NETA 3 EXAM COMPREHENSIVE STUDY GUIDE
◉ 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
◉ 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
