VIRGINIA ALTERNATIVE ENERGY
SYSTEM CONTRACTING EXAM
TEST PAPER QUESTIONS
SOLUTIONS GRADED A+
◉ 547. According to Ugly's Electrical References, which symbol
represents capacitance in circuit diagrams?
A) R
B) L
C) C
D) V. Answer: Correct Answer: C
Explanation: In circuit diagrams, capacitance is represented by the
symbol "C," which stands for capacitors.
◉ 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. Answer: Correct Answer: A
,Explanation: Electrical panels must be accessible and free from
obstructions to allow quick shutoff in emergencies, as per OSHA
requirements.
◉ 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. Answer: Correct Answer: B
Explanation: Conductor insulation is selected based on the voltage
rating and the environmental conditions to ensure safe and durable
performance.
◉ 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. Answer: Correct Answer: B
,Explanation: The mounting system secures the panels in the proper
orientation and angle to maximize sun exposure and system
efficiency.
◉ 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. Answer: 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.
◉ 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. Answer: Correct Answer: C
Explanation: Cable assemblies in wet locations must carry a wet-
location rating to ensure that they can safely operate in moisture-
laden environments.
◉ 553. In a photovoltaic system, which parameter is measured in
kilowatt-hours (kWh)?
A) Instantaneous power
B) Energy production
C) Current
D) Voltage. Answer: Correct Answer: B
Explanation: Energy production over time is measured in kilowatt-
hours, indicating the total energy generated by the PV system.
◉ 554. According to Ugly's Electrical References, which instrument
is used to measure the resistance in a circuit?
A) Ammeter
B) Voltmeter
C) Ohmmeter
SYSTEM CONTRACTING EXAM
TEST PAPER QUESTIONS
SOLUTIONS GRADED A+
◉ 547. According to Ugly's Electrical References, which symbol
represents capacitance in circuit diagrams?
A) R
B) L
C) C
D) V. Answer: Correct Answer: C
Explanation: In circuit diagrams, capacitance is represented by the
symbol "C," which stands for capacitors.
◉ 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. Answer: Correct Answer: A
,Explanation: Electrical panels must be accessible and free from
obstructions to allow quick shutoff in emergencies, as per OSHA
requirements.
◉ 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. Answer: Correct Answer: B
Explanation: Conductor insulation is selected based on the voltage
rating and the environmental conditions to ensure safe and durable
performance.
◉ 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. Answer: Correct Answer: B
,Explanation: The mounting system secures the panels in the proper
orientation and angle to maximize sun exposure and system
efficiency.
◉ 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. Answer: 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.
◉ 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. Answer: Correct Answer: C
Explanation: Cable assemblies in wet locations must carry a wet-
location rating to ensure that they can safely operate in moisture-
laden environments.
◉ 553. In a photovoltaic system, which parameter is measured in
kilowatt-hours (kWh)?
A) Instantaneous power
B) Energy production
C) Current
D) Voltage. Answer: Correct Answer: B
Explanation: Energy production over time is measured in kilowatt-
hours, indicating the total energy generated by the PV system.
◉ 554. According to Ugly's Electrical References, which instrument
is used to measure the resistance in a circuit?
A) Ammeter
B) Voltmeter
C) Ohmmeter
