Online Access Free NETA_2 Practice Test

What is the turns ratio of a three-phase 500 kVA, 13,200-480 V delta-delta transformer operating at 80% load?

• A.27.5
• B.22.0
• C.24.5
• D.30.0

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

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

A1500:5 multi-ratio CTproduces400 Vat the1200:5 tapduring saturation testing. What voltage is expected at the1500:5 tap?

• A.480 V
• B.320 V
• C.500 V
• D.400 V

Identify the substation bus arrangement that usestwo circuit breakers per circuit, allowing either breaker to be removed from service without interrupting load.

• A.Ring bus
• B.Double bus, single breaker
• C.Main and transfer bus
• D.Double breaker bus

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

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