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PG Diploma Solar Semester one Paper 2 Exam Section C
- April 4, 2026
- Posted by: iisemumbai
- Category: Question bank
PG Diploma Solar Semester one Paper 2 Exam Section C
🔹 Renewable Energy (Q1–Q10)
1. Explain the concept of energy and its importance.
Answer:
Energy is the capacity to do work and is essential for all human activities. It exists in various forms such as electrical, thermal, and mechanical energy. Every industrial, domestic, and commercial activity depends on energy. Without energy, development and technological progress are not possible. It also plays a key role in economic growth and quality of life. Reliable energy access improves productivity and living standards. Hence, energy is a fundamental requirement for modern society.
2. State and explain the first law of thermodynamics.
Answer:
The first law of thermodynamics states that energy can neither be created nor destroyed. It can only be converted from one form to another. For example, solar energy can be converted into electrical energy using solar panels. This law applies to all physical systems and energy processes. It ensures that total energy remains constant in any system. This principle is important in understanding energy conservation. It is widely applied in renewable energy systems.
3. Describe renewable and non-renewable energy sources.
Answer:
Renewable energy sources are those that are naturally replenished, such as solar, wind, and biomass. They are sustainable and environmentally friendly. Non-renewable energy sources include coal, oil, and natural gas, which are limited in supply. These sources cause pollution and environmental damage. Renewable sources are becoming more important due to increasing energy demand. They help reduce dependence on fossil fuels. Therefore, renewable energy is the future of energy generation.
4. Explain the need for renewable energy.
Answer:
Renewable energy is needed to reduce dependence on fossil fuels. Conventional energy sources are limited and cause environmental pollution. Renewable sources help reduce greenhouse gas emissions. They support sustainable development and energy security. With increasing population, energy demand is rising rapidly. Renewable energy ensures long-term availability of clean power. It also reduces climate change impacts and promotes eco-friendly growth.
5. Discuss the advantages of solar energy.
Answer:
Solar energy is a clean and renewable source of energy. It does not produce harmful emissions during operation. It is abundant and available in most regions of the world. Solar systems require low maintenance and have long life. They can be installed in remote areas without grid connection. Solar energy reduces electricity bills and dependence on fossil fuels. It is a key solution for sustainable energy generation.
6. Explain the environmental impact of fossil fuels.
Answer:
Fossil fuels release large amounts of carbon dioxide when burned. This contributes to global warming and climate change. They also produce pollutants that harm air quality. Extraction of fossil fuels damages land and ecosystems. Continuous use leads to depletion of natural resources. These environmental issues make fossil fuels unsustainable. Therefore, switching to renewable energy is necessary.
7. Describe different types of renewable energy sources.
Answer:
There are several types of renewable energy sources. Solar energy uses sunlight to generate electricity. Wind energy uses wind turbines to produce power. Biomass energy comes from organic materials. Hydropower uses flowing water to generate electricity. Geothermal energy uses heat from the earth’s interior. Tidal energy uses ocean movements. All these sources are sustainable and eco-friendly.
8. Explain how solar energy reduces carbon emissions.
Answer:
Solar energy generates electricity without burning fuel. Therefore, it does not produce carbon dioxide emissions during operation. It replaces fossil fuel-based power generation. This reduces greenhouse gas emissions. Solar energy also helps reduce air pollution. Large-scale solar adoption can significantly reduce global carbon footprint. It is an important step toward clean energy transition.
9. Discuss the role of energy in economic development.
Answer:
Energy is essential for industrial growth and infrastructure development. It powers machines, transportation, and communication systems. Reliable energy supply increases productivity and efficiency. It also improves quality of life and living standards. Countries with higher energy consumption tend to have stronger economies. Energy access is directly linked to GDP growth. Therefore, energy plays a vital role in development.
10. Explain the importance of sustainable energy.
Answer:
Sustainable energy ensures that future generations have access to energy resources. It reduces environmental damage and pollution. It promotes long-term energy security. Renewable energy sources are key to sustainability. Sustainable energy systems support economic and social development. They reduce dependence on non-renewable resources. Therefore, sustainability is crucial for balanced growth.
🔹 Basics of Electricity (Q11–Q20)
11. Explain electric current and its characteristics.
Answer:
Electric current is the flow of electrons through a conductor. It occurs when a voltage is applied across a circuit. Current is measured in amperes. The flow depends on voltage and resistance. Higher voltage results in higher current. It is essential for operating electrical devices. Current can be direct (DC) or alternating (AC). It is a fundamental concept in electrical systems.
12. Define voltage and explain its role in circuits.
Answer:
Voltage is the electrical force that pushes electrons through a conductor. It is also called potential difference. It is measured in volts. Voltage determines the direction and magnitude of current flow. Without voltage, current cannot flow. It is provided by sources like batteries and solar panels. Voltage is essential for energy transfer in circuits.
13. Explain resistance and factors affecting it.
Answer:
Resistance is the opposition to the flow of electric current. It depends on material, length, and cross-sectional area. Higher length increases resistance. Larger area reduces resistance. Temperature also affects resistance. Materials like copper have low resistance. Resistance is measured in ohms. It is important for controlling current in circuits.
14. Explain the relationship between voltage, current, and power.
Answer:
Voltage, current, and power are related by the formula P = V × I. Voltage is the driving force, and current is the flow of charge. Power represents the rate of energy consumption. Increasing voltage or current increases power. This relationship is important in designing electrical systems. It helps determine load requirements. It is widely used in solar system calculations.
15. Differentiate between conductors and insulators.
Answer:
Conductors allow free movement of electrons, while insulators restrict electron flow. Copper and aluminum are good conductors. Rubber and plastic are insulators. Conductors are used in wiring, while insulators provide safety. Conductivity depends on material properties. Both are essential in electrical systems. They help ensure efficient and safe operation.
16. Explain the concept of semiconductor.
Answer:
A semiconductor is a material with conductivity between conductor and insulator. Its conductivity can be controlled by external conditions. Silicon is a common semiconductor. It is widely used in solar cells and electronic devices. Semiconductors play a key role in modern technology. They enable efficient energy conversion. They are essential for solar PV systems.
17. Explain the concept of electric power.
Answer:
Electric power is the rate at which electrical energy is consumed or produced. It is calculated using P = V × I. It is measured in watts. Power determines how much energy a device uses. Higher power means higher energy consumption. It is important in load calculations. It helps design efficient systems.
18. Describe the units used in electricity.
Answer:
Electricity uses standard units for measurement. Current is measured in amperes. Voltage is measured in volts. Resistance is measured in ohms. Power is measured in watts. Energy is measured in kilowatt-hours (kWh). These units help in analyzing electrical systems. They are essential for calculations and design.
19. Explain the direction of current flow.
Answer:
Conventional current flows from higher voltage to lower voltage. It is opposite to the actual electron flow. This convention is used in circuit analysis. It simplifies understanding of electrical systems. Direction of current is important for designing circuits. It affects polarity and connections. It is a basic concept in electricity.
20. Explain the importance of electrical measurements.
Answer:
Electrical measurements help monitor system performance. Instruments like ammeters and voltmeters are used. They ensure proper functioning of circuits. Measurements help detect faults and inefficiencies. They are essential for maintenance and safety. Accurate measurements improve system reliability. They are important in solar installations.
🔹 Solar Cells (Q21–Q40)
21. Explain the working principle of a solar cell.
Answer:
A solar cell works on the photovoltaic effect. When sunlight falls on the semiconductor material, photons transfer energy to electrons. This excites the electrons and creates electron-hole pairs. These charges are separated by an internal electric field. As a result, a potential difference is created across the cell. When connected to a circuit, current flows. This process converts light energy into electrical energy.
22. Describe the structure of a solar cell.
Answer:
A solar cell is made of semiconductor materials such as silicon. It consists of two layers: p-type and n-type. These layers form a p-n junction. When sunlight strikes the junction, it generates electron-hole pairs. Metal contacts are provided to collect current. The top layer allows light to enter, while the bottom supports conduction. This structure enables efficient energy conversion.
23. Explain the photovoltaic effect in detail.
Answer:
The photovoltaic effect occurs when light energy is converted into electrical energy. When photons strike a semiconductor, electrons gain energy and move to a higher energy level. This creates free electrons and holes. The electric field in the p-n junction separates these charges. This results in a flow of current. It is the basic principle behind solar energy generation.
24. Discuss the advantages of solar cells.
Answer:
Solar cells have no moving parts, making them reliable and durable. They require very low maintenance. They produce clean and pollution-free energy. They can be used in remote locations. Solar cells work with both direct and diffuse sunlight. They are scalable for small and large applications. These advantages make them widely used.
25. Explain the limitations of solar cells.
Answer:
Solar cells have relatively low efficiency compared to conventional power sources. Their performance depends on sunlight availability. They do not generate power at night. Initial installation cost is high. Efficiency decreases due to temperature and dust. Large area is required for higher output. These limitations affect their widespread use.
26. What is band gap energy and its importance?
Answer:
Band gap energy is the energy difference between the valence band and conduction band. It determines how easily electrons can move. A suitable band gap improves solar cell efficiency. Materials with proper band gap absorb sunlight effectively. It affects power output of the solar cell. Therefore, it is a key parameter in solar design.
27. Explain the concept of electron-hole pair generation.
Answer:
When sunlight strikes a semiconductor, it transfers energy to electrons. This energy excites electrons from the valence band to the conduction band. As electrons move, they leave behind holes. These are called electron-hole pairs. The separation of these charges generates electric current. This is the basis of solar energy conversion.
28. Describe the applications of solar cells.
Answer:
Solar cells are used in various applications such as solar panels, street lighting, and calculators. They are used in satellites and space systems. They provide power in remote areas. They are also used in water pumping systems. Solar cells are important for renewable energy generation. Their applications are increasing worldwide.
29. Explain why solar cells are called non-mechanical devices.
Answer:
Solar cells do not have any moving parts. They generate electricity directly from sunlight. This reduces wear and tear. It increases system reliability and lifespan. Unlike turbines, no mechanical motion is involved. This makes solar cells simple and efficient. Hence, they are called non-mechanical devices.
30. Discuss the effect of sunlight intensity on solar cell output.
Answer:
Higher sunlight intensity increases the number of photons striking the cell. This generates more electron-hole pairs. As a result, current increases. Voltage changes slightly with intensity. Power output increases with sunlight. Low sunlight reduces efficiency. Therefore, solar cell performance depends on sunlight intensity.
31. Explain the importance of semiconductor materials in solar cells.
Answer:
Semiconductors are essential for solar cell operation. They have controlled conductivity. They allow electron movement when exposed to light. Silicon is the most commonly used material. It helps convert sunlight into electricity efficiently. Without semiconductors, solar energy conversion is not possible. They form the core of PV technology.
32. What is the role of p-n junction in solar cells?
Answer:
The p-n junction creates an electric field inside the solar cell. This field separates electrons and holes. It ensures flow of current in one direction. It helps generate voltage across the cell. Without p-n junction, current generation is not possible. It is a critical part of solar cell design.
33. Explain why solar cells produce DC power.
Answer:
Solar cells generate current due to movement of electrons in one direction. This produces direct current (DC). The internal electric field ensures unidirectional flow. Unlike AC, the direction does not change. Therefore, solar output is always DC. It must be converted to AC for most applications.
34. Explain how temperature affects solar cell performance.
Answer:
High temperature reduces the efficiency of solar cells. It decreases voltage output. Excess heat affects semiconductor properties. This reduces overall power generation. Cooling improves performance. Therefore, temperature management is important in solar systems.
35. Describe the evolution of solar cell efficiency.
Answer:
Solar cell efficiency has improved over time. Early cells had very low efficiency. Modern cells have much higher efficiency. New materials and technologies are being developed. Research continues to improve performance. This makes solar energy more practical and affordable.
36. Explain the importance of light spectrum in solar cells.
Answer:
Solar cells respond differently to various wavelengths of light. Visible light contributes most to energy generation. Infrared and UV have less impact. Efficiency depends on how well the material absorbs light. Proper spectrum utilization improves performance. It is important in solar cell design.
37. What is solar irradiance?
Answer:
Solar irradiance is the amount of solar power received per unit area. It is measured in W/m². It affects solar panel output. Higher irradiance means more energy generation. It varies with location and time. It is important for system design.
38. Explain the concept of efficiency in solar cells.
Answer:
Efficiency is the ratio of output electrical power to input solar power. It shows how effectively sunlight is converted into electricity. Higher efficiency means better performance. It depends on material and design. Improving efficiency is a major goal in solar research.
39. What is the importance of solar cell area?
Answer:
Larger solar cell area captures more sunlight. This increases energy generation. Small cells produce limited power. Increasing area increases output. It is important for system sizing. Area directly affects power production.
40. Explain the need for combining solar cells.
Answer:
A single solar cell produces very low power. It cannot meet practical energy demands. Therefore, multiple cells are connected together. This increases voltage and current. It forms modules and panels. This makes solar power usable.
🔹 Solar Modules (Q41–Q60)
41. Explain how a solar module is formed.
Answer:
A solar module is formed by connecting multiple solar cells. These cells are arranged in series and parallel. They are encapsulated using protective materials. Glass, EVA, and backsheet are used. This structure protects cells and improves durability. The module provides higher power output.
42. Describe the construction of a solar module.
Answer:
A solar module consists of several layers. The top layer is glass for protection. Below it is EVA encapsulant. Solar cells are placed inside. A backsheet protects the rear. A frame provides structural support. A junction box connects electrical output.
43. Explain the importance of EVA in solar modules.
Answer:
EVA is used as an encapsulating material. It protects solar cells from moisture and dust. It allows maximum sunlight transmission. It provides mechanical support. It improves durability of the module. It is essential for long-term performance.
44. What is the role of backsheet in solar modules?
Answer:
The backsheet protects the rear side of the module. It provides insulation and durability. It prevents moisture entry. It enhances safety and reliability. It supports the module structure. It is an important protective layer.
45. Explain the working of solar module connections.
Answer:
Solar cells are connected in series to increase voltage. Parallel connections increase current. These combinations form modules. Modules are further connected to form arrays. Proper connections ensure desired output. It is important for system design.
46. What is the difference between module and panel?
Answer:
A module is a basic unit made of solar cells. A panel may include one or more modules. Panels are ready for installation. Modules are components of panels. Both are used for power generation. The terms are often used interchangeably.
47. Explain the importance of solar arrays.
Answer:
Solar arrays are formed by combining multiple panels. They produce large amounts of power. They are used in large-scale systems. Arrays increase capacity and efficiency. They are used in solar power plants. They are essential for high energy demand.
48. Discuss the lifespan and reliability of solar modules.
Answer:
Solar modules have a lifespan of 20–30 years. They are highly reliable with low failure rates. They require minimal maintenance. Manufacturers provide long warranties. Their performance degrades slowly. They are suitable for long-term use.
49. Explain why glass is used in solar modules.
Answer:
Glass is used as the top layer of solar modules. It allows sunlight to pass through. It protects cells from damage. It is strong and weather-resistant. It increases module durability. It ensures efficient performance.
50. Explain the importance of junction box.
Answer:
The junction box connects the electrical output of the module. It houses terminals and wiring. It protects connections from environmental damage. It ensures safe power transmission. It is located at the back of the module.
51. Explain module efficiency.
Answer:
Module efficiency indicates how well a module converts sunlight into electricity. It depends on material and design. Higher efficiency means more power output. It affects system performance. It is important for selecting panels.
52. What factors affect module performance?
Answer:
Module performance depends on sunlight intensity, temperature, and shading. Dust and dirt reduce efficiency. Orientation and tilt angle also affect output. Proper maintenance improves performance. Environmental conditions play a major role.
53. Explain the need for solar module installation angle.
Answer:
The angle of installation affects sunlight absorption. Proper tilt ensures maximum exposure. It increases energy generation. Incorrect angle reduces efficiency. It depends on location and latitude. It is important for system design.
54. Describe the role of solar panels in a system.
Answer:
Solar panels capture sunlight and convert it into electricity. They are the primary energy source. They generate DC power. This power is used or stored. Panels are essential for solar systems.
55. Explain the importance of shading in solar systems.
Answer:
Shading reduces the amount of sunlight reaching panels. It decreases power output significantly. Even partial shading affects performance. It can damage cells in some cases. Proper placement avoids shading issues.
56. Explain the concept of solar panel rating.
Answer:
Solar panel rating indicates its maximum power output. It is measured in watts. It depends on test conditions. It helps compare different panels. It is important for system sizing.
57. What is module degradation?
Answer:
Module degradation is the gradual reduction in performance over time. It occurs due to environmental factors. It reduces efficiency slowly. It is a normal process. Good quality modules degrade slowly.
58. Explain the importance of solar mounting structures.
Answer:
Mounting structures support solar panels. They hold panels at proper angle. They provide stability and safety. They resist wind and weather. Proper structure ensures long life.
59. Explain how modules are connected in a system.
Answer:
Modules are connected in series and parallel. Series increases voltage. Parallel increases current. These combinations form arrays. Proper connections ensure desired output.
60. Why are solar modules considered reliable?
Answer:
Solar modules have no moving parts. They have long lifespan. They require minimal maintenance. They have low failure rates. They perform consistently over time.
🔹 Charge Controller (Q61–Q75)
61. Explain the function of a solar charge controller.
Answer:
A solar charge controller regulates the voltage and current coming from solar panels to the battery. It ensures that the battery is charged safely and efficiently. It prevents overcharging and over-discharging of the battery. It also protects the system from damage due to excess voltage. By controlling energy flow, it improves system efficiency. It plays a crucial role in off-grid solar systems. Overall, it enhances battery life and system reliability.
62. Why is a charge controller necessary in solar systems?
Answer:
A charge controller is necessary to protect batteries from damage. Without it, batteries may get overcharged or deeply discharged. This can reduce battery life and efficiency. It also prevents reverse current flow from battery to panels. It ensures safe charging conditions. It improves overall system performance. Therefore, it is essential in battery-based systems.
63. Explain overcharging and its effects on batteries.
Answer:
Overcharging occurs when a battery receives more charge than its capacity. This leads to overheating and excessive gas formation. It can damage battery plates and reduce lifespan. It may also cause safety hazards. Overcharging reduces efficiency and performance. A charge controller prevents this condition. Proper regulation ensures battery safety.
64. Explain over-discharging and its effects.
Answer:
Over-discharging occurs when a battery is used beyond its safe limit. It can permanently damage battery cells. It reduces storage capacity and lifespan. It affects performance and reliability. Repeated deep discharge shortens battery life. A charge controller prevents this issue. It disconnects load when voltage is too low.
65. Describe the importance of battery protection.
Answer:
Battery protection ensures safe operation and long life of batteries. It prevents overcharging, over-discharging, and overheating. It maintains proper voltage levels. It improves system reliability and safety. Protected batteries perform better and last longer. It reduces maintenance cost. It is essential in solar systems.
66. Explain the concept of reverse current and its prevention.
Answer:
Reverse current is the flow of electricity from battery to solar panel, usually at night. It results in energy loss and can damage components. A charge controller prevents reverse current. It blocks unwanted current flow. This improves system efficiency. It ensures energy is used properly.
67. Explain how a charge controller improves system efficiency.
Answer:
A charge controller ensures optimal charging of batteries. It prevents energy loss and regulates power flow. It matches panel output with battery requirements. It avoids damage due to improper charging. This improves energy utilization. It increases system performance. It helps achieve maximum efficiency.
68. Describe the role of temperature compensation.
Answer:
Temperature affects battery charging efficiency. High temperature can lead to overcharging, while low temperature reduces charging. Temperature compensation adjusts voltage based on temperature. It ensures proper charging conditions. It prevents battery damage. It improves performance and lifespan. It is an important feature in controllers.
69. Explain load control in charge controllers.
Answer:
Load control is a function that manages power supply to connected loads. It disconnects loads when battery voltage is low. This prevents deep discharge. It ensures safe battery operation. It also improves system efficiency. It helps maintain proper energy usage. It is useful in off-grid systems.
70. Explain the importance of charge controllers in off-grid systems.
Answer:
Off-grid systems rely on batteries for energy storage. Charge controllers ensure safe battery charging. They regulate voltage and current. They prevent damage and energy loss. They improve reliability and efficiency. Without controllers, system performance is affected. They are essential for proper functioning.
71. Explain the working of a charge controller.
Answer:
A charge controller monitors battery voltage continuously. It adjusts charging current accordingly. It stops charging when battery is full. It disconnects load during low voltage. It prevents reverse current flow. It maintains safe operation. It ensures efficient energy management.
72. Describe different functions of a charge controller.
Answer:
A charge controller performs multiple functions. It regulates charging voltage and current. It protects batteries from damage. It prevents reverse current flow. It controls load operation. It improves system efficiency. It ensures safe and reliable operation.
73. Explain the need for regulated charging.
Answer:
Batteries require specific voltage levels for charging. Unregulated charging can cause damage. It leads to overheating and reduced lifespan. Regulated charging ensures proper energy flow. It maintains battery health. It improves efficiency. It is essential for safe operation.
74. Explain battery maintenance using charge controllers.
Answer:
Charge controllers help maintain battery health. They prevent overcharging and deep discharge. They adjust charging based on temperature. They ensure proper voltage levels. This reduces maintenance needs. It increases battery life. It improves overall system performance.
75. Explain system safety in solar systems.
Answer:
System safety ensures protection of components and users. Charge controllers prevent electrical faults. They regulate voltage and current. They avoid overheating and damage. Safety features improve reliability. Proper design ensures safe operation. It is critical for solar installations.
🔹 Inverter (Q76–Q85)
76. Explain the function of a solar inverter.
Answer:
A solar inverter converts DC power from solar panels into AC power. This allows use of electricity in household appliances. It is an essential component of solar systems. It ensures compatibility with grid and loads. It improves system usability. It helps supply power efficiently.
77. Why is DC converted into AC?
Answer:
Most electrical appliances operate on AC power. Solar panels generate DC power. Therefore, conversion is necessary. Inverters perform this function. It ensures proper functioning of appliances. It allows grid connection. It is essential for practical usage.
78. Explain the role of inverters in solar systems.
Answer:
Inverters act as the bridge between solar panels and appliances. They convert DC to AC power. They ensure proper voltage and frequency. They improve system efficiency. They enable grid connection. They are essential for solar installations.
79. Describe the types of power converters.
Answer:
Power converters include rectifiers, DC-DC converters, and inverters. Rectifiers convert AC to DC. DC-DC converters change voltage levels. Inverters convert DC to AC. These devices are used in electrical systems. They help manage power flow.
80. Explain the working of a rectifier.
Answer:
A rectifier converts AC into DC power. It uses diodes to allow current flow in one direction. It is used in electronic devices. It provides DC supply from AC source. It is important in power conversion systems.
81. Explain the working of DC-DC converters.
Answer:
DC-DC converters change one DC voltage level to another. They can step up or step down voltage. They are used in solar systems. They improve efficiency. They ensure proper voltage supply. They are important in power electronics.
82. Explain the importance of inverter in grid systems.
Answer:
In grid systems, inverter synchronizes solar power with grid supply. It converts DC to AC. It ensures proper voltage and frequency. It allows export of excess power. It improves system efficiency. It is essential for grid connection.
83. Describe the importance of AC power.
Answer:
AC power is widely used in homes and industries. It can be transmitted over long distances. It is suitable for high power applications. Most appliances are designed for AC. It is the standard supply form.
84. Explain inverter output characteristics.
Answer:
Inverter output is AC power. It typically provides 230V in India. It maintains proper frequency. It ensures stable power supply. It matches grid standards. It allows safe operation of appliances.
85. Explain why inverters are essential in solar systems.
Answer:
Inverters make solar power usable. They convert DC to AC. They enable use of appliances. They allow grid connection. They improve efficiency. They are essential for complete solar systems.
🔹 Batteries (Q86–Q95)
86. Explain the working of a battery.
Answer:
A battery stores energy in chemical form. During discharge, it converts chemical energy into electrical energy. Electrons flow through the external circuit. This powers connected devices. It is used for energy storage. It ensures continuous supply.
87. Describe battery components.
Answer:
A battery consists of anode, cathode, and electrolyte. The anode releases electrons. The cathode receives electrons. The electrolyte allows ion movement. These components enable energy conversion.
88. Explain the role of batteries in solar systems.
Answer:
Batteries store excess energy produced during the day. They supply power at night or during low sunlight. They ensure continuous power supply. They improve system reliability. They are essential in off-grid systems.
89. Explain battery charging and discharging.
Answer:
Charging stores energy in chemical form. Discharging releases stored energy. During discharge, electrons flow through the circuit. During charging, external energy restores chemical balance. This cycle repeats.
90. Explain the importance of battery storage.
Answer:
Battery storage ensures energy availability when sunlight is not present. It stabilizes power supply. It improves system reliability. It reduces dependence on grid. It is essential for off-grid systems.
91. Explain anode and cathode functions.
Answer:
The anode releases electrons during discharge. It is the negative terminal. The cathode receives electrons. It is the positive terminal. Both are essential for energy flow.
92. Explain the role of electrolyte.
Answer:
Electrolyte allows ion movement between electrodes. It maintains charge balance. It supports chemical reactions. It is essential for battery operation.
93. Explain battery efficiency.
Answer:
Battery efficiency indicates how well energy is stored and used. Losses occur during charging and discharging. Higher efficiency improves performance. It reduces energy loss.
94. Explain battery maintenance.
Answer:
Proper maintenance improves battery life. It includes checking voltage and cleaning terminals. Charge controllers help maintain batteries. Maintenance ensures safety and performance.
95. Explain battery life factors.
Answer:
Battery life depends on usage, temperature, and charging conditions. Overcharging reduces life. Proper care increases lifespan. Good maintenance improves performance.
🔹 Load & Feasibility (Q96–Q100)
96. Explain electrical load and its types.
Answer:
Electrical load is any device that consumes electricity. It converts electrical energy into useful forms. Loads can be continuous or intermittent. Proper understanding is important for system design.
97. Explain load calculation in solar systems.
Answer:
Load calculation determines total energy consumption. It considers power and usage time. It helps size solar systems. Accurate calculation ensures proper design.
98. Explain energy consumption calculation.
Answer:
Energy = Power × Time. It is measured in kWh. It helps estimate electricity usage. It is important for system sizing.
99. Explain solar feasibility study.
Answer:
Feasibility study evaluates project viability. It considers technical and financial factors. It ensures proper planning. It reduces risks.
100. Explain importance of feasibility study.
Answer:
It ensures project success. It evaluates costs and benefits. It reduces risk. It helps in decision making.