Aerospace Ground Equipment Vol. 3

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Quizzes Created: 5 | Total Attempts: 5,082
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  • 1/100 Questions

    Most troubleshooting on a motor can be done using a

    • Megger
    • Growler
    • Multimeter
    • Clamp-on ammeter
Please wait...
About This Quiz

This quiz, titled 'Aerospace Ground Equipment Vol. 3', assesses knowledge on converting electrical energy to mechanical energy, the function of motor components, and properties of different motor types. It is essential for learners in aerospace ground equipment training, enhancing understanding of motor mechanics and operations.

Aerospace Ground Equipment Quizzes & Trivia

Quiz Preview

  • 2. 

    Torque is defined as

    • Wattage

    • Horsepower

    • Rotational force

    • Opposition to applied voltage

    Correct Answer
    A. Rotational force
    Explanation
    Torque is defined as rotational force. It is the measure of the force that can cause an object to rotate around an axis. It is commonly used in physics and engineering to describe the twisting or turning force applied to an object. Torque is dependent on both the force applied and the distance from the axis of rotation. It is often measured in units such as Newton-meters (N-m) or foot-pounds (ft-lb).

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  • 3. 

    A lubricant performs which function when it deposits particles of dirt in the oil sump?

    • Cooling

    • Sealing

    • Cleaning

    • Reducing friction

    Correct Answer
    A. Cleaning
    Explanation
    When a lubricant deposits particles of dirt in the oil sump, it is performing the function of cleaning. As the lubricant circulates through the engine, it picks up dirt and contaminants, which are then deposited in the oil sump. This helps to prevent the dirt from circulating further and potentially causing damage to the engine components. By removing the particles of dirt from the oil, the lubricant helps to maintain the cleanliness and efficiency of the engine, ensuring optimal performance and longevity.

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  • 4. 

    What component holds a large amount of coolant in close contact with a large volume of air?

    • Radiator cap

    • Thermostat

    • Water pump

    • Radiator

    Correct Answer
    A. Radiator
    Explanation
    The radiator is the component that holds a large amount of coolant in close contact with a large volume of air. It is designed to transfer heat from the coolant to the surrounding air, allowing the coolant to cool down before it is recirculated back into the engine. This is achieved through a network of tubes and fins that increase the surface area available for heat transfer. As the coolant flows through the radiator, it releases heat to the air passing through it, helping to regulate the engine temperature and prevent overheating.

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  • 5. 

    Before connecting a generator set to the load bank, you should

    • Make sure input power cables are energized

    • Make sure all on-off switches are in the off position

    • Close the direct current (DC) section cooling fan doors

    • Place circuit breaker three-phase shock load to on position

    Correct Answer
    A. Make sure all on-off switches are in the off position
    Explanation
    Before connecting a generator set to the load bank, it is important to make sure that all on-off switches are in the off position. This is necessary to prevent any accidental power surges or electrical issues when connecting the generator to the load bank. By ensuring that the switches are off, it allows for a safe and controlled connection between the generator and the load bank, minimizing the risk of damage to the equipment or injury to individuals involved in the process.

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  • 6. 

    The filtration step protects the diesel engine fuel system from

    • Blockage of airflow

    • Lube system malfunctions

    • Slipping belts on the blower

    • Abrasion by foreign particles

    Correct Answer
    A. Abrasion by foreign particles
    Explanation
    The filtration step in the diesel engine fuel system is important because it helps to prevent abrasion caused by foreign particles. These particles can enter the fuel system and cause damage to the engine components, leading to decreased performance and potential breakdowns. By using a filtration system, these particles are trapped and prevented from causing abrasion, ensuring the smooth operation and longevity of the fuel system.

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  • 7. 

    Before you load and after you unload the gas turbine compressor (GTC), allow the engine to operate unloaded to

    • Decrease noise

    • Allow for flameouts

    • Reduce thermal stress

    • Allow for positioning of the service hose

    Correct Answer
    A. Reduce thermal stress
    Explanation
    Operating the engine unloaded before loading and unloading the gas turbine compressor (GTC) helps reduce thermal stress. This is because running the engine without any load allows it to cool down gradually, preventing sudden temperature changes that can cause thermal stress and potential damage to the engine components. By reducing thermal stress, the engine's longevity and performance can be improved.

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  • 8. 

    The type of injector that is operated by a rocker arm is

    • Spray

    • Pintle

    • Pressure

    • Mechanical

    Correct Answer
    A. Mechanical
    Explanation
    A mechanical injector is operated by a rocker arm. The rocker arm is connected to the injector and is responsible for opening and closing the injector valve. When the rocker arm moves, it pushes down on the injector valve, allowing fuel to be injected into the engine. This type of injector is commonly found in older vehicles and is known for its simplicity and reliability.

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  • 9. 

    During operation of a turbine engine, fuel and air mixed are ignited in the

    • Fuel atomizer

    • Combustor can

    • Mixer assembly

    • Plenum chamber

    Correct Answer
    A. Combustor can
    Explanation
    During the operation of a turbine engine, fuel and air are mixed and then ignited in the combustor can. The combustor can is a component of the engine where the combustion process takes place. It is designed to provide a controlled environment for the fuel and air mixture to burn efficiently, generating the necessary energy to power the turbine. The combustor can is specifically engineered to withstand high temperatures and pressures, ensuring the safe and effective combustion of the fuel-air mixture.

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  • 10. 

    Three different loads can be supported at the same time by a

    • Direct current (DC) generator

    • Single-phase generator

    • Two-phase generator

    • Three-phase generator

    Correct Answer
    A. Three-phase generator
    Explanation
    A three-phase generator is capable of supporting three different loads at the same time because it generates three separate alternating currents that are 120 degrees out of phase with each other. This allows for a more balanced and efficient distribution of power to the loads. Each load can be connected to one of the three phases, ensuring that the generator can handle multiple loads simultaneously without overloading or causing imbalances in the system.

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  • 11. 

    To change electrical energy to mechanical energy is the purpose of a

    • Generator

    • Converter

    • Inverter

    • Motor

    Correct Answer
    A. Motor
    Explanation
    A motor is a device that converts electrical energy into mechanical energy. It does this by using the principle of electromagnetism, where the interaction between electric current and magnetic fields generates a force that causes the motor to rotate. This rotation can then be used to perform mechanical work, such as driving a machine or a vehicle. Generators, converters, and inverters are devices that primarily deal with the conversion or manipulation of electrical energy, but they do not directly convert it into mechanical energy like a motor does.

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  • 12. 

    Which liquid cooling system component circulates the coolant?

    • Vacuum valve

    • Water pump

    • Cooling fan

    • Radiator

    Correct Answer
    A. Water pump
    Explanation
    The water pump is responsible for circulating the coolant in a liquid cooling system. It is designed to move the coolant through the system, ensuring that it reaches all the necessary components to absorb heat and maintain optimal operating temperatures. Without the water pump, the coolant would not flow, leading to overheating and potential damage to the system.

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  • 13. 

    The best step in preventing abnormal amounts of carbon, moisture, and sludge buildup in a diesel engine, is to

    • Avoid operating the engine for extended periods at no-load

    • Operate the unit at idle speed for long periods of time

    • Drain moisture from fuel system periodically

    • Perform a preoperational check

    Correct Answer
    A. Avoid operating the engine for extended periods at no-load
    Explanation
    To prevent abnormal amounts of carbon, moisture, and sludge buildup in a diesel engine, it is best to avoid operating the engine for extended periods at no-load. This is because when the engine runs at no-load, it does not generate enough heat to burn off the carbon deposits and evaporate the moisture, leading to a buildup of these substances. By avoiding extended periods of no-load operation, the engine can reach higher temperatures and effectively burn off carbon, evaporate moisture, and prevent sludge buildup.

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  • 14. 

    During turbine engine operation, oil loss into the airflow system is prevented by the

    • Air-oil seals

    • Oil tank baffles

    • Exhaust vent line

    • Pressure relief valve

    Correct Answer
    A. Air-oil seals
    Explanation
    Air-oil seals are used to prevent oil loss into the airflow system during turbine engine operation. These seals create a barrier between the oil and the airflow, ensuring that oil does not leak into the engine's airflow system. This is important because oil in the airflow system can cause damage to the engine components and reduce its efficiency. By using air-oil seals, the engine can maintain proper lubrication without the risk of oil contamination in the airflow system.

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  • 15. 

    When using a load bank to test a generator, follow the procedures outlined in the

    • Generator technical order (TO) and career development course (CDC)

    • Load bank TO, generator TO, and CDC

    • Generator TO and load bank TO

    • Load bank TO and CDC

    Correct Answer
    A. Generator TO and load bank TO
    Explanation
    The correct answer is "generator TO and load bank TO." When using a load bank to test a generator, it is important to follow the procedures outlined in both the generator technical order (TO) and the load bank TO. The generator TO provides specific instructions and guidelines for operating and testing the generator, while the load bank TO provides instructions for properly connecting and using the load bank during the testing process. By following both the generator TO and load bank TO, one can ensure that the generator is tested accurately and safely.

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  • 16. 

    If the gas turbine compressor (GTC) load control butterfly valve opens too slowly or too quickly, what is the most probable cause of the malfunction?

    • Excessive exhaust gas temperature

    • Maladjusted rate adjustment screw

    • Ruptured actuator diaphragm

    • Defective relief valve

    Correct Answer
    A. Maladjusted rate adjustment screw
    Explanation
    If the gas turbine compressor (GTC) load control butterfly valve opens too slowly or too quickly, the most probable cause of the malfunction is a maladjusted rate adjustment screw. The rate adjustment screw is responsible for controlling the speed at which the valve opens or closes. If it is not properly adjusted, it can result in the valve opening too slowly or too quickly, leading to a malfunction in the GTC load control system.

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  • 17. 

    To reverse the direction of rotation of a three-phase inductive motor, you must reserve

    • All three phases

    • Any two power leads

    • A and B phases only

    • B and C phases only

    Correct Answer
    A. Any two power leads
    Explanation
    To reverse the direction of rotation of a three-phase inductive motor, you need to interchange any two power leads. This is because the direction of rotation of a motor is determined by the sequence of the three-phase power supply. By swapping any two power leads, the sequence is reversed, causing the motor to rotate in the opposite direction.

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  • 18. 

    The stator windings of a synchronous motor are spaced

    • 20 degrees apart

    • 30 degrees apart

    • 90 degrees apart

    • 120 degrees apart

    Correct Answer
    A. 120 degrees apart
    Explanation
    The stator windings of a synchronous motor are spaced 120 degrees apart. This spacing allows for a balanced and smooth operation of the motor. The 120-degree phase difference between the windings ensures that the magnetic fields produced by each winding are evenly distributed around the stator. This balanced distribution of magnetic fields helps in achieving a constant and efficient rotation of the motor's rotor. Additionally, the 120-degree spacing also helps in reducing harmonic distortions and improving the overall performance of the synchronous motor.

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  • 19. 

    During a preoperational inspection of a gas turbine engine, you should check the intake and exhaust for

    • Leakage

    • Excess heat

    • Hairline cracks

    • Foreign objects

    Correct Answer
    A. Foreign objects
    Explanation
    During a preoperational inspection of a gas turbine engine, it is important to check the intake and exhaust for foreign objects. This is because foreign objects, such as debris, dust, or small particles, can obstruct the airflow and cause damage to the engine. These objects can also lead to inefficient combustion and reduced engine performance. Therefore, it is necessary to inspect and remove any foreign objects to ensure the proper functioning of the engine. Checking for leakage, excess heat, and hairline cracks are also important, but in this case, the primary concern is foreign objects.

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  • 20. 

    Which causes gray or white smoke to pour from the exhaust stack on the gas turbine compressor (GTC)?

    • Excessive engine revolutions per minute (rpm)

    • Excessive engine exhaust temperature

    • Oil that enters the airflow system

    • Fuel mixing with the airflow

    Correct Answer
    A. Oil that enters the airflow system
    Explanation
    When oil enters the airflow system of a gas turbine compressor (GTC), it can cause gray or white smoke to pour from the exhaust stack. This is because the oil mixes with the airflow and is burned along with the fuel, resulting in the smoke. Excessive engine revolutions per minute (rpm) and engine exhaust temperature may cause other issues, but they are not directly related to the smoke pouring from the exhaust stack.

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  • 21. 

    The three-phase induction motor does not require

    • Slip

    • A rotor

    • A stator

    • A starting device

    Correct Answer
    A. A starting device
    Explanation
    The three-phase induction motor does not require a starting device because it operates on the principle of electromagnetic induction. When a three-phase supply is connected to the stator windings, a rotating magnetic field is produced, which induces currents in the rotor. These currents create a magnetic field in the rotor, causing it to rotate. As a result, the motor starts rotating without the need for any additional starting device such as a starter motor or capacitor.

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  • 22. 

    When using a troubleshooting chart, what are you not likely to find?

    • Analysis

    • Rememdies

    • Symptoms

    • Probable causes

    Correct Answer
    A. Analysis
    Explanation
    When using a troubleshooting chart, it is unlikely to find an "Analysis" section. A troubleshooting chart typically includes information on remedies, symptoms, and probable causes to help identify and resolve issues. The purpose of a troubleshooting chart is to guide users in diagnosing and fixing problems, rather than providing an analysis of the situation. Therefore, an "Analysis" section is not commonly included in such charts.

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  • 23. 

    Aside from idle speed, the limiting speed governor through the use of flyweights and spring tension controls

    • Load speed

    • Minimum speed

    • Maximum speed

    • Intermediate speed

    Correct Answer
    A. Maximum speed
    Explanation
    The limiting speed governor, using flyweights and spring tension controls, is responsible for regulating the maximum speed of a vehicle or machine. This governor mechanism restricts the speed to a predetermined limit, ensuring that it does not exceed a certain threshold. The other options, such as load speed, minimum speed, and intermediate speed, are not relevant in this context as they do not pertain to the maximum speed regulation.

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  • 24. 

    In the gas turbine engine, cooling air for the transformer rectifier is provided by the

    • Cooling fan

    • Starter motor

    • Fuel pump and control unit

    • Multiple centrifugal switch assembly

    Correct Answer
    A. Cooling fan
    Explanation
    In a gas turbine engine, the cooling air for the transformer rectifier is provided by the cooling fan. The cooling fan is responsible for circulating air and preventing overheating of various components, including the transformer rectifier. It helps maintain optimal operating temperatures and ensures the efficient functioning of the engine. The other options mentioned, such as the starter motor, fuel pump and control unit, and multiple centrifugal switch assembly, are not directly involved in providing cooling air for the transformer rectifier.

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  • 25. 

    During gas turbine engine operation, the air is accelerated by the

    • Diffusers

    • Exducers

    • Impellers

    • Deswirl ring

    Correct Answer
    A. Impellers
    Explanation
    Impellers are rotating components in a gas turbine engine that accelerate the air. They consist of blades or vanes that increase the velocity and pressure of the incoming air. As the impellers rotate, they draw in air and force it out at a higher speed, creating a high-velocity airflow. This accelerated air is then directed towards the combustion chamber, where it mixes with fuel and ignites to produce the necessary power for the engine. Therefore, impellers play a crucial role in increasing the air velocity and facilitating the combustion process in a gas turbine engine.

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  • 26. 

    Which three things are necessary to produce an electromotive force (EMF) mechanically?

    • EMF, relative motion, and magnetic field

    • Magnet, lines of force, and relative motion

    • Magnetic field, a conductor, and relative motion

    • Counter-electromotive force (CEMF), a conductor, and magnetic field

    Correct Answer
    A. Magnetic field, a conductor, and relative motion
    Explanation
    To produce an electromotive force (EMF) mechanically, three things are necessary. Firstly, a magnetic field is required, as it is the presence of a magnetic field that induces the generation of an EMF. Secondly, a conductor is needed to allow the flow of electrons and create a potential difference. Finally, relative motion between the magnetic field and the conductor is necessary to generate the EMF. This relative motion causes the magnetic field to cut across the conductor, resulting in the production of an EMF.

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  • 27. 

    What type of loads can be applied to a generator under test by the A/M24T-8 electrical test set?

    • Inductive and resistive

    • Reactive and resistive

    • Inductive only

    • Resistive only

    Correct Answer
    A. Reactive and resistive
    Explanation
    The A/M24T-8 electrical test set can apply both reactive and resistive loads to a generator under test. This means that it is capable of simulating both inductive and resistive loads, allowing for a comprehensive testing of the generator's performance under different load conditions.

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  • 28. 

    What maximum alternating current (AC) resistive load can the portable load bank apply to a generator?

    • 65 kilowatts

    • 70 kilowatts

    • 75 kilowatts

    • 80 kilowatts

    Correct Answer
    A. 75 kilowatts
    Explanation
    The portable load bank is capable of applying a maximum alternating current (AC) resistive load of 75 kilowatts to a generator.

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  • 29. 

    When troubleshooting any electrical system, you can locate a starting point by first finding the

    • Common ground bus

    • Main circuit breaker

    • External power source

    • Last known source of power

    Correct Answer
    A. Last known source of power
    Explanation
    When troubleshooting any electrical system, it is important to start by identifying the last known source of power. This is because any issues or faults in the system are likely to originate from this point. By examining the last known source of power, such as a power outlet or a power supply, technicians can determine if there are any problems with the power supply itself or if the issue lies further down the electrical system. This helps in narrowing down the troubleshooting process and efficiently identifying and resolving the problem.

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  • 30. 

    In a series-wound dierect current (DC) motor, speed is dependent on the

    • Load

    • Torque

    • Armature

    • Field winding

    Correct Answer
    A. Load
    Explanation
    In a series-wound DC motor, the speed is dependent on the load. This means that the speed of the motor will vary depending on the amount of load or resistance that is applied to the motor. As the load increases, the speed of the motor will decrease, and vice versa. The load affects the torque produced by the motor, which in turn affects the speed. Therefore, the load is a crucial factor in determining the speed of a series-wound DC motor.

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  • 31. 

    Perform an operational check of the unit

    • At the last minute

    • With the defective part removed

    • Before final reassembly of the enclosure

    • As soon as you replace the defective part

    Correct Answer
    A. Before final reassembly of the enclosure
    Explanation
    The correct answer is to perform an operational check of the unit before final reassembly of the enclosure. This means that before putting all the parts back together, it is important to check if the unit is functioning properly. By doing this, any issues or defects can be identified and resolved before completing the reassembly process. This ensures that the unit is fully operational and ready for use once it is fully assembled.

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  • 32. 

    The component most likely to be damaged by poorly filtered fuel is the

    • Combustion chamber

    • Transfer pump

    • Fuel lines

    • Injectors

    Correct Answer
    A. Injectors
    Explanation
    Poorly filtered fuel can contain impurities such as dirt, debris, and contaminants that can clog and damage the injectors. Injectors are responsible for delivering the fuel into the combustion chamber in a precise and controlled manner. If these injectors become damaged, they may not be able to properly atomize the fuel, leading to inefficient combustion, reduced engine performance, and potential engine damage. Therefore, the injectors are the component most likely to be damaged by poorly filtered fuel.

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  • 33. 

    What must be accomplished to supercharge a diesel engine?

    • Change the overlap and timing so that the intake and exhaust valves are not open at the same time

    • Change the overlap and timing so that the intake and exhaust valves are open at the same time

    • Advance exhaust valve opening time

    • Retard intake valve opening time

    Correct Answer
    A. Change the overlap and timing so that the intake and exhaust valves are open at the same time
    Explanation
    To supercharge a diesel engine, the overlap and timing of the intake and exhaust valves need to be changed so that they are open at the same time. This allows for better air intake and exhaust flow, improving the engine's efficiency and power output. By having both valves open simultaneously, more air can enter the combustion chamber, resulting in increased combustion and greater engine performance. This adjustment helps to optimize the engine's air-fuel mixture and enhance overall power delivery.

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  • 34. 

    The A/M24T-8 electrical test set is capable of testing

    • Aerospace ground equipment (AGE) generator sets only

    • Alternating current (AC) power supplies only

    • Direct current (DC) power supplies only

    • AC and DC power supplies

    Correct Answer
    A. AC and DC power supplies
    Explanation
    The A/M24T-8 electrical test set is capable of testing both AC and DC power supplies. This means that it can be used to assess the functionality and performance of power supplies that provide both alternating current and direct current. It is not limited to testing only aerospace ground equipment (AGE) generator sets or only AC or DC power supplies.

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  • 35. 

    The boost pump on the gas turbine engine provides fuel to the

    • Fuel atomizer

    • Main fuel pump

    • Combustion chamber

    • Fuel air mixture valve

    Correct Answer
    A. Main fuel pump
    Explanation
    The boost pump on the gas turbine engine provides fuel to the main fuel pump. The main fuel pump is responsible for delivering the fuel to the combustion chamber, where it is mixed with air and ignited to produce the necessary power for the engine. Without the boost pump supplying fuel to the main fuel pump, the engine would not receive the proper fuel flow and the combustion process would be compromised. Therefore, the boost pump plays a crucial role in ensuring the proper functioning of the main fuel pump and the overall performance of the engine.

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  • 36. 

    Electrical contact between the stationary and rotating parts of a motor is the function of the

    • Field windings

    • Commutator

    • Bearings

    • Brushes

    Correct Answer
    A. Brushes
    Explanation
    The brushes in a motor are responsible for establishing electrical contact between the stationary and rotating parts. They are made of conductive material and are in constant contact with the commutator, which is mounted on the rotor. As the rotor spins, the brushes maintain contact with the commutator, allowing electrical current to flow from the stationary field windings to the rotating armature, thus enabling the motor to function properly.

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  • 37. 

    When performing a compression test, measuring pounds per square inch (psi), the maximum allowable deviation between cylinders is

    • 25 psi

    • 50 psi

    • 75 psi

    • 100 psi

    Correct Answer
    A. 25 psi
    Explanation
    During a compression test, the pressure in each cylinder is measured in pounds per square inch (psi). The maximum allowable deviation between cylinders refers to the acceptable difference in pressure readings between the cylinders. In this case, the correct answer is 25 psi, which means that the pressure readings in each cylinder should not differ by more than 25 psi. This ensures that the compression levels in all cylinders are relatively balanced and indicates a healthy engine performance.

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  • 38. 

    In the operation of a turbine engine, energy is extracted from the burning gases by the

    • Diffuser

    • Exhaust flange

    • Turbine wheel and exducer

    • Exhaust gas thermocouple

    Correct Answer
    A. Turbine wheel and exducer
    Explanation
    In the operation of a turbine engine, energy is extracted from the burning gases by the turbine wheel and exducer. The turbine wheel is responsible for converting the kinetic energy of the exhaust gases into mechanical energy, which is then used to drive the compressor and other components of the engine. The exducer, on the other hand, helps in reducing the pressure of the exhaust gases as they exit the turbine. Together, these components play a crucial role in extracting energy from the burning gases and powering the turbine engine.

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  • 39. 

    Normal acceleration characterisitics of the gas turbine compressor (GTC) include

    • Sudden rumbling noises after 35%

    • A decrease in vibration after 35%

    • Smooth and quiet acceleration

    • Burping

    Correct Answer
    A. A decrease in vibration after 35%
    Explanation
    The correct answer is a decrease in vibration after 35%. This means that as the gas turbine compressor (GTC) accelerates, there is a noticeable reduction in the level of vibration. This characteristic indicates that the GTC is operating smoothly and efficiently, without any excessive vibrations that could potentially cause damage or affect performance.

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  • 40. 

    Gas turbine compressor (GTC) operation with insufficient oil pressure is prevented by the

    • Oil pressure solenoid

    • Oil pressure switch

    • Oil drain switch

    • Ignition coil

    Correct Answer
    A. Oil pressure switch
    Explanation
    The oil pressure switch is responsible for preventing the operation of the gas turbine compressor (GTC) with insufficient oil pressure. This switch is designed to monitor the oil pressure in the system and if it falls below a certain threshold, it will send a signal to prevent the GTC from starting or running. This is crucial because operating the GTC without sufficient oil pressure can lead to damage and failure of the compressor, which can be costly to repair. Therefore, the oil pressure switch acts as a safety mechanism to ensure that the GTC operates within the required parameters.

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  • 41. 

    To increase the output of a generator, you must increase the

    • Load

    • Resistance of the conductor

    • Strength of the magnetic field

    • Counter-electromotive force (CEMF)

    Correct Answer
    A. Strength of the magnetic field
    Explanation
    To increase the output of a generator, you must increase the strength of the magnetic field. This is because the strength of the magnetic field determines the amount of induced current in the conductor, which in turn determines the output of the generator. By increasing the strength of the magnetic field, more lines of force will cut across the conductor, resulting in a higher induced current and therefore a higher output.

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  • 42. 

    After the A/M32A-60A generator set has shut itself down due to low fuel, the fuel level relay, K4, must be reset by

    • Turning the start switch OFF, then ON

    • Turning the master switch OFF, then ON

    • De-energizing the low-level lockout relay

    • De-energizing the low-level warning switch

    Correct Answer
    A. Turning the master switch OFF, then ON
  • 43. 

    When troubleshooting, the actual location of a terminal connection on the unit can best be found by using

    • The wiring diagram

    • Your past experience

    • The schematic diagram

    • The reference designation

    Correct Answer
    A. The wiring diagram
    Explanation
    The correct answer is the wiring diagram. When troubleshooting, the wiring diagram is the best tool to use in order to find the actual location of a terminal connection on the unit. The wiring diagram provides a visual representation of the electrical connections and components in the unit, allowing the technician to easily locate the terminal connection they are looking for. This diagram shows the specific wiring paths and connections, making it an invaluable resource in troubleshooting electrical issues.

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  • 44. 

    What is the purpose of the protective circuits of the A/M32A-86D?

    • Protects the generator electrical system against damage resulting from overload, overvoltage, undervoltage, and over/underfrequency

    • Protects the aircraft electrical system against damage resulting from an overload, overvoltage, undervoltage, and over/underfrequency

    • Senses fault conditions, stopping generator

    • Senses fault conditions, stopping the engine

    Correct Answer
    A. Protects the aircraft electrical system against damage resulting from an overload, overvoltage, undervoltage, and over/underfrequency
    Explanation
    The purpose of the protective circuits of the A/M32A-86D is to protect the aircraft electrical system against damage caused by overload, overvoltage, undervoltage, and over/underfrequency. These protective circuits are designed to detect fault conditions and prevent any potential damage to the electrical system by stopping the flow of electricity or taking appropriate corrective actions.

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  • 45. 

    When you check the concentricity of a commutator or slip rings, look for

    • Wear

    • Pitting

    • Roundness

    • Overheating

    Correct Answer
    A. Roundness
    Explanation
    When checking the concentricity of a commutator or slip rings, it is important to look for roundness. This means that the shape of the commutator or slip rings should be circular and not distorted or irregular. Roundness is crucial for proper functioning and smooth operation of the electrical contacts. If the commutator or slip rings are not round, it can lead to issues such as uneven brush wear, poor electrical contact, and increased friction. Therefore, roundness is an important factor to consider when inspecting the concentricity of a commutator or slip rings.

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  • 46. 

    Prior to operating any aerospace ground equipment (AGE), you should perform

    • A preoperational inspection

    • A serviceability check

    • A periodic inspection

    • An operational test

    Correct Answer
    A. A preoperational inspection
    Explanation
    A preoperational inspection should be performed prior to operating any aerospace ground equipment (AGE). This inspection ensures that the equipment is in proper working condition and ready for use. It involves checking various components and systems of the equipment to identify any potential issues or malfunctions. By conducting a preoperational inspection, operators can ensure the safety and efficiency of the equipment before using it. This helps prevent accidents, damage to the equipment, and promotes smooth operations.

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  • 47. 

    The resistive elements on the A/M24T-8 test set are best cleaned by

    • Blowing off with 5 pounds per square inch (psi)uncontaminated air

    • Blowing off with 15 psi uncontaminated air

    • Scrubbing with soap and water

    • Steam cleaning

    Correct Answer
    A. Blowing off with 5 pounds per square inch (psi)uncontaminated air
    Explanation
    The resistive elements on the A/M24T-8 test set are best cleaned by blowing off with 5 pounds per square inch (psi) uncontaminated air. This method is effective in removing dust, dirt, and other contaminants from the resistive elements without causing any damage. Using a lower pressure of 5 psi ensures that the air is gentle enough to clean the elements without causing any harm. Additionally, using uncontaminated air ensures that no further contaminants are introduced during the cleaning process.

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  • 48. 

    What indicator on the EPU-6/E frequency converter indicates an undervoltage condition?

    • Overvoltage

    • Out-of-phase

    • Undervoltage

    • Fault

    Correct Answer
    A. Undervoltage
    Explanation
    The indicator on the EPU-6/E frequency converter that indicates an undervoltage condition is the "undervoltage" indicator. This means that if the converter detects a lower than normal voltage supply, it will activate this indicator to alert the user of the undervoltage condition.

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  • 49. 

    The relationship between slip and torque can best be described as more

    • Torque causing slip

    • Slip causing more torque

    • Torque causing less slip

    • Slip causing less torque

    Correct Answer
    A. Slip causing more torque
    Explanation
    When there is slip in a system, it means that the actual speed of the system is different from the desired or intended speed. In the context of torque, slip causing more torque means that when there is slip, the torque produced in the system increases. This can be explained by the fact that slip causes a difference between the rotor speed and the synchronous speed in an electric motor, leading to an increase in the torque required to overcome this difference and maintain the desired speed. Therefore, slip causing more torque is the correct explanation for the relationship between slip and torque.

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Quiz Review Timeline (Updated): Mar 21, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Aug 16, 2012
    Quiz Created by
    Cwonder
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