VA ALTERNATIVE ENERGY SYSTEM CONTRACTING EXAM QUESTIONS AND CORRECT ANSWERS LATEST UPDATE 2026/2027 .

VA ALTERNATIVE ENERGY
SYSTEM CONTRACTING EXAM
QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE
2026/2027 .

,1. 546. In photovoltaic system design, which calculation is essential to deter-mine the number of panels
needed?


A) Total wattage divided by the system voltage

B) Total area divided by panel dimensions

C) Daily energy consumption divided by panel output

D) Inverter capacity divided by battery voltage: Correct Answer: C


Explanation: Calculating the number of panels required involves dividing the daily energy consumption by the expected output per panel under typical conditions.

2. 547. According to Ugly's Electrical References, which symbol represents capacitance in circuit diagrams?
A) R

B) L

C) C

D) V: Correct Answer: C


Explanation: In circuit diagrams, capacitance is represented by the symbol "C," which stands for capacitors.

3. 548. OSHA requires that electrical panels on construction sites must be located in areas that are:


A) Easily accessible and free from obstructions

B) Hidden from view for security reasons
C) Painted in bright colors

D) Enclosed in locked cabinets: Correct Answer: A


Explanation: Electrical panels must be accessible and free from obstructions to allow quick shutott in emergencies, as per OSHA requirements.

4. 549. NFPA-70 specifies that the conductor insulation for a given application must be selected based on which
criteria?


A) Cost alone

B) Voltage rating and environmental conditions

,C) Aesthetics of the installation

D) The brand of cable used: Correct Answer: B


Explanation: Conductor insulation is selected based on the voltage rating and the environmental conditions to ensure safe and durable performance.

5. 550. In photovoltaic installations, what is the primary role of the mounting system?


A) To increase the power output

B) To secure the panels in the correct orientation

C) To reduce system cost

D) To convert DC to AC: Correct Answer: B


Explanation: The mounting system secures the panels in the proper orientation and angle to maximize sun exposure and system eflciency.

6. 551. Which OSHA regulation requires that all fall protection systems be inspected before each use?


A) 1926.451

B) 1926.502

C) 1926.501

D) 1926.503: Correct Answer: D


Explanation: OSHA regulation 1926.503 mandates that fall protection systems be inspected prior to each use to ensure all components are functional and safe.

7. 552. NFPA-70 requires that cable assemblies used in wet locations must be rated for which of the following?


A) Damp environments only

B) Direct burial only

C) Wet locations

D) Indoor use only: ✔✔ ANSW C

, Explanation: Cable assemblies in wet locations must carry a wet-location rating to ensure that they can safely operate in moisture-laden environments.

8. 553. In a photovoltaic system, which parameter is measured in kilo-watt-hours (kWh)?


A) Instantaneous power

B) Energy production

C) Current

D) Voltage: ✔✔ ANSW B


Explanation: Energy production over time is measured in kilowatt-hours, indicating the total energy generated by the PV system.

9. 554. According to Ugly's Electrical References, which instrument is used to measure the resistance in a
circuit?


A) Ammeter

B) Voltmeter

C) Ohmmeter

D) Wattmeter: ✔✔ ANSW C


Explanation: An ohmmeter is used to measure resistance, an essential parameter for troubleshooting and circuit analysis.

10. 555. OSHA standards specify that temporary wiring on construction sites must be:


A) Left exposed for quick access

B) Installed and maintained in a neat and workmanlike manner

C) Hidden behind walls

D) Insulated with plastic only: ✔✔ ANSW B


Explanation: OSHA requires that temporary wiring be installed and maintained in a neat, orderly, and workmanlike manner to reduce hazards.