单选题 (单选题)A ground can be defined as an electrical connection between the wiring of a motor and its ___.

单选题 (单选题)Electric wires should have each feature of the following except __.

单选题 (单选题)__ increases the voltage (step-up) or reduces the voltage (step-down).

单选题 (单选题)A resistance in a circuit of unknown value is to be tested using the voltmeter/ammeter method. Therefore, the meters should be connected with ___.

单选题 (单选题)__ is a machine by which electrical energy is transformed into mechanical energy.

单选题 (单选题)__ changes AC into DC.

单选题 (单选题)An accidental path of low resistance, allowing passage of abnormal amount of current is known as a/an ___.

单选题 (单选题)The __, cage rotor induction motor is the first choice marine motor in most modern ships because of its electrical and mechanical simplicity.