SOLAR PV57101-11 INTRODUCTION TO SOLAR PHOTOVOLTAICS
VERIFIED EXAM SOLUTIONS - COMPREHENSIVE QUESTIONS AND
ANSWERS - CURRENT VERSION (2026/2027)
1. What is the photovoltaic effect?
• A) The heating of a surface by sunlight
• B) The conversion of light energy directly into electrical energy
• C) The reflection of sunlight from solar panels
• D) The storage of solar energy in batteries
ANSWER : B
2. Who discovered the photovoltaic effect?
• A) Albert Einstein
• B) Edmond Becquerel
• C) Thomas Edison
• D) Nikola Tesla
ANSWER : B
3. What is the approximate power of solar radiation reaching Earth's
surface on a clear day?
• A) 100 W/m²
• B) 500 W/m²
• C) 1000 W/m²
• D) 2000 W/m²
ANSWER : C
,4. What does "AM1.5" refer to in solar terminology?
• A) A type of solar panel
• B) Air Mass 1.5 - standard solar spectrum
• C) Afternoon measurement at 1:50 PM
• D) A solar inverter model
ANSWER : B
5. What percentage of the sun's energy reaches Earth's surface?
• A) 10%
• B) 30%
• C) 50%
• D) 70%
ANSWER : B
6. What is insolation?
• A) The insulation material used in solar panels
• B) The amount of solar radiation reaching a surface
• C) The isolation of solar cells
• D) A type of solar inverter
ANSWER : B
7. What is the solar constant?
• A) 1000 W/m²
• B) 1200 W/m²
• C) 1367 W/m²
• D) 1500 W/m²
,ANSWER : C
8. Which wavelength range contains most of the sun's energy?
• A) Ultraviolet
• B) Visible light
• C) Infrared
• D) X-rays
ANSWER : B
9. What is the approximate surface temperature of the sun?
• A) 3,500°C
• B) 5,500°C
• C) 7,500°C
• D) 10,000°C
ANSWER : B
10. What does STC stand for in solar PV terminology?
• A) Solar Testing Conditions
• B) Standard Test Conditions
• C) System Temperature Control
• D) Solar Thermal Capacity
ANSWER : B
11. Under STC, what is the standard solar irradiance level?
• A) 800 W/m²
• B) 900 W/m²
• C) 1000 W/m²
, • D) 1100 W/m²
ANSWER : C
12. What is the standard cell temperature under STC?
• A) 20°C
• B) 25°C
• C) 30°C
• D) 35°C
ANSWER : B
13. What is the air mass (AM) value at the equator at solar noon?
• A) AM0
• B) AM1.0
• C) AM1.5
• D) AM2.0
ANSWER : B
14. What does PV stand for?
• A) Power Voltage
• B) Photovoltaic
• C) Panel Voltage
• D) Positive Volt
ANSWER : B
15. Which part of the electromagnetic spectrum can solar cells convert to
electricity?
• A) Only visible light
• B) Only ultraviolet
VERIFIED EXAM SOLUTIONS - COMPREHENSIVE QUESTIONS AND
ANSWERS - CURRENT VERSION (2026/2027)
1. What is the photovoltaic effect?
• A) The heating of a surface by sunlight
• B) The conversion of light energy directly into electrical energy
• C) The reflection of sunlight from solar panels
• D) The storage of solar energy in batteries
ANSWER : B
2. Who discovered the photovoltaic effect?
• A) Albert Einstein
• B) Edmond Becquerel
• C) Thomas Edison
• D) Nikola Tesla
ANSWER : B
3. What is the approximate power of solar radiation reaching Earth's
surface on a clear day?
• A) 100 W/m²
• B) 500 W/m²
• C) 1000 W/m²
• D) 2000 W/m²
ANSWER : C
,4. What does "AM1.5" refer to in solar terminology?
• A) A type of solar panel
• B) Air Mass 1.5 - standard solar spectrum
• C) Afternoon measurement at 1:50 PM
• D) A solar inverter model
ANSWER : B
5. What percentage of the sun's energy reaches Earth's surface?
• A) 10%
• B) 30%
• C) 50%
• D) 70%
ANSWER : B
6. What is insolation?
• A) The insulation material used in solar panels
• B) The amount of solar radiation reaching a surface
• C) The isolation of solar cells
• D) A type of solar inverter
ANSWER : B
7. What is the solar constant?
• A) 1000 W/m²
• B) 1200 W/m²
• C) 1367 W/m²
• D) 1500 W/m²
,ANSWER : C
8. Which wavelength range contains most of the sun's energy?
• A) Ultraviolet
• B) Visible light
• C) Infrared
• D) X-rays
ANSWER : B
9. What is the approximate surface temperature of the sun?
• A) 3,500°C
• B) 5,500°C
• C) 7,500°C
• D) 10,000°C
ANSWER : B
10. What does STC stand for in solar PV terminology?
• A) Solar Testing Conditions
• B) Standard Test Conditions
• C) System Temperature Control
• D) Solar Thermal Capacity
ANSWER : B
11. Under STC, what is the standard solar irradiance level?
• A) 800 W/m²
• B) 900 W/m²
• C) 1000 W/m²
, • D) 1100 W/m²
ANSWER : C
12. What is the standard cell temperature under STC?
• A) 20°C
• B) 25°C
• C) 30°C
• D) 35°C
ANSWER : B
13. What is the air mass (AM) value at the equator at solar noon?
• A) AM0
• B) AM1.0
• C) AM1.5
• D) AM2.0
ANSWER : B
14. What does PV stand for?
• A) Power Voltage
• B) Photovoltaic
• C) Panel Voltage
• D) Positive Volt
ANSWER : B
15. Which part of the electromagnetic spectrum can solar cells convert to
electricity?
• A) Only visible light
• B) Only ultraviolet
