PVIP試験無料問題集（162題）「NABCEP PV Installation Professional (PVIP) Board Certification 認定」

出題：1

A PV array is tested with an IV curve tracer. The fill factor is 0.70, lower than the expected 0.80. What does this indicate?

A. Shunt resistance decrease

B. Series resistance increase

C. Open-circuit voltage drop

D. Short-circuit current rise

正解：B 解答を投票する

出題：2

Which of the following is an NEC-indicate means to identify PV source and output circuits at accessible points of termination connection, and splices?

A. Insulation type

B. Conduct stickers

C. Placards

D. Tagging

正解：D 解答を投票する

出題：3

A AWG THWN-2 PV output conductors from two PV arrays are run in the same 3 in, conduit to their respective functionally grounded inverters in the building. The three PV source circuits are each protected by a 15A fuse in the combiner box at the array. The conduit, which is strapped directly to the roof, is exposed to design temperatures of 140' F (60' C) during its 30 ft.
Exposed run. What is the MAXIMUM current carrying capability value of the PV output conductors?

A. 42A

B. 61A

C. 54A

D. 34A

正解：D 解答を投票する

出題：4

A site has an average wind speed of 25 mph and is classified as Exposure Category C per ASCE 7. What is the minimum wind design speed for the PV array structure?

A. 130 mph

B. 90 mph

C. 150 mph

D. 110 mph

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：5

A PV array is installed with a rapid shutdown system per NEC 690.12. The array is 15 feet from the service entrance. What is the maximum voltage allowed within the array boundary 30 seconds after shutdown initiation?

A. 80V

B. 30V

C. 120V

D. 240V

正解：B 解答を投票する

出題：6

Which of the following is an NEC requirement regarding access for large-scale PV electric power production facilities?

A. Field-applied hazard markings must be installed, and access to the supply station is to be restricted by fencing or other adequate means.

B. Access to remote isolating equipment for servicing is allowed for individual other than qualified persons when the equipment is enclosed within a secure structure.

C. Arc flash warning labels must be field-applied by the installer at all access points for qualified persons and at the point of the utility interconnection directory.

D. All fencing and associated gates must have ac and dc current and voltage exposure labvels and must be electrically isolated from the solar facility.

正解：A 解答を投票する

出題：7

A PV system equipped with rapid shutdown requires a label stating ''RAPID SHUTDOWN SWITCH FOR SOLAR PV SYSTEM''.
Which is the BEST description of where this label is required?

A. On or within 3 ft. of the ac disconnect

B. On or within 3 ft. of the ac disconnect

C. On or within 3 ft. of the ac disconnect

D. On or within 3 ft. of the ac disconnect

正解：B 解答を投票する

出題：8

During a PV system inspection, an installer notices that the rapid shutdown system fails to de-energize the array within 30 seconds of initiation. What is the most likely cause based on NEC 690.12 requirements?

A. The array conductors exceed the maximum allowable voltage

B. The system lacks a compatible rapid shutdown device

C. The inverter is not listed for rapid shutdown compliance

D. The rapid shutdown switch is installed more than 10 feet from the array

正解：B 解答を投票する

出題：9

A 20 kW system has a measured output of 18 kW at STC. What is the total system loss?

A. 20%

B. 15%

C. 10%

D. 5%

正解：C 解答を投票する

出題：10

Which of the following voltages should be included on the dc disconnected label to indicate MAXIMUM system voltage?

A. Temperature-corrected V

B. Non-temperature-corrected V

C. Source circuit V

D. 600 V

正解：A 解答を投票する

出題：11

A PV system produces 12,000 kWh annually at a site with 1500 kWh/m²/year insolation. The array area is 50 m². What is the system efficiency?

A. 12%

B. 16%

C. 18%

D. 14%

正解：B 解答を投票する

出題：12

On a PV system larger than 100kw, which PV array design will provide the HIGHEST degree of performance monitoring.
Granularity, and ease of troubleshooting performance issues?

A. Central inverter with data acquisition system located at the inverter.

B. Multiple-string inverter system with data acquisition system located at each dc combiner

C. Multiple-string inverter system with data acquisition system located at each inverter.

D. Multiple-string inverter system with monitored dc-to-dc converters located at each module

正解：B 解答を投票する

出題：13

An 8KWsc roof-mounted array is placed on a school building. The inverter is located within 1 ft, of the array boundary and has an integrated ac-and dc-disconnecting switch. The system is to be connected to a 400A load center, protected by a 400A main breaker. Which of the following MUST be included to meet NEC requirements?

A. A readily accessible ac-disconnecting switch, who location is identified on the system directory

B. A readily accessible dc disconnect with rapid shutdown initiation device permanently labeled

C. An ac-disconnect label with the location of the rooftop dc-disconnect switch.

D. A rapid shutdown initiation device operating contractor within 1 ft, of the array to de-energize the dc subarrays

正解：A 解答を投票する

PVIP試験無料問題集「NABCEP PV Installation Professional (PVIP) Board Certification 認定」