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TEST BORRADO, QUIZÁS LE INTERESE: avionica

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Título del Test: avionica Descripción: PDUS sens Autor: rino OTROS TESTS DEL AUTOR Fecha de Creación: 15/10/2024 Categoría: Otros Número Preguntas: 19

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Temario:

"What is the primary difference between the 2-Inch Spring-lift PDU and the 43212 Self-lift PDU?" The material used for construction. The color of the housing. The mechanism for lifting cargo. The size of the electrical cable. . Which components of the 2-Inch Spring-lift PDU are shared with the 43212 Self-lift PDU? "Spring-loaded plungers and retractable mounting pins." Aluminum drive rollers and electrical module Anodized aluminum housing and electrical cable. "Gear train components and traction rollers." . What is the purpose of the elastomeric-coated, aluminum drive rollers in the 2-Inch Spring-lift PDU? To lift the PDU. "To engage with Unit Load Devices (ULDs) and move them within the cargo bay." To retract mounting pins. To control the functions of the PDU. . "What type of electric motor powers the 2-Inch Spring-lift PDU?" "115/200 VAC, single-phase, 60 Hz." 220 VAC, three-phase, 50 Hz. 115/200 VAC, three-phase, 400 Hz. 240 VDC, single-phase. . Which component controls the functions of the 2-Inch Spring-lift PDU? Anodized aluminum housing. Electrical module Spring-loaded plungers. Retractable mounting pins. . "What connects the 2-Inch Spring-lift PDU to the power and control systems?" Electrical module. Gear train. Electrical cable and plug. Anodized aluminum housing. . How does the spring-lift mechanism of the PDU function? By direct engagement with the cargo bay floor. By applying constant pressure on the cargo containers. "By reacting with roller trays and utilizing a spring pack and actuator." By employing an electromagnetic field. . What is the benefit of the spring-lift PDU's constant contact with the container bottom? Decreased system performance and efficiency. Increased drift of containers. Improved system performance and efficiency, along with inherent braking capacity. Enhanced container movement control during power loss. . What does the power-off brake design of the PDU allow it to do? Allows the PDU to move freely without any control. Prevents the PDU from stopping containers. "Retains total control of a container above it under normal operation." "Increases the likelihood of runaway conditions during power loss." . What is the purpose of the power-off brake design in the spring-lift PDU? To increase the movement of free- rolling containers. To avoid potential runaway conditions during power loss. To reduce the efficiency of the PDU. To decrease the braking capacity of the PDU. . How does the spring-lift PDU differ from most self-lift PDU systems? By lacking inherent braking capacity. By allowing containers to drift. "By having rollers always in contact with the container bottom." By using a single-stage gear train. . "What data is sent from the PDU to the control system through the CAN Bus?" Drive commands. Maintenance history. Operational control data. All of the above. . How does the microprocessor enhance the inherent protection from crossed phase switching? By increasing the voltage. By implementing a redundant minimum reversal delay. By shutting down the PDU. By increasing the communication speed. . How does the microprocessor handle ULD detection? "By shutting down the PDU after 0.15 seconds." "By adjusting for ambient lighting automatically." "By sending error messages to the control system." "By increasing the communication speed." . "What action does the microprocessor take if communication with the control system is lost?" It shuts down the PDU. It increases the reversal delay. "It implements multiple error correction schemes." "It automatically retransmits lost or garbled data packets." . "What is the purpose of the screw thread at the top of the temperature sensor?" To measure temperature. "To connect to the aircraft circuits." "To permit installation in the related system duct." To change the internal potting. . "How is the temperature measured by the assembly sensor of the temperature sensor?" By direct voltage measurement. By changes in resistance. By changes in current. By changes in capacitance. . What is the first step in the cleaning procedure for the temperature sensor? Clean the temperature sensor with denaturized ethyl alcohol. Install the protective cap on the electrical receptacle connector. Dry the temperature sensor with a clean dry low-pressure air jet. Finish the cleaning with a brass brush. . "What type of cloth should be used for cleaning the temperature sensor?" Lint-free cloth. Microfiber cloth. Paper towel. Cotton cloth. .

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