factor, (d) Utilization factor.
Appeared in:2082 Bhadra2080 Chaitra2077 Magh
#3Repeated 3 Times[6 Marks]Load Curves and Power Station Economics
Explain base load and peak load power stations. Discuss criteria for selecting the type and unit size of generating sets for a grid-connected system.
Appeared in:2082 Chaitra2080 Baishakh2078 Bhadra
#4Repeated 3 Times[6 Marks]Load Curves and Power Station Economics
Derive the two-part and three-part tariff equations. Discuss how power factor penalty is incorporated into two-part tariffs for industrial consumers.
Appeared in:2081 Chaitra2079 Baishakh2076 Baishakh
#5Repeated 3 Times[6 Marks]Load Curves and Power Station Economics
Explain depreciation methods (Straight line method, Diminishing value method, and Sinking fund method) for evaluating power plant assets.
Appeared in:2081 Baishakh2078 Chaitra2075 Bhadra

Hydroelectric Power Station Design and Equipment

6 Questions
#1Repeated 3 Times[8 Marks]Hydroelectric Power Station Design and Equipment
Explain the general layout and essential components of a high-head run-of-river (RoR) and pondage run-of-river (PRoR) hydroelectric power plant in Nepal.
Appeared in:2083 Baishakh2081 Bhadra2078 Chaitra
#2Repeated 3 Times[8 Marks]Hydroelectric Power Station Design and Equipment
Derive the hydrodynamic water hammer equation in penstocks using Joukowsky's formula $\Delta H = \frac{a \Delta v}{g}$. Calculate pressure rise for rapid valve closure.
Appeared in:2082 Bhadra2080 Chaitra2077 Chaitra
#3Repeated 3 Times[8 Marks]Hydroelectric Power Station Design and Equipment
Classify hydraulic turbines according to head, specific speed, and action of water. Select suitable turbine type for $H = 250$ m, $Q = 15\text{ m}^3/\text{s}$, and $N = 500$ rpm.
Appeared in:2082 Chaitra2079 Chaitra2076 Chaitra
#4Repeated 3 Times[8 Marks]Hydroelectric Power Station Design and Equipment
Design criteria and sizing of surge tanks. Explain how surge oscillations are damped in simple, orifice, and differential surge tanks.
Appeared in:2081 Bhadra2078 Bhadra2075 Chaitra
#5Repeated 3 Times[8 Marks]Hydroelectric Power Station Design and Equipment
Describe the operating principle, components, and characteristics of electro-hydraulic speed governors used in modern hydro-turbines.
Appeared in:2083 Baishakh2080 Baishakh2077 Magh
#6Repeated 3 Times[6 Marks]Hydroelectric Power Station Design and Equipment
Explain pumped-storage hydroelectric plants. Discuss their operational modes (pumping vs generating) and role in grid frequency regulation and peak shaving.
Appeared in:2081 Chaitra2079 Baishakh2076 Baishakh

Thermal and Gas Turbine Power Station Design

4 Questions
#1Repeated 3 Times[8 Marks]Thermal and Gas Turbine Power Station Design
Draw the schematic layout of a modern coal-fired thermal power station and explain the Rankine cycle with reheat and regenerative feed water heating.
Appeared in:2083 Baishakh2081 Bhadra2079 Chaitra
#2Repeated 3 Times[8 Marks]Thermal and Gas Turbine Power Station Design
Explain the thermodynamic Brayton cycle for open-cycle and closed-cycle gas turbine power plants. Show how intercooling, reheat, and regeneration enhance thermal efficiency.
Appeared in:2082 Bhadra2080 Chaitra2077 Chaitra
#3Repeated 3 Times[8 Marks]Thermal and Gas Turbine Power Station Design
Explain the principle and layout of Combined Cycle Gas Turbine (CCGT) power plants. Discuss Heat Recovery Steam Generator (HRSG) configuration.
Appeared in:2082 Chaitra2080 Baishakh2078 Bhadra
#4Repeated 3 Times[6 Marks]Thermal and Gas Turbine Power Station Design
Describe auxiliary power supply schemes in thermal power stations. Explain black start capability and emergency diesel generator (EDG) sizing.
Appeared in:2081 Baishakh2078 Chaitra2075 Bhadra

Substation Design and High-Voltage Switchyard Layout

5 Questions
#1Repeated 3 Times[8 Marks]Substation Design and High-Voltage Switchyard Layout
Compare single busbar, sectionalized busbar, double bus with single breaker, and one-and-a-half breaker schemes in terms of reliability, flexibility, and cost.
Appeared in:2083 Baishakh2081 Bhadra2078 Chaitra
#2Repeated 3 Times[8 Marks]Substation Design and High-Voltage Switchyard Layout
Explain Gas Insulated Substations (GIS) compared to Air Insulated Substations (AIS). Discuss properties of SF6 gas and modular GIS components.
Appeared in:2082 Bhadra2080 Chaitra2077 Magh
#3Repeated 3 Times[8 Marks]Substation Design and High-Voltage Switchyard Layout
Design clearances (phase-to-phase, phase-to-ground, and sectional clearance) for a 132 kV outdoor switchyard according to CBIP/IEC standards.
Appeared in:2082 Chaitra2079 Chaitra2076 Chaitra
#4Repeated 3 Times[8 Marks]Substation Design and High-Voltage Switchyard Layout
Explain the selection and rating of current transformers (CTs) and potential transformers (PTs) for protection and metering cores in 66 kV substations.
Appeared in:2081 Bhadra2078 Bhadra2075 Chaitra
#5Repeated 3 Times[6 Marks]Substation Design and High-Voltage Switchyard Layout
Describe DC auxiliary power systems in substations including battery bank sizing, float and boost chargers, and distribution boards.
Appeared in:2081 Chaitra2079 Baishakh2076 Baishakh

Grounding and Earthing Systems in Power Plants

5 Questions
#1Repeated 3 Times[8 Marks]Grounding and Earthing Systems in Power Plants
Explain step potential, touch potential, mesh potential, and ground potential rise (GPR) in accordance with IEEE Standard 80.
Appeared in:2083 Baishakh2081 Bhadra2079 Chaitra
#2Repeated 3 Times[8 Marks]Grounding and Earthing Systems in Power Plants
Design a grounding mat for a 132/33 kV substation. Given: soil resistivity $\rho = 100\ \Omega\cdot\text{m}$, fault current $I_f = 20$ kA, fault duration $t_s = 0.5$ s. Determine conductor size and mesh layout.
Appeared in:2082 Bhadra2080 Chaitra2077 Chaitra
#3Repeated 3 Times[8 Marks]Grounding and Earthing Systems in Power Plants
Discuss methods of measuring soil resistivity using Wenner four-point method and Fall of Potential method for earth resistance measurement.
Appeared in:2082 Chaitra2080 Baishakh2078 Bhadra
#4Repeated 3 Times[8 Marks]Grounding and Earthing Systems in Power Plants
Explain equipment grounding vs system neutral grounding. Compare ungrounded, solid grounded, resistance grounded, and Peterson coil grounded systems.
Appeared in:2081 Baishakh2078 Chaitra2075 Bhadra
#5Repeated 3 Times[8 Marks]Grounding and Earthing Systems in Power Plants
Explain the design of lightning shielding protection for substations using mast and ground wire methods based on the Electro-Geometric Model (rolling sphere method).
Appeared in:2081 Chaitra2079 Baishakh2076 Chaitra

Environmental and Safety Aspects in Power Stations

5 Questions
#1Repeated 3 Times[6 Marks]Environmental and Safety Aspects in Power Stations
Discuss Environmental Impact Assessment (EIA) for hydropower projects in Nepal with focus on downstream ecological flow and sedimentation.
Appeared in:2083 Baishakh2080 Chaitra2078 Bhadra
#2Repeated 3 Times[6 Marks]Environmental and Safety Aspects in Power Stations
Explain greenhouse gas emissions and pollution abatement systems (Electrostatic Precipitators, Flue Gas Desulfurization) in thermal plants.
Appeared in:2082 Bhadra2081 Baishakh2077 Magh
#3Repeated 3 Times[6 Marks]Environmental and Safety Aspects in Power Stations
Describe electrical safety rules, permit-to-work (PTW) procedures, and lockout-tagout (LOTO) protocols in high-voltage installations.
Appeared in:2082 Chaitra2079 Chaitra2076 Baishakh
#4Repeated 3 Times[6 Marks]Environmental and Safety Aspects in Power Stations
Explain disaster management and Emergency Action Plans (EAP) for dam-break flood hazards in hydroelectric power plants.
Appeared in:2081 Bhadra2078 Chaitra2075 Chaitra
#5Repeated 3 Times[6 Marks]Environmental and Safety Aspects in Power Stations
Discuss carbon credits, clean development mechanisms (CDM), and renewable energy portfolio standards in power sector planning.
Appeared in:2081 Chaitra2079 Baishakh2076 Chaitra

Curriculum Syllabus & Course Topics

Sourced from TU curriculum portal
Full Syllabus (PDF)
Chapter-wise Units & Micro-Syllabus Topics (6 Units)

  1. 1. Load Curves and Power Station Economics

    5

  2. 2. Hydroelectric Power Station Design and Equipment

    10

  3. 3. Thermal and Gas Turbine Power Station Design

    6

  4. 4. Substation Design and High-Voltage Switchyard Layout

    9

  5. 5. Grounding and Earthing Systems in Power Plants

    6

  6. 6. Environmental and Safety Aspects in Power Stations

    5

Examination Scheme & Marks Distribution

Evaluation Structure

  • Final Board Theory Exam: 60 Marks (Pass mark: 24)
  • Internal Assessment: 40 Marks (Pass mark: 16)
  • Practical / Lab Exam: 25 or 50 Marks (Continuous lab evaluation + viva, where applicable)

* This is the general current IOE 60/40 scheme; verify course-specific details in the syllabus above.

Exam Preparation Guidelines

  • Review the available past examination paper to understand question styling, typical derivation topics, and marks allocation.
  • Cross-reference key answers with official syllabus units, standard textbooks, and lecture notes.
  • Structure answers with labeled diagrams, concise bullet points, and highlight final answers in numerical solutions.

Frequently Asked Questions (Power Plant Design)

Q: How can I download Power Plant Design past question papers?

You can preview or download the Power Plant Design question papers (PDF) directly using the built-in viewer on this page with zero redirects or paywalls.

Q: What is the pass mark for Power Plant Design?

The general current scheme is a 60-mark final theory exam and a 40-mark internal assessment, with pass marks of 24 and 16. Verify the course-specific syllabus above.

Q: Where can I find the complete syllabus for this subject?

The available chapter-wise syllabus and topic breakdown is indexed in the Syllabus section above, with links to the curriculum PDF source.

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