A transformer in an electric circuit serves to ()
- Agenerate its own electrical power
- Btransform electrical energy into mechanical energy
- Cincrease or decrease circuit voltage as required
- Dconvert AC current to DC current
A transformer in an electric circuit serves to ()
1、An electrical device which employs a s
An electrical device which employs a stationary armature and a rotating electromagnetic field is used aboard ship as a ().Amagnetic amplifierBship’s service alternatorCthree-wire DC generatorDsaturable core reactor
2、In a series circuit, which value will
In a series circuit, which value will remain unchanged at all places in the circuit?()AVoltageBCurrentCResistanceDInductance
3、A circuit that has one wire in contact
A circuit that has one wire in contact with the hull of the ship is a()Aseries circuitBgrounded circuitCshort circuitDclosed circuit
4、In a simple series circuit, the entire
In a simple series circuit, the entire source voltage will drop across ()Athe resistor next to the negative terminalBa short circuitCthe resistor next to the positive terminalDan open circuit
5、A fire in an electrical generator is c
A fire in an electrical generator is considered to be ().AClass "A"BClass "B"CClass "C"DClass "D"
6、A heater in the circuit facilitates wa
A heater in the circuit facilitates warning of the engine prior to () by circulating hot water.AstartingBstoppingCto startDto sto