单项选择题
A.deteriorates B.increases C.are fouled D.becomes better
On commonly used ships,if two A√Cgenerators are operate...
单项选择题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
Moisture in a D-Cmotor would cause （）.A.short circuitB....
单项选择题Moisture in a D-Cmotor would cause （）.
A.short circuit B.speed up C.slow down D.hunting
Prior to any overhaul work on electric equipment, it is...
单项选择题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
