A.Peak value
B.Root-mean-square value
C.Average value
D.Maximum value
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A.time-delay protection
B.short-circuit protection
C.short duration surge protection
D.sustained overload protection
A.a magnetic operating coil
B.normally open line contacts
C.thermal-overload protection
D.a momentary-contact start button
A.60
B.120
C.180
D.360
A.copper and antimony
B.steel and babbitt
C.aluminum or beryllium alloy
D.zinc or an alloy of tin and lead
A.prevent grounds in branch circuits
B.prevent opens in motor circuits
C.permit momentary overloads without melting
D.guard lighting and electronic circuits
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