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Questions and Answers
What is the function of the thermal circuit breaker in normal operation?
What is the function of the thermal circuit breaker in normal operation?
- Disengage the latching mechanism
- Radiate heat to the load (correct)
- Operate the bimetallic strip
- Prevent current flow to the load
What triggers the thermal circuit breaker to 'trip' in case of current exceeding its rating?
What triggers the thermal circuit breaker to 'trip' in case of current exceeding its rating?
- Latch mechanism releases
- Bimetallic strip disengages
- Temperature of the thermal element increases (correct)
- Contact switch unit activates
What is a disadvantage of a rotary inverter compared to a static inverter?
What is a disadvantage of a rotary inverter compared to a static inverter?
- Higher surge capability
- Lack of frequency control (correct)
- Higher efficiency
- Less scheduled maintenance
Which part of the thermal circuit breaker directly opens the main switch contacts when tripped?
Which part of the thermal circuit breaker directly opens the main switch contacts when tripped?
What must be done to reset a tripped thermal circuit breaker?
What must be done to reset a tripped thermal circuit breaker?
Which component of a rotary inverter typically leads to more scheduled maintenance than static inverters?
Which component of a rotary inverter typically leads to more scheduled maintenance than static inverters?
What is responsible for releasing the latch mechanism of the thermal circuit breaker when tripped?
What is responsible for releasing the latch mechanism of the thermal circuit breaker when tripped?
What voltage range does the static inverter mentioned in the text use as input?
What voltage range does the static inverter mentioned in the text use as input?
What happens when the load is removed from a rotary inverter?
What happens when the load is removed from a rotary inverter?
Why is it important for circuit breakers to clearly display their current rating?
Why is it important for circuit breakers to clearly display their current rating?
What type of generators are used as the principal source of electric power in almost all transport-category aircraft?
What type of generators are used as the principal source of electric power in almost all transport-category aircraft?
Why should the control box on top of a rotary inverter not be disassembled in the field?
Why should the control box on top of a rotary inverter not be disassembled in the field?
What is a characteristic of the output of the static inverter mentioned in the text?
What is a characteristic of the output of the static inverter mentioned in the text?
Why are AC generators preferred over DC generators in transport-category aircraft?
Why are AC generators preferred over DC generators in transport-category aircraft?
What is the purpose of Transformer Rectifier Units (TRUs) on larger aircraft?
What is the purpose of Transformer Rectifier Units (TRUs) on larger aircraft?
Why are DC alternators used in modern light aircraft?
Why are DC alternators used in modern light aircraft?
Which part of the aircraft serves as the backup DC source if other sources do not operate?
Which part of the aircraft serves as the backup DC source if other sources do not operate?
What type of drive is an AC generator on light aircraft NOT suitable for due to weight constraints?
What type of drive is an AC generator on light aircraft NOT suitable for due to weight constraints?
What is the purpose of the reverse current cut-out relay in the generator circuit?
What is the purpose of the reverse current cut-out relay in the generator circuit?
What happens if the reverse current cut-out relay is not used in the generator circuit?
What happens if the reverse current cut-out relay is not used in the generator circuit?
How does reducing the output voltage affect the generator current?
How does reducing the output voltage affect the generator current?
What initiates the rise in generator voltage and current in the described system?
What initiates the rise in generator voltage and current in the described system?
What is the role of the voltage regulator in the system?
What is the role of the voltage regulator in the system?
Why is a certain minimum value of load current necessary in this system?
Why is a certain minimum value of load current necessary in this system?
What happens when the output voltage rises above a specified critical value in a vibrating-type voltage regulator?
What happens when the output voltage rises above a specified critical value in a vibrating-type voltage regulator?
How does a vibrating-type voltage regulator maintain an average voltage with load changes?
How does a vibrating-type voltage regulator maintain an average voltage with load changes?
What is the role of the solenoid in a vibrating-type voltage regulator?
What is the role of the solenoid in a vibrating-type voltage regulator?
Why does contact B open when the output voltage exceeds a critical value?
Why does contact B open when the output voltage exceeds a critical value?
What purpose does the dashpot serve in a vibrating-type voltage regulator?
What purpose does the dashpot serve in a vibrating-type voltage regulator?
How does capacitor C contribute to the functioning of a vibrating-type voltage regulator?
How does capacitor C contribute to the functioning of a vibrating-type voltage regulator?
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