NETA 3 questions 1 with 100% Correct Answers

NETA 3 questions 1 with 100% Correct Answers Insulator thickness for high voltage power lines should be based on ______ voltage - Answer- Peak Maximum acceptable ASTM D974 on new transformer oil is ______ - Answer- .015 Minimum IR for 480 gen with random wound stator coils manuf in 1995 - Answer- 5 megohms Bimetallic strips in thermal relays have two metal strips with a different - Answer- Coefficient of expansion AC dielectric withstand Maintenance of 5 kV dry transformer should not exceed _____% of factory voltage for one minute - Answer- 65 Lead acid storage batteries do Not include which hazard? - Answer- High voltage arcing High resistance connections in DC armatures are best identified by - Answer- Trending Air terminals for lightning protection that exceed 24" shall be supported at not less than _____ their height - Answer- 1/2 Most low voltage circuit breaker manufacturers recommend that contacts touch within _____" of each other - Answer- 1/8 Circular mil area = - Answer- D squared What would cause low specific gravity in a battery - Answer- Low charge voltage D1816 1mm gap - Answer- 34kV Locked rotor kva - Answer- HP x max code value Locked rotor current - Answer- Locked rotor kVA/(1.732 x kV) A moving iron meter operates by applying ____ current to the coil - Answer- AC Arcing fault relative to bolted fault is _____% - Answer- 80 a . b= - Answer- |a| x |b| x cosine theta Which test is an acceptable alternative to PF on transformer bushings? - Answer- NBDFR The easiest method for determining contact sequence on a low voltage cb is - Answer- Light circuit Trip current supervision is a metering parameter of an IED True or False - Answer- False IEC61850 has roots in RTU while DNP3 has roots in LAN/WAN true or false - Answ