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
您可能感興趣的試卷
你可能感興趣的試題
A.brushes on a commutator
B.brushes on slip rings
C.slip rings on a commutator
D.direct connections from the stator
A.heat-resisting acrylic
B.heat-resisting aluminum
C.insulating varnish
D.insulating white lead
A.hydrogen chloride
B.calcium chloride
C.sulfuric acid
D.muriatic acid
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.limit
B.monitor
C.modulator
D.interlock
最新試題
If separating effect is not good, which measure should be taken ()
Cold weather starting of a diesel engine may be made easier by()
()are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
If two A.C.generators are to be operated in parallel, the load is distributed evenly by()
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the()
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?()
() is not installed on the main switchboar.
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to ()