SECTION A – Objective Type Question Bank

Part 1: 100 Multiple Choice Questions (MCQs)

MCQs (1–25)

1. What does PV stand for in solar systems?
   A. Power Voltage
   B. Photo Voltaic
   C. Public Voltage
   D. Power Variant
   Answer: B
2. Which component converts DC into AC?
   A. Battery
   B. Inverter
   C. Charge Controller
   D. Junction Box
   Answer: B
3. Which mounting type is used on rooftops?
   A. Pole Mounting
   B. Roof Mounting
   C. Ground Mounting
   D. Floating Mounting
   Answer: B
4. Which factor most affects solar panel output?
   A. Color of roof
   B. Sunlight intensity
   C. Wire size only
   D. Paint thickness
   Answer: B
5. Which direction should solar panels face in Northern Hemisphere?
   A. North
   B. East
   C. South
   D. West
   Answer: C
6. Which device protects against overcurrent?
   A. Fuse
   B. Module
   C. Clamp
   D. Rail
   Answer: A
7. What is used to store solar energy?
   A. Battery
   B. Cable tray
   C. Junction box
   D. SPD only
   Answer: A
8. Which is a common solar inverter type?
   A. String inverter
   B. Steam inverter
   C. Water inverter
   D. Diesel inverter
   Answer: A
9. Which test checks insulation quality?
   A. IR Test
   B. Torque Test
   C. Load Test
   D. Soil Test
   Answer: A
10. Which device combines multiple DC strings?
    A. ACDB
    B. DCCB / Combiner Box
    C. Meter
    D. Transformer
    Answer: B
11. Which study checks shadow effect?
    A. Load study
    B. Shadow analysis
    C. Tax study
    D. Wiring study
    Answer: B
12. Which material is commonly used for earthing strip?
    A. Wood
    B. GI/Copper
    C. Rubber
    D. Plastic
    Answer: B
13. What is the approximate land required for 1 MW solar plant?
    A. 1 acre
    B. 2 acres
    C. 4–5 acres
    D. 10 acres
    Answer: C
14. Which instrument measures solar radiation?
    A. Pyranometer
    B. Voltmeter
    C. Clamp meter
    D. Ammeter
    Answer: A
15. Which project chart shows schedule timeline?
    A. Pie Chart
    B. Gantt Chart
    C. Barometer
    D. Flow Meter
    Answer: B
16. Which panel type uses sunlight from both sides?
    A. Mono panel
    B. Bifacial panel
    C. Poly panel
    D. Thin steel panel
    Answer: B
17. Which parameter indicates actual vs model production?
    A. Voltage Ratio
    B. Performance Ratio
    C. Height Ratio
    D. Cable Ratio
    Answer: B
18. Which is NOT a site selection factor?
    A. Solar resource
    B. Climate
    C. Grid availability
    D. Curtain color
    Answer: D
19. Which equipment is used for fall safety?
    A. Harness
    B. Clamp meter
    C. Battery
    D. Rail
    Answer: A
20. Which test checks module hot spots?
    A. Thermal Imaging
    B. Water Test
    C. Paint Test
    D. Sand Test
    Answer: A
21. Which current comes from solar module?
    A. AC
    B. DC
    C. RF
    D. Hybrid only
    Answer: B
22. Which body is nodal ministry for renewable energy in India?
    A. RBI
    B. MNRE
    C. SEBI
    D. NITI
    Answer: B
23. Which component supports modules physically?
    A. Racking Structure
    B. Battery
    C. Meter
    D. Fuse
    Answer: A
24. Which system works without grid?
    A. Grid-tie
    B. Off-grid
    C. Hybrid TV
    D. AC only
    Answer: B
25. Which factor increases panel output most?
    A. Proper tilt angle
    B. Dark paint
    C. Thicker cable tray
    D. Larger roof door
    Answer: A

26. Which instrument is commonly used to check voltage?
    A. Voltmeter
    B. Hammer
    C. Spanner
    D. Ladder
    Answer: A
27. Which device disconnects solar supply during maintenance?
    A. Isolator / Disconnect Switch
    B. Rail Clamp
    C. Module Frame
    D. Tracker
    Answer: A
28. Which mounting type follows the sun automatically?
    A. Pole Mount
    B. Fixed Tilt
    C. Tracking System
    D. Roof Hook
    Answer: C
29. Which cable is generally used on DC side of PV plant?
    A. Solar DC Cable
    B. Telephone Cable
    C. Fiber Rope
    D. Coaxial Cable
    Answer: A
30. Which component measures exported/imported energy in net metering?
    A. Bi-directional Meter
    B. Junction Box
    C. Clamp
    D. Relay Rail
    Answer: A
31. Which test checks correct positive and negative connection?
    A. Polarity Test
    B. Soil Test
    C. Paint Test
    D. Noise Test
    Answer: A
32. What is the full form of BOM in project planning?
    A. Bill of Materials
    B. Bank of Modules
    C. Board of Metering
    D. Base of Mounting
    Answer: A
33. Which project phase comes after planning?
    A. Execution
    B. Recycling
    C. Closure only
    D. Banking
    Answer: A
34. Which structure component supports rails on roofs?
    A. Roof Hook
    B. Inverter
    C. Battery Cell
    D. SPD Fuse
    Answer: A
35. Which item protects equipment from surge voltage?
    A. SPD
    B. Nut Bolt
    C. Clamp Meter
    D. Purlin
    Answer: A
36. Which study checks whether solar project is financially viable?
    A. Feasibility Study
    B. Cleaning Study
    C. Cable Study
    D. Weather Painting Study
    Answer: A
37. Which parameter shows inverter conversion performance?
    A. Inverter Efficiency
    B. Roof Ratio
    C. Wind Ratio
    D. Earth Ratio
    Answer: A
38. Which item is mandatory for electrical safety?
    A. PPE
    B. Wallpaper
    C. Tile paint
    D. PVC sticker only
    Answer: A
39. Which type of solar project is installed on water bodies?
    A. Floating Solar
    B. Desert Solar
    C. Pole Solar
    D. Portable Solar
    Answer: A
40. Which process confirms system is ready to operate?
    A. Commissioning
    B. Coloring
    C. Packaging
    D. Drilling
    Answer: A
41. Which side of inverter receives solar panel input?
    A. DC Side
    B. AC Side
    C. Neutral Side
    D. Earthing Side
    Answer: A
42. Which side of inverter supplies load/grid output?
    A. AC Side
    B. DC Side
    C. Frame Side
    D. Junction Side
    Answer: A
43. Which document gives construction-approved drawings?
    A. IFC Drawing
    B. ATM Slip
    C. Sales Invoice
    D. Warranty Card
    Answer: A
44. Which team handles module procurement and delivery?
    A. Procurement Team
    B. Gardening Team
    C. Finance Only
    D. Security Only
    Answer: A
45. Which weather factor can reduce generation?
    A. Shading
    B. Clean glass
    C. Correct tilt
    D. Tight bolts
    Answer: A
46. Which parameter is checked before connecting string to combiner box?
    A. Open Circuit Voltage
    B. Paint Shade
    C. Roof Color
    D. Soil Weight
    Answer: A
47. Which item helps route cables neatly?
    A. Cable Tray
    B. Module Clamp
    C. Ladder Shoe
    D. Solar Cell
    Answer: A
48. Which phase includes civil, mechanical and electrical work?
    A. Construction Phase
    B. Approval Phase
    C. Audit Phase
    D. Refund Phase
    Answer: A
49. Which maintenance task improves solar panel efficiency?
    A. Regular Cleaning
    B. Painting Modules
    C. Removing Labels
    D. Reducing Tilt Daily
    Answer: A
50. Which factor is most important for long life of plant?
    A. Proper O&M
    B. Random shutdowns
    C. Loose wiring
    D. Water leakage
    Answer: A

51. Which material is commonly used for module frame?
    A. Aluminium
    B. Wood
    C. Paper
    D. Rubber
    Answer: A
52. Which solar system uses batteries as backup?
    A. Off-grid System
    B. Streetlight Pole only
    C. Grid-only AC system
    D. Diesel system
    Answer: A
53. Which device regulates charging of batteries?
    A. Charge Controller
    B. Junction Box
    C. Rail Clamp
    D. Tracker Arm
    Answer: A
54. Which document is useful for daily progress reporting?
    A. DPR
    B. PAN Card
    C. Passport
    D. Receipt Book
    Answer: A
55. Which factor is checked in rooftop installations?
    A. Roof Load Capacity
    B. Paint Thickness
    C. Window Height
    D. Room Size
    Answer: A
56. Which study checks soil condition for ground mount plants?
    A. Soil Investigation
    B. Battery Test
    C. Cable Test
    D. IR Scan
    Answer: A
57. Which device protects people from electric shock leakage?
    A. Earthing System
    B. Nut Bolt
    C. Rail Joint
    D. Label Sticker
    Answer: A
58. Which of the following is a renewable energy source?
    A. Solar Energy
    B. Diesel
    C. Coal
    D. Petrol
    Answer: A
59. Which component is mounted before installing modules?
    A. Mounting Structure
    B. Net Meter
    C. Battery Water
    D. Invoice Board
    Answer: A
60. Which phase includes obtaining permits and approvals?
    A. Planning Phase
    B. Washing Phase
    C. Shutdown Phase
    D. Disposal Phase
    Answer: A
61. Which organization approves many renewable policies in India?
    A. MNRE
    B. RBI
    C. LIC
    D. IRCTC
    Answer: A
62. Which term means total installed power capacity?
    A. System Capacity
    B. Paint Capacity
    C. Roof Capacity
    D. Bolt Capacity
    Answer: A
63. Which item is used to tighten bolts to correct value?
    A. Torque Wrench
    B. Hammer
    C. Cutter
    D. Spade
    Answer: A
64. Which test verifies grounding resistance?
    A. Earth Resistance Test
    B. Water Test
    C. Weight Test
    D. Noise Test
    Answer: A
65. Which component converts sunlight directly into electricity?
    A. Solar Cell
    B. Transformer
    C. Relay
    D. Meter Box
    Answer: A
66. Which layout tool is used for schedule planning?
    A. Gantt Chart
    B. Pie Plate
    C. Flow Switch
    D. Voltage Card
    Answer: A
67. Which wiring carries power from inverter to load panel?
    A. AC Wiring
    B. DC String Cable
    C. Earthing Wire Only
    D. Sensor Cable Only
    Answer: A
68. Which panel technology can capture rear reflected light?
    A. Bifacial Panel
    B. Wooden Panel
    C. PVC Panel
    D. Steel Panel
    Answer: A
69. Which maintenance method helps detect hot spots?
    A. Thermal Imaging
    B. Painting
    C. Sweeping Floor
    D. Soil Digging
    Answer: A
70. Which component sends data for monitoring?
    A. Data Logger
    B. Roof Hook
    C. Clamp Nut
    D. Rail Joint
    Answer: A
71. Which value compares planned vs actual schedule progress?
    A. SPI
    B. VOC
    C. RPM
    D. GST
    Answer: A
72. Which value compares earned value with actual cost?
    A. CPI
    B. Hz
    C. Nm
    D. Ah
    Answer: A
73. Which system can export extra power to utility grid?
    A. Grid-tie System
    B. Lantern System
    C. Torch System
    D. Pump only system
    Answer: A
74. Which item should be avoided on roof during installation?
    A. Loose tools and hardware
    B. Safety harness
    C. Ladder tie
    D. PPE gloves
    Answer: A
75. Which condition is unsafe for panel installation?
    A. Windy or rainy weather
    B. Clear weather
    C. Morning sunlight
    D. Dry roof surface
    Answer: A

76. Which document lists all required materials for a project?
    A. Bill of Materials
    B. Salary Sheet
    C. Attendance Register
    D. Warranty Card
    Answer: A
77. Which factor is important for module selection?
    A. Power Rating
    B. Wall Color
    C. Cable Tray Size Only
    D. Roof Paint
    Answer: A
78. Which parameter indicates module performance under heat?
    A. Temperature Coefficient
    B. Sound Level
    C. Bolt Pressure
    D. Roof Width
    Answer: A
79. Which protection device is used in AC distribution board?
    A. MCCB
    B. Wooden Clamp
    C. Rail Hook
    D. Glass Strip
    Answer: A
80. Which activity is done before commissioning?
    A. Pre-commissioning Tests
    B. Roof Painting
    C. Landscaping Only
    D. Advertising
    Answer: A
81. Which metric equals actual production divided by model production?
    A. Performance Ratio
    B. Capacity Weight
    C. Torque Ratio
    D. Voltage Gain
    Answer: A
82. Which component may contain bypass diodes?
    A. Junction Box of Module
    B. Ladder
    C. Rail Clamp
    D. Meter Body
    Answer: A
83. Which phase includes vendor selection and sourcing?
    A. Procurement Phase
    B. Shutdown Phase
    C. Recycling Phase
    D. Billing Phase
    Answer: A
84. Which chart can show manpower loading?
    A. Histogram / Bar Chart
    B. Pie Only
    C. Voltage Curve
    D. Pipe Layout
    Answer: A
85. Which item is essential for module cleaning?
    A. Water Availability
    B. Roof Paint
    C. Cable Label
    D. Nut Box
    Answer: A
86. Which device prevents islanding in grid systems?
    A. Protection Relay
    B. Module Clamp
    C. Purlin Bolt
    D. Cleaning Brush
    Answer: A
87. Which study estimates yearly energy generation?
    A. Energy Yield Analysis
    B. Paint Analysis
    C. Room Survey
    D. Bolt Study
    Answer: A
88. Which phase comes after procurement in lifecycle?
    A. Construction / EPC
    B. Tax Filing
    C. Advertisement
    D. Shutdown
    Answer: A
89. Which component is optional in some 1 MW systems?
    A. Solar Batteries
    B. Solar Modules
    C. Inverter
    D. Structure
    Answer: A
90. Which unit commonly expresses plant capacity?
    A. kW / MW
    B. Liter
    C. Meter only
    D. Kg only
    Answer: A
91. Which issue can result from loose electrical connections?
    A. Potential Hazard
    B. More shading
    C. Better efficiency
    D. Less sunlight
    Answer: A
92. Which process ensures correct alignment of structure posts?
    A. Verticality Check
    B. Painting Check
    C. Billing Check
    D. Tax Check
    Answer: A
93. Which component sends AC power to the grid?
    A. Inverter
    B. Module Glass
    C. Mounting Clamp
    D. Earthing Rod
    Answer: A
94. Which policy supports rooftop solar consumers?
    A. Net Metering
    B. Rain Metering
    C. Heat Billing
    D. Fuel Subsidy
    Answer: A
95. Which emerging technology is mentioned in study notes?
    A. Perovskite Solar Cells
    B. Diesel Cells
    C. Plastic Coal Cells
    D. Steam Cells
    Answer: A
96. Which system monitors plant output remotely?
    A. Remote Monitoring System
    B. Ladder System
    C. Roof Hook System
    D. Fence System
    Answer: A
97. Which item should be calibrated before bolt tightening?
    A. Torque Wrench
    B. Spanner Handle
    C. Hammer Head
    D. Ladder Step
    Answer: A
98. Which result is expected from regular maintenance?
    A. Reduced Downtime
    B. Lower Sunlight
    C. Higher Dust
    D. Weak Structure
    Answer: A
99. Which project objective includes reducing carbon footprint?
    A. Sustainability Goal
    B. Painting Goal
    C. Lighting Goal Only
    D. Storage Goal Only
    Answer: A
100. Which overall benefit comes from proper installation?
     A. Higher Efficiency and Long Life
     B. Lower Sunlight
     C. More Damage
     D. Higher Noise
     Answer: A

50 Questions with Answers

(Advanced Diploma Solar Technology – Semester 2| Paper 2)

1. PV stands for __________.
   Answer: Photovoltaic
2. Solar panels convert sunlight into __________ energy.
   Answer: electrical
3. The device that converts DC into AC is called an __________.
   Answer: inverter
4. A battery stores __________ for later use.
   Answer: energy
5. Solar panels facing south are preferred in the __________ hemisphere.
   Answer: northern
6. The device used for net metering is a __________ meter.
   Answer: bi-directional
7. The structure used to support solar modules is called __________.
   Answer: mounting structure
8. The angle of solar panel installation is called __________.
   Answer: tilt
9. Excess current protection is provided by a __________.
   Answer: fuse
10. Proper __________ reduces risk of electric shock.
    Answer: earthing
11. The box used to combine multiple DC strings is called a __________ box.
    Answer: combiner
12. The process of checking shadows on panels is called __________ analysis.
    Answer: shading
13. A project time planning chart is called a __________ chart.
    Answer: Gantt
14. The full form of BOM is Bill of __________.
    Answer: Materials
15. Solar systems connected to utility supply are called __________ systems.
    Answer: grid-tie
16. A standalone solar system is called an __________ system.
    Answer: off-grid
17. The Ministry of New and Renewable Energy is abbreviated as __________.
    Answer: MNRE
18. The test used to check cable insulation is __________ test.
    Answer: IR
19. Hot spots in modules can be detected using __________ imaging.
    Answer: thermal
20. The expected life of a solar plant is often more than __________ years.
    Answer: 25
21. The cable carrying solar panel output usually carries __________ current.
    Answer: DC
22. The cable carrying inverter output usually carries __________ current.
    Answer: AC
23. The process of starting plant operation after testing is called __________.
    Answer: commissioning
24. The amount of sunlight available at a site is called solar __________.
    Answer: resource
25. Roof strength checking is called roof load __________ test.
    Answer: capacity
26. For 1 MW solar plant, about 4 to 5 __________ of land may be required.
    Answer: acres
27. A device used to measure voltage is a __________.
    Answer: voltmeter
28. Loose electrical connections may create __________ hazards.
    Answer: fire
29. Modules should be cleaned __________ to improve efficiency.
    Answer: regularly
30. The support members below modules are called __________.
    Answer: rails
31. The positive and negative connection check is called __________ check.
    Answer: polarity
32. A module can be installed in portrait or __________ orientation.
    Answer: landscape
33. In rooftop systems, panels are fixed using roof hooks and __________.
    Answer: clamps
34. The unit of large plant capacity is __________.
    Answer: MW
35. The unit of small system capacity is __________.
    Answer: kW
36. The ratio of actual to model production is called performance __________.
    Answer: ratio
37. The device that records system data is called a data __________.
    Answer: logger
38. Safety helmets, gloves and shoes are examples of __________.
    Answer: PPE
39. During rainy weather, solar installation should be __________.
    Answer: avoided
40. The document approved for construction is called __________ drawing.
    Answer: IFC
41. Ground-mounted solar plants may need soil __________.
    Answer: investigation
42. The metal strip used in earthing may be GI or __________.
    Answer: copper
43. The process of purchasing equipment is called __________.
    Answer: procurement
44. The cost return period of investment is called __________ period.
    Answer: payback
45. Solar power helps reduce carbon __________.
    Answer: emissions
46. Panels that generate from both front and rear sides are called __________ panels.
    Answer: bifacial
47. The engineer checks bolts using a __________ wrench.
    Answer: torque
48. The phase before construction is called __________ phase.
    Answer: planning
49. The electrical distribution box on AC side is called __________.
    Answer: ACDB
50. Proper maintenance increases system __________.
    Answer: lifespan

50 Questions with Answers

(Advanced Diploma Solar Technology – Semester 2 | Paper 2)

1. Solar panels convert sunlight into electrical energy.
   Answer: True
2. An inverter converts AC power into DC power in solar systems.
   Answer: False
3. Earthing helps reduce electric shock risk.
   Answer: True
4. Solar panels should ideally face south in the Northern Hemisphere.
   Answer: True
5. A battery is used to store electrical energy.
   Answer: True
6. A fuse is used for overcurrent protection.
   Answer: True
7. Net metering allows export of excess power to the grid.
   Answer: True
8. A combiner box combines multiple DC strings.
   Answer: True
9. Solar modules generate AC power directly.
   Answer: False
10. Roof load capacity is checked in rooftop projects.
    Answer: True
11. Soil investigation is useful for ground-mounted systems.
    Answer: True
12. Gantt chart is used for project scheduling.
    Answer: True
13. PPE stands for Personal Protective Equipment.
    Answer: True
14. Rainy weather is ideal for solar panel installation.
    Answer: False
15. DC cables are used on the solar panel side.
    Answer: True
16. AC cables are used after inverter output.
    Answer: True
17. Thermal imaging can help detect hot spots.
    Answer: True
18. BOM means Bill of Materials.
    Answer: True
19. A solar plant generally has zero maintenance needs forever.
    Answer: False
20. Proper cleaning can improve solar panel performance.
    Answer: True
21. A bidirectional meter measures import and export energy.
    Answer: True
22. MNRE is related to renewable energy in India.
    Answer: True
23. Commissioning is done after installation and testing.
    Answer: True
24. Solar plants increase carbon emissions.
    Answer: False
25. Earthing resistance should be properly maintained.
    Answer: True
26. Shading can reduce solar panel output.
    Answer: True
27. Inverter efficiency affects overall plant performance.
    Answer: True
28. Panels can be installed in portrait or landscape orientation.
    Answer: True
29. Loose electrical connections can be hazardous.
    Answer: True
30. Off-grid systems may use batteries.
    Answer: True
31. ACDB is used on AC side distribution.
    Answer: True
32. Module mounting structure supports panels mechanically.
    Answer: True
33. Net metering is unrelated to solar rooftop systems.
    Answer: False
34. Solar energy is a renewable source.
    Answer: True
35. A torque wrench is used for proper bolt tightening.
    Answer: True
36. Water availability may be considered for module cleaning.
    Answer: True
37. One MW plant may need around 4–5 acres land.
    Answer: True
38. Performance ratio compares actual and expected generation.
    Answer: True
39. Protective relays may be required for grid synchronization.
    Answer: True
40. Solar modules work better when permanently shaded.
    Answer: False
41. Procurement means purchasing project materials.
    Answer: True
42. DC polarity check is important before connection.
    Answer: True
43. Remote monitoring can track plant generation.
    Answer: True
44. Structural alignment has no importance in solar plants.
    Answer: False
45. Bifacial modules can use reflected rear-side light.
    Answer: True
46. Inverter converts DC to AC for loads/grid.
    Answer: True
47. Solar project planning helps optimize resources.
    Answer: True
48. Regular maintenance can reduce downtime.
    Answer: True
49. Safety harnesses are useful for rooftop installation.
    Answer: True
50. Proper installation can increase system life and efficiency.
    Answer: True