21-09. ELECTRICS
All questions: 238
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Questions for exams: 25
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1. As regards the Generator Control Unit (GCU) of an AC generator, it can be said that: 1) The GCU controls the AC generator frequency. 2) Modern GCUs are provided with a permanent indication to record the failure. 3) All the commands originating from the control panel are applied via the GCU, except dog clutch release. 4) The Auxiliary Power Unit (APU) provides the excitation of the AC generator as soon as the APU starts up. The combination regrouping all the correct statements is:
2. (Refer to figure 021-13) In the following diagram A, B and C are respectively the:
3. What is a transistorized static inverter in a DC circuit used for?
4. R1 and R2 resistances are connected in parallel. The value of the equivalent resistance (Req) so obtained is given by the following formula:
5. When a battery is nearly discharged, the:
