單項選擇題

On commonly used ships,if two A√Cgenerators are operated in parallel, the load is distributed evenly by （）.

A.varying the D-Cexciter voltage
B.varying the reluctance of the air gap
C.regulating the speed of prime mover
D.shorting out part of the armature windings

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單項選擇題

Moisture in a D-Cmotor would cause （）.

A.short circuit
B.speed up
C.slow down
D.hunting

單項選擇題

Prior to any overhaul work on electric equipment, it is important to ensure the circuits are （）.

A.live
B.dead
C.excited
D.on line

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On commonly used ships,if two A√Cgenerators are operated in parallel, the load is distributed evenly by （）.

你可能感興趣的試題

Moisture in a D-Cmotor would cause （）.

Prior to any overhaul work on electric equipment, it is important to ensure the circuits are （）.