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Questions and Answers
What type of electrical power system can be found in aircraft?
Which manuals are referenced when performing maintenance on aircraft electrical systems?
Which ATA chapters are relevant to aircraft electrical power systems maintenance?
What type of system do aircraft batteries almost without exception use?
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What purpose does the standby AC and/or DC system in aircraft serve?
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How is the negative terminal of the battery connected in an aircraft electrical system?
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What is the purpose of the sump jar with a neutralising agent in System A?
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What distinguishes System B from System A and System C in the context of battery ventilation systems?
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What type of batteries are commonly found in light aircraft based on the provided information?
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In a pressurised aircraft using a sealed-case battery, how is the ventilation system typically connected to the battery?
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Which component prevents external connections from protruding through larger fully enclosed batteries?
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Why is it advised to smear lugs with an approved lubricant before connecting light aircraft batteries?
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What is the purpose of the reverse current cut-out in a three-unit regulator for generator systems?
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What is the consequence of 'motoring' the generator when the battery is not disconnected?
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What causes an intermittent short circuit in a three-unit regulator's voltage regulator unit?
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How does the current regulator unit in a three-unit regulator function?
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What is the role of vibrating contact C1 in a three-unit regulator's voltage regulator unit?
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Why is it important to disconnect the battery from the generator when it is not operating?
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What function does the 400 Hz oscillator have in a static inverter?
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Which component of the static inverter block diagram is responsible for producing a 400 Hz square wave at the correct voltage and frequency?
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What is the main purpose of the final filter in a static inverter?
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Why should static inverters be sent to approved facilities for repair?
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What role do transformers play in changing AC voltage and current values?
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In what way has miniaturization impacted static inverters?
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What is the purpose of ensuring no external power source with reverse polarity or reverse phase sequence supplies power to the aircraft's electric power system?
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Why does the DC external power receptacle have a smaller pin used for interlock sensing and polarity check?
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What is the purpose of the shorter length of the smaller pin in the DC external power receptacle?
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Why are different-sized prongs used in the external power plug to connect to the aircraft?
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What happens if the external power relay de-energizes before the main pins are disengaged from the socket?
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How does the DC external power receptacle ensure that arcing at the pins is prevented?
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