A circuit breaker and a fuse have a basic similarity in that they both ().
A、A.can be reset to energize the circuit
B、B.should open the circuit when overloaded
C、C.will burn out when an over current flow develops
D、D.All of the above
A、A.can be reset to energize the circuit
B、B.should open the circuit when overloaded
C、C.will burn out when an over current flow develops
D、D.All of the above
A、prevent main circuit overload B、protect the circuit breaker blowout coil C、prevent alternator motorization D、prevent low voltage tripout
A、can be reset to energize the circuit B、should open the circuit when overloaded C、will burn out when an over current flow develops D、All of the above
A、melts and must be replaced B、is enclosed in a tube of insulating material with metal ferrules at each end C、gives no visual indication of having opened the circuit D、trips to break the circuit and may be reset
A、melts and must be replaced B、is enclosed in a tube of insulating material with metal ferrules at each end C、gives no visual indication of having opened the circuit D、trips to break the circuit and may be reset
A、cannot be detected tinder normal conditions B、is of no consequence to engineering personnel C、is indicated at the branch circuit breaker panel D、is indicated by the ground detecting lamps on the main switchboard