NETA_2 試験問題を無料オンラインアクセス

On an electrical schematic, adot on a current transformer symbolindicates:

• A.Grounded side
• B.Burden rating
• C.Metering accuracy class
• D.Polarity

What is theminimum oxygen concentrationallowed before entering a transformer or similar enclosed electrical space?

• A.19.5%
• B.10.0%
• C.16.0%
• D.11.5%

Medium-voltage cable, as defined by NEC Article 328, is rated atwhat minimum voltage?

• A.5000 V
• B.600 V
• C.1001 V
• D.1000 V

Transformer oil samples drawn when the oil temperature isbelow 32°F (0°C)may:

• A.Be invalid for testing
• B.Not reveal free water
• C.Always indicate excessive moisture
• D.Show artificially high dielectric strength

According to NETA standards, what is themaximum allowable timetest instruments may remain in service before requiring recalibration?

• A.24 months
• B.6 months
• C.12 months
• D.9 months