2026 question paper
Renewable Energy Systems
28 questions
Q.1(a). Which scientific principle is mainly involved in solar photovoltaic cells? (i) Electromagnetic induction (ii) Electrolysis (iii) Combustion (iv) Photoelectric effect20262m
Module 3: Photovoltaic Generation
View this question on its own page →Which scientific principle is mainly involved in solar photovoltaic cells?
(i) Electromagnetic induction
(ii) Electrolysis
(iii) Combustion
(iv) Photoelectric effect
Q.1(b). Which of the following is a major challenge of renewable energy? (i) Intermittent power generation (ii) High carbon emissions (iii) Non-availability of sunlight on Earth (iv) Infinite fuel cost20262m
Module 1: Principles of Renewable Energy
View this question on its own page →Which of the following is a major challenge of renewable energy?
(i) Intermittent power generation
(ii) High carbon emissions
(iii) Non-availability of sunlight on Earth
(iv) Infinite fuel cost
Q.1(c). Extraterrestrial solar radiation refers to solar radiation received (i) On the Earth's surface (ii) Inside a greenhouse (iii) Outside the Earth's atmosphere (iv) Inside a solar collector20262m
Module 2: Solar Radiation and Applications
View this question on its own page →Extraterrestrial solar radiation refers to solar radiation received
(i) On the Earth's surface
(ii) Inside a greenhouse
(iii) Outside the Earth's atmosphere
(iv) Inside a solar collector
Q.1(d). Solar crop dryers are mainly used to (i) Preserve agricultural products (ii) Produce drinking water (iii) Generate electricity (iv) Cool buildings20262m
Module 2: Solar Radiation and Applications
View this question on its own page →Solar crop dryers are mainly used to
(i) Preserve agricultural products
(ii) Produce drinking water
(iii) Generate electricity
(iv) Cool buildings
Q.1(e). The most commonly used material for solar cells is (i) Copper (ii) Silicon (iii) Iron (iv) Aluminium20262m
Module 3: Photovoltaic Generation
View this question on its own page →The most commonly used material for solar cells is
(i) Copper
(ii) Silicon
(iii) Iron
(iv) Aluminium
Q.1(f). Which of the following is an impulse turbine? (i) Kaplan turbine (ii) Francis turbine (iii) Pelton turbine (iv) Propeller turbine20262m
Module 4: Hydro-power
View this question on its own page →Which of the following is an impulse turbine?
(i) Kaplan turbine
(ii) Francis turbine
(iii) Pelton turbine
(iv) Propeller turbine
Q.1(g). A hydraulic ram pump operates mainly by using (i) Solar energy (ii) Wind energy (iii) Water hammer effect (iv) Electrical energy20262m
Module 4: Hydro-power
View this question on its own page →A hydraulic ram pump operates mainly by using
(i) Solar energy
(ii) Wind energy
(iii) Water hammer effect
(iv) Electrical energy
Q.1(h). Which component converts the mechanical energy of a turbine into electrical energy? (i) Generator (ii) Penstock (iii) Draft tube (iv) Spillway20262m
Module 4: Hydro-power
View this question on its own page →Which component converts the mechanical energy of a turbine into electrical energy?
(i) Generator
(ii) Penstock
(iii) Draft tube
(iv) Spillway
Q.1(i). The power available in wind is proportional to the (i) Wind speed (ii) Square of wind speed (iii) Cube of wind speed (iv) Fourth power of wind speed20262m
Module 5: Power from the Wind
View this question on its own page →The power available in wind is proportional to the
(i) Wind speed
(ii) Square of wind speed
(iii) Cube of wind speed
(iv) Fourth power of wind speed
Q.1(j). Biodiesel can be produced from (i) Vegetable oils (ii) Sand (iii) Coal ash (iv) Iron ore20262m
Module 6: Biomass and Biofuels
View this question on its own page →Biodiesel can be produced from
(i) Vegetable oils
(ii) Sand
(iii) Coal ash
(iv) Iron ore
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Q.2(a). Discuss the role of renewable energy in achieving sustainable development goals.20267m
Module 1: Principles of Renewable Energy
View this question on its own page →Discuss the role of renewable energy in achieving sustainable development goals.
Q.2(b). Differentiate between renewable and non-renewable energy sources with suitable examples.20267m
Module 1: Principles of Renewable Energy
View this question on its own page →Differentiate between renewable and non-renewable energy sources with suitable examples.
Q.3(a). Explain how the Sun acts as a primary source of energy for Earth and its significance in the energy cycle.20267m
Module 1: Principles of Renewable Energy
View this question on its own page →Explain how the Sun acts as a primary source of energy for Earth and its significance in the energy cycle.
Q.3(b). Draw a schematic diagram of a solar pond based electric power plant with cooling tower and explain its working.20267m
Module 2: Solar Radiation and Applications
View this question on its own page →Draw a schematic diagram of a solar pond based electric power plant with cooling tower and explain its working.
Q.4(a). With a neat sketch explain working of solar water heating systems.20267m
Module 2: Solar Radiation and Applications
View this question on its own page →With a neat sketch explain working of solar water heating systems.
Q.4(b). Discuss the methods used for the measurement and estimation of solar radiation.20267m
Module 2: Solar Radiation and Applications
View this question on its own page →Discuss the methods used for the measurement and estimation of solar radiation.
Q.5(a). Describe the construction and working of a silicon p-n junction solar cell.20267m
Module 3: Photovoltaic Generation
View this question on its own page →Describe the construction and working of a silicon p-n junction solar cell.
Q.5(b). Discuss the absorption of solar radiation in photovoltaic cells and the factors affecting it.20267m
Module 3: Photovoltaic Generation
View this question on its own page →Discuss the absorption of solar radiation in photovoltaic cells and the factors affecting it.
Q.6(a). Describe the main components of a small hydropower plant and explain their functions.20267m
Module 4: Hydro-power
View this question on its own page →Describe the main components of a small hydropower plant and explain their functions.
Q.6(b). Differentiate between impulse turbines and reaction turbines based on their working principle.20267m
Module 4: Hydro-power
View this question on its own page →Differentiate between impulse turbines and reaction turbines based on their working principle.
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Log daily food, travel, and hostel expenses instantly. Set monthly spending limits and see where your money goes without complex spreadsheets.
Q.7(a). Explain the operation of wind energy system with neat sketch.20267m
Module 5: Power from the Wind
View this question on its own page →Explain the operation of wind energy system with neat sketch.
Q.7(b). A HAWT has the following data: - Speed of wind = 10 m/s at 1 atm and 15°C - Diameter of rotor = 102 m - Speed of rotor = 40 rpm Calculate the maximum possible torque produced at the shaft.20267m
Module 5: Power from the Wind
View this question on its own page →A HAWT has the following data:
- Speed of wind = 10 m/s at 1 atm and 15°C
- Diameter of rotor = 102 m
- Speed of rotor = 40 rpm
Calculate the maximum possible torque produced at the shaft.
Q.8(a). Compare and contrast the biomass and biogas.20267m
Module 6: Biomass and Biofuels
View this question on its own page →Compare and contrast the biomass and biogas.
Q.8(b). Explain the principle of pyrolysis (destructive distillation) of biomass and describe the major products obtained from the process.20267m
Module 6: Biomass and Biofuels
View this question on its own page →Explain the principle of pyrolysis (destructive distillation) of biomass and describe the major products obtained from the process.
Q.9(a). Write short note on: Pyranometer and Sunshine Recorder20267m
Module 2: Solar Radiation and Applications
View this question on its own page →Write short note on: Pyranometer and Sunshine Recorder
Q.9(b). Write short note on: Air heaters20267m
Module 2: Solar Radiation and Applications
View this question on its own page →Write short note on: Air heaters
Q.9(c). Write short note on: Anaerobic digestion for biogas20267m
Module 6: Biomass and Biofuels
View this question on its own page →Write short note on: Anaerobic digestion for biogas
Q.9(d). Write short note on: Water desalination20267m
Module 2: Solar Radiation and Applications
View this question on its own page →Write short note on: Water desalination
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