The most common source of excitation for synchronous motors is a/an ().
- Alow voltage battery
- Bmotor attenuator set
- CDC exciter generator
- DAC supply
The most common source of excitation for synchronous motors is a/an ().
1、The type of gauge most commonly used t
The type of gauge most commonly used to measure pressure is the ().Abimetallic typeBdiaphragm typeCbourdon tube typeDresistance-temperature type
2、The most common forms of main drive us
The most common forms of main drive used on deck auxiliaries are ().Asteam plants, electric motors and compressed airBdiesel engine, hydraulic...
3、The most common type of davit found on
The most common type of davit found on merchant vessels today is the().AradialBsheath-screwCgravityDquadrantal
4、The fog most commonly encountered at s
The fog most commonly encountered at sea is called().Aconduction fogBradiation fogCfrontal fogDadvection fog
5、The star formation is most commonly us
The star formation is most commonly used and requires() on the alternator.Aone slip-ringBtwo slipringsCthree slipringsDfour slipring
6、The most common type of AC service gen
The most common type of AC service generator found aboard ship is the stationary ().Aelectromagnetic field, revolving armature typeBelectromagnet...