2A672 Edit Code 7

When troubleshooting any electrical system, it is important to start by identifying the last known source of power. This is because if the power source is not functioning properly or has been disconnected, it could be the root cause of the issue. By checking the last known source of power, one can determine if there are any problems with the power supply and take appropriate steps to address them before moving on to other components of the system.

The A/M24T-16 load bank is designed to test both alternating current (AC) and direct current (DC) loads. This means that it can be used to simulate and measure the performance of electrical equipment that operates on either AC or DC power. Additionally, the load bank can also test generator exciters, which are devices used to regulate and control the output of a generator. Therefore, the load bank is versatile and can be used to assess the functionality and efficiency of a wide range of electrical equipment.

The correct answer is "Verification and resistance check". The A/M24T-16 load bank requires maintenance and troubleshooting, which involves both verification and resistance check. This means that the board(s) used for these purposes would need to perform both verification and resistance check functions.

When the A/M24T-16 load bank set load time has been reached, it indicates that the load test has been completed. At this point, the load is automatically removed, meaning that the load bank stops applying the load to the system being tested. After the load is removed, the cooling cycle begins, which allows the system to cool down and return to its normal operating temperature. This process ensures that the load bank and the system being tested are not subjected to excessive heat, which could potentially cause damage or affect the accuracy of the test results.

The deswirl ring on an A/M32A-95 gas turbine compressor is designed to smooth turbulent air flow. Turbulence in the air flow can cause inefficiencies and disruptions in the compressor's operation. The deswirl ring helps to eliminate or reduce turbulence by redirecting and guiding the air in a more controlled manner. This allows for a smoother and more efficient flow of air through the compressor, ultimately improving its performance.

When the size of the plates of a capacitor is increased, the distance between the plates decreases. This leads to an increase in the electric field between the plates, resulting in an increase in capacitance. Therefore, as the size of the plates increases, the capacitance also increases.

When there are eight electrons in the outermost shell of an atom, it is considered stable. This is because the outermost shell, also known as the valence shell, is fully filled with electrons, following the octet rule. This configuration gives the atom a stable electronic arrangement, as it has achieved a full outer shell, similar to the noble gases. Stable atoms are less likely to react with other elements and tend to have lower reactivity.

The speed of the self-generating nitrogen servicing cart's nitrogen booster compressor is determined by the programmable logic controller (PLC) circuit. The PLC circuit controls and regulates the operation of the compressor, allowing it to operate at the desired speed. This circuit can be programmed to adjust the speed based on various factors such as demand, pressure, or other parameters, ensuring optimal performance of the nitrogen booster compressor.

When there is a loss of residual magnetism in the exciter field poles, the generator needs to be field flashed. Field flashing involves connecting TB4-11 to a 14-volt direct current power source. This process helps to restore the residual magnetism in the field poles and allows the generator to produce electricity. Checking the field transformer and the fault display are also necessary steps to identify and address any potential issues that may have caused the loss of residual magnetism.

Electromagnetic induction refers to the phenomenon where voltage is induced in a conductor when it moves relative to a magnetic field. This occurs due to the interaction between the magnetic field and the electrons in the conductor, causing them to experience a force and thus generating an electric current. This principle is the basis for many important technologies, such as generators and transformers.

A diode is a two-terminal device that allows current to flow in one direction and blocks it in the opposite direction. This property is known as rectification and is essential for various electronic applications, such as converting AC to DC in power supplies. Therefore, the statement "It has the ability to conduct in one direction and not the other" accurately describes a diode.

A magnetic pick-up is a component that generates a frequency pulse train to serve as a reference for the engine speed in the B809A generator set speed control system. It is responsible for detecting the rotational speed of the engine and converting it into electrical signals, which are then used by the system to regulate and maintain the desired speed of the generator set.

Valence electrons are the electrons located in the outermost energy level of an atom. These electrons have the highest energy because they are furthest from the positively charged nucleus and are involved in chemical bonding. The other options, such as stationary electrons, orbiting electrons, and K shell electrons, do not accurately describe the electron with the most energy in an atom.

The holding current is the minimum current required to keep the SCR in the off state once it has been triggered. When the current drops below the holding current, the SCR turns off. Therefore, to turn off an SCR, the current must drop below the holding current.

Prior to using the EPU-6/E frequency converter, it is important to inspect the air inlets for blockage. This is because blockage in the air inlets can restrict the flow of air, which is essential for cooling the components of the converter. If the air inlets are blocked, it can lead to overheating of the components and potential damage to the converter. Therefore, inspecting the air inlets for blockage is necessary to ensure proper functioning and longevity of the EPU-6/E frequency converter.

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Frosting of a refrigeration system line or component indicates a blockage. When there is a blockage in the system, the flow of refrigerant is restricted, causing a decrease in pressure and temperature. This leads to the formation of frost on the affected area. Therefore, if frosting is observed, it is a clear indication that there is a blockage in the refrigeration system.

When the B809A generator set AC card detects a fault in the AC supply, it triggers the opening of the AC contactor. This action interrupts the flow of electricity from the generator, causing the generator output to stop. Therefore, the correct answer is that the AC contactor opens and the generator output stops.

The factors that affect the resistance of a material are its area, temperature, and type of material. The area of a material affects its resistance because a larger area allows for more current to flow through, resulting in lower resistance. Temperature also affects resistance, as an increase in temperature leads to an increase in resistance due to the increased collisions between the electrons and the atoms in the material. Lastly, the type of material affects resistance because different materials have different atomic structures and conductivities, which determine their resistance.

The torsion shaft is specifically designed to break if the engine locks up. This is a safety feature that prevents further damage to the engine. When the engine locks up, the torsion shaft is designed to absorb the excess torque and break, preventing the transmission of the excessive force to other components of the engine. This helps to protect the engine from further damage and potential catastrophic failure.

The major difference between a NPN and PNP transistor is the direction of current flow. In an NPN transistor, the current flows from the collector to the emitter, while in a PNP transistor, the current flows from the emitter to the collector. This difference in current flow direction is crucial when using transistors for different applications. An NPN transistor is commonly used as a switch, where it allows or blocks the flow of current depending on the input signal. On the other hand, a PNP transistor is often used as a regulator, where it controls the flow of current to maintain a stable output voltage.

The emitter in a unijunction transistor always points toward the base 1 lead. This is because in a unijunction transistor, the base 1 lead is the terminal that controls the current flow between the emitter and the other terminal (collector or gate). The emitter is connected to the base 2 lead, and its direction is determined by the orientation of the base 1 lead. Therefore, the emitter always points towards the base 1 lead.

During the operation of the EPU-6/E frequency converter, it has been determined that the E and F pin voltage is not required for the aircraft. Therefore, the loop/bypass/28 V to aircraft switch should be placed in the BYPASS position. This means that the converter will bypass the E and F pin voltage and provide power directly to the aircraft without utilizing those pins.

The best point to check voltage going to the A/M32A-86D generator exciter field is at J8, terminal D-F.

The probable cause of this trouble is the memory time-delay relay being energized. This relay is responsible for controlling the time delay in the system, and if it is energized, it can cause the AC contactor to open and prevent voltage indication on M2.

The memory time delay relay is a device that controls the time delay for certain functions in the A/M32A-86D. In this scenario, placing S13 in the BUILD UP position should not cause the UNDERVOLTAGE light to come on. Therefore, the probable cause of this trouble is the memory time delay relay malfunctioning, which could be preventing the correct voltage regulation and causing the undervoltage condition.

The torus assembly is the correct answer because it is the component that accelerates hot expanding gases and directs them into the nozzle ring. The other options listed are not involved in this process.

In a series-parallel circuit, the total current (IT) is equal to the sum of the currents in the series and parallel branches. Since I1 is the series current and I2 is the current in the parallel branches, we can calculate IT by adding I1 and I2 together. Given that I1 = 9 amps and I2 = 5 amps, IT = 9 + 5 = 14 amps.

To find the value of I3, we can use the fact that the current in a parallel branch splits between the two branches. Since I2 is 5 amps and the total current in the parallel branches is 9 amps (I1), the remaining current must be 4 amps (9 - 5 = 4). Therefore, I3 = 4 amps.

When the main tanks are ¾ full on the A/M32A-60A gas turbine engine, fuel transfer to the main tanks stops. This is likely a safety measure to prevent overfilling of the main tanks, which could lead to fuel spillage or other operational issues. By stopping the fuel transfer at this point, the system ensures that the main tanks do not exceed their intended capacity.

Air separator membranes (ASM) are the components that separate nitrogen from oxygen in the self-generating nitrogen servicing cart (SGNSC). They work by utilizing a membrane that allows nitrogen molecules to pass through while blocking oxygen molecules. This process helps to generate pure nitrogen gas, which can then be used for various applications such as aircraft maintenance, tire inflation, and industrial processes. By effectively separating nitrogen from oxygen, the ASM ensures that the nitrogen generated by the SGNSC is of high quality and suitable for the intended use.

To test the load contactor relay K1 using test probes, the automatic-manual voltage control switch must be placed in the AUTOMATIC position. This is because the automatic position allows the relay to function as intended and respond to the test probes accurately. Placing the switch in any other position may result in incorrect readings or the relay not responding to the test probes at all.

The given correct answer, "Turbine Start," is the switch on the A/M32A-95 gas turbine compressor that initiates the automatic starting cycle. This switch is responsible for starting the turbine and initiating the necessary processes for the gas turbine compressor to begin its operation.

A bridge rectifier is a circuit that converts alternating current (AC) to direct current (DC) by utilizing a combination of diodes. Fullwave rectification refers to the conversion of the entire AC waveform into a pulsating DC waveform. In a bridge rectifier, four diodes are arranged in a bridge configuration, allowing both the positive and negative halves of the AC waveform to be rectified. This results in a smoother and more consistent DC output compared to halfwave rectification, where only one half of the AC waveform is rectified. Therefore, the purpose of installing a bridge rectifier in an AC circuit is to provide fullwave rectification.

The correct answer is emitter, base 1, and base 2. In a unijunction transistor (UJT), the emitter is the terminal through which the majority carriers (electrons) flow out. The base 1 and base 2 are the two terminals that control the UJT's conduction. The base 1 terminal is used for triggering the UJT, while the base 2 terminal is used for regulating the UJT's conduction.

The electrostatic fields around a positive ion move outward. This is because positive ions have a deficiency of electrons, creating an imbalance of positive charge. As a result, the surrounding negative charges are attracted towards the positive ion, causing the electrostatic field lines to extend outward from the ion.

If K25 is energized during the operation of an A/M32A-60A, it means that the unit is functioning as intended and there are no issues or malfunctions. The energization of K25 does not cause any disruptions or changes in the unit's operation, indicating that it continues to operate normally.

A zener diode is connected in parallel to the load in order to protect it. When the voltage across the load exceeds the breakdown voltage of the zener diode, it starts conducting and limits the voltage to the breakdown voltage. This ensures that the load does not receive a voltage higher than the desired level, protecting it from damage. By connecting the zener diode in parallel to the load, it provides a low resistance path for excessive voltage, effectively shunting away the excess current and protecting the load.

The correct answer is "When input values are outside acceptable tolerances." This means that a current or voltage calibration on the A/M24T-16 load bank should be performed when the input values deviate from the acceptable range. Calibrations are necessary to ensure accurate and reliable measurements, and to maintain the performance of the load bank. By calibrating the load bank when input values are outside acceptable tolerances, any inaccuracies or deviations can be identified and corrected, ensuring that the load bank functions properly and provides accurate results.

The correct answer is "Every 6 months". This means that the input and output terminals of the EPU-6/E need to be inspected at least once every 6 months. This regular inspection ensures that the terminals are in proper working condition and helps prevent any potential issues or malfunctions. By inspecting the terminals every 6 months, any necessary maintenance or repairs can be identified and addressed in a timely manner, ensuring the optimal performance of the EPU-6/E.

The probable cause for the excessively high exhaust gas temperature in the A/M32A-60A generator set is the pneumatic thermostat. The pneumatic thermostat is responsible for regulating the temperature in the generator set, and if it is malfunctioning or not functioning properly, it can result in the exhaust gas temperature being too high.

When the butterfly valve is closed on an A/M32A-95 gas turbine compressor, chambers 1, 3, and 4 are pressurized.

Switch S15 to the L-N position. This is the correct answer because when the AC voltmeter is reading 200 volts on all three phases, it indicates that the meter is measuring the line-to-line voltage. Switching S15 to the L-N position will change the meter to measure the line-to-neutral voltage, which is the correct measurement for this situation. Adjusting VR1 or R61 would not be the appropriate action in this case.

The probable cause of the trouble is that S30 is shorted. This means that there is a connection between the two terminals of S30 that should not be there, causing a short circuit. As a result, the fault lights on the A/M32A-86D power unit remain on even after attempting to reset S23.

The contacts on the annunciator card of the B809A generator set that control the AC input to the voltage regulator are the ones related to the generator fault. These contacts are responsible for detecting any faults or issues with the generator, which can affect the AC input to the voltage regulator. By monitoring these contacts, the system can identify and address any problems with the generator to ensure proper functioning of the voltage regulator and overall system performance.

The secondary winding of a transformer is responsible for transferring the induced voltage from the primary winding to the load. It acts as a conductor, allowing the voltage to flow through it and deliver power to the connected device. The primary winding, on the other hand, is responsible for receiving the input voltage and creating a magnetic field that induces the voltage in the secondary winding. The stationary and field options are not relevant to this explanation.

A zener diode is connected in parallel to the load in a solid state circuit to regulate voltage. When connected in parallel, the zener diode acts as a voltage regulator by maintaining a constant voltage across the load. It achieves this by allowing current to flow through it in the reverse direction when the voltage across the load exceeds the zener voltage. This causes the excess voltage to be dropped across the zener diode, keeping the voltage across the load constant.

The injector pump is responsible for distributing and delivering an accurate amount of fuel to the engine cylinders. It is a crucial component in the fuel system of the B809A generator set, ensuring that the engine receives the right amount of fuel for optimal performance. The injector pump pressurizes the fuel and delivers it to the injectors, which then spray the fuel into the engine cylinders for combustion. Without the injector pump, the engine would not receive the necessary fuel supply, leading to poor performance or even engine failure.

During the first cycle of alternating current (AC) in a circuit using a bridge rectifier, two diodes are forward biased. A bridge rectifier consists of four diodes arranged in a bridge configuration. During the positive half-cycle of the AC input, the two diodes on the top of the bridge become forward biased and conduct current, while the two diodes on the bottom are reverse biased and do not conduct. Therefore, only two diodes are forward biased during the first cycle of AC.

A loose push-on connector on the output filter capacitor can cause the malfunction because it can result in a poor electrical connection. This can lead to an imbalance in the voltage distribution among the phases, causing one phase voltage to be lower than the other two.

If the arrow in a bipolar transistor is pointing away from the base, it indicates that it is an NPN transistor. In an NPN transistor, the majority charge carriers are electrons (N-type), and the arrow pointing away from the base represents the direction of electron flow.