單項(xiàng)選擇題

To protect the rotor of a motor disassembled for maintenance or overhaul, it should be（）

A.suspended by wire slings in one comer of the shop
B.wrapped in several layers of heavy paper or carboard
C.supported by flat wood blocks on the workbench
D.returned to the frame as soon as the bearings are removed

你可能感興趣的試題

單項(xiàng)選擇題

When paralleled, AC generators must have the same （）

A.frequency
B.number of phases
C.phase rotation
D.All of the above

單項(xiàng)選擇題

A DC generator is used to supply direct current in order to maintain an AC generator field and is known as a/an （）

A.rotor
B.stator
C.exciter
D.armature

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To protect the rotor of a motor disassembled for maintenance or overhaul, it should be（）

你可能感興趣的試題

When paralleled, AC generators must have the same （）

A DC generator is used to supply direct current in order to maintain an AC generator field and is known as a/an （）