NCCER SOLAR PHOTOVOLTAIC SYSTEMS
Examination Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
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1. What is photovoltaic (PV) energy?
A. Heat energy
B. Conversion of sunlight into electricity
C. Mechanical energy
D. Chemical energy
Answer: B. Conversion of sunlight into electricity
Rationale: PV systems convert solar radiation into electrical energy.
2. What material is commonly used in solar cells?
A. Copper
B. Silicon
C. Aluminum
D. Steel
Answer: B. Silicon
Rationale: Silicon is the most widely used semiconductor in PV cells.
3. Case Scenario – A panel is fully shaded. Output?
A. Maximum output
B. Reduced or zero output
C. Increased output
D. No change
,Answer: B. Reduced or zero output
Rationale: Shading significantly reduces PV performance.
4. What is DC electricity?
A. Alternating current
B. Direct current
C. Mechanical power
D. Heat flow
Answer: B. Direct current
Rationale: PV panels produce DC electricity.
5. What is AC electricity?
A. Direct flow
B. Alternating current
C. Static energy
D. Solar radiation
Answer: B. Alternating current
Rationale: Used in homes and grid systems.
🔷 ELECTRICAL BASICS
6. What is voltage?
A. Flow of electrons
B. Electrical pressure
C. Resistance
D. Power
Answer: B. Electrical pressure
Rationale: Voltage drives current through a circuit.
7. What is current measured in?
A. Volts
B. Amps
C. Ohms
D. Watts
, Answer: B. Amps
Rationale: Current is measured in amperes.
8. What is resistance?
A. Flow of current
B. Opposition to current flow
C. Electrical pressure
D. Power output
Answer: B. Opposition to current flow
Rationale: Resistance limits current.
9. Case Scenario – Resistance increases in circuit. Effect on current?
A. Increases
B. Decreases
C. No change
D. Stops instantly
Answer: B. Decreases
Rationale: Ohm’s law relationship.
10. What is power measured in?
A. Volts
B. Amps
C. Watts
D. Ohms
Answer: C. Watts
Rationale: Power = Voltage × Current.
🔷 PV SYSTEM COMPONENTS
11. What is a solar module?
A. Single cell
B. Group of PV cells connected together
C. Battery
D. Inverter
Examination Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. What is photovoltaic (PV) energy?
A. Heat energy
B. Conversion of sunlight into electricity
C. Mechanical energy
D. Chemical energy
Answer: B. Conversion of sunlight into electricity
Rationale: PV systems convert solar radiation into electrical energy.
2. What material is commonly used in solar cells?
A. Copper
B. Silicon
C. Aluminum
D. Steel
Answer: B. Silicon
Rationale: Silicon is the most widely used semiconductor in PV cells.
3. Case Scenario – A panel is fully shaded. Output?
A. Maximum output
B. Reduced or zero output
C. Increased output
D. No change
,Answer: B. Reduced or zero output
Rationale: Shading significantly reduces PV performance.
4. What is DC electricity?
A. Alternating current
B. Direct current
C. Mechanical power
D. Heat flow
Answer: B. Direct current
Rationale: PV panels produce DC electricity.
5. What is AC electricity?
A. Direct flow
B. Alternating current
C. Static energy
D. Solar radiation
Answer: B. Alternating current
Rationale: Used in homes and grid systems.
🔷 ELECTRICAL BASICS
6. What is voltage?
A. Flow of electrons
B. Electrical pressure
C. Resistance
D. Power
Answer: B. Electrical pressure
Rationale: Voltage drives current through a circuit.
7. What is current measured in?
A. Volts
B. Amps
C. Ohms
D. Watts
, Answer: B. Amps
Rationale: Current is measured in amperes.
8. What is resistance?
A. Flow of current
B. Opposition to current flow
C. Electrical pressure
D. Power output
Answer: B. Opposition to current flow
Rationale: Resistance limits current.
9. Case Scenario – Resistance increases in circuit. Effect on current?
A. Increases
B. Decreases
C. No change
D. Stops instantly
Answer: B. Decreases
Rationale: Ohm’s law relationship.
10. What is power measured in?
A. Volts
B. Amps
C. Watts
D. Ohms
Answer: C. Watts
Rationale: Power = Voltage × Current.
🔷 PV SYSTEM COMPONENTS
11. What is a solar module?
A. Single cell
B. Group of PV cells connected together
C. Battery
D. Inverter
