2026 ANSWERS GUARANTEED PASS
⫸ 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