2A655 Volume 2 Unit Review 51-100(Industry Quiz)

Running a cloth along the length of the cable is the best way to determine if a cable has broken wires. This method allows for a visual inspection of the cable, as any broken wires will snag or catch on the cloth. Cutting the cable and inspecting for damage may be unnecessary and can potentially cause further damage. Running your hand along the length of the cable may not provide enough sensitivity to detect broken wires.

Backup rings are not necessary in a hydraulic system when the operating pressure is less than 1500 psi because backup rings are used to prevent extrusion of the O-ring or seal at high pressures. When the operating pressure is below 1500 psi, the O-ring or seal is not at risk of being extruded, so backup rings are not needed.

MS flareless fittings are designed primarily for use in high-pressure systems that are subjected to severe vibrations. These fittings are specifically designed to provide a secure and leak-free connection in such demanding environments. The flareless design eliminates the need for flaring the tubing, making installation easier and quicker. The fittings feature a double ferrule system that provides a strong grip on the tubing, ensuring it can withstand the high pressures and vibrations without loosening or leaking. Therefore, these fittings are the ideal choice for applications where both high pressure and severe vibrations are present.

The correct answer is nonself-locking and self-locking. Nonself-locking nuts do not have any mechanism to prevent them from loosening, so they rely on external devices like safety wire or cotter pins to secure them. On the other hand, self-locking nuts have a built-in locking feature, such as a nylon insert or a deformed thread, which helps to prevent them from loosening due to vibration or other forces. These two groups of aircraft nuts serve different purposes and are used in different applications depending on the level of security required.

The correct answer is "Only the solvent prescribed in the appropriate technical order." This means that the cleaning solvent to be used on common parts removed from the nosewheel steering system should only be the one specified in the relevant technical order. It is important to follow the prescribed solvent to ensure proper cleaning and maintenance of the parts. Using any other solvent may lead to damage or inefficiency in the cleaning process.

To check resistance, the digital multimeter function selector rotary switch should be placed on the Ohms setting. This is because Ohms is the unit used to measure resistance. By selecting this setting, the multimeter is able to accurately measure the resistance of the component being tested. The AC voltage and DC voltage settings are used to measure voltage, not resistance.

Heating a lubricant is never permissible. This is because heating a lubricant can cause it to degrade or lose its effectiveness. Heat can break down the chemical composition of the lubricant, leading to reduced lubrication and potential damage to the machinery or equipment it is used on. Therefore, it is best to avoid heating lubricants to ensure their optimal performance and longevity.

Before using a torque wrench, it is recommended to cycle it through its breakaway torque six times. This process helps to ensure that the torque wrench is properly calibrated and that any internal components are functioning correctly. Cycling the wrench multiple times helps to distribute lubrication evenly and allows for any initial stretching or settling of internal parts. By cycling the wrench six times, the user can have more confidence in the accuracy and reliability of the torque readings during actual use.

When using the skiving section of the hose cutting and skiving machine, the correct way to tell that the hose has been skived properly is when the wire braid appears bright, indicating that the skiving process has effectively removed the outer layer of rubber without disturbing the wires. This ensures that the hose is ready for proper assembly and connection without any obstructions or damage to the wire braid.

The correct answer is the possibility of a high-pressure line rupturing. This hazard is specific to the MJ-2A hydraulic test stand and not prevalent in other aerospace ground equipment. The high-pressure lines in the test stand carry hydraulic fluid under high pressure, and if a line ruptures, it can lead to serious injuries or damage. It is important to take precautions and follow safety protocols to prevent such incidents.

In a series circuit, the total resistance is equal to the sum of individual resistances. Using Ohm's Law (V = I * R), we can calculate the amperage by dividing the applied voltage by the total resistance. In this case, the applied voltage is 24 volts and the total resistance is 6 ohms. Therefore, the amperage is 4 amperes (24 volts / 6 ohms = 4 amperes).

The Avitech test stand two-stage flowmeter is calibrated for use with MIL-H-5606, MIL-H-83282, and MIL-H-6083. This means that the flowmeter is designed and calibrated to accurately measure the flow of these specific types of fluids. Using any other type of fluid may result in inaccurate readings.

The reason P-D-680 types I and II are being replaced with P-D-680 type III is because type III has a higher flashpoint. This means that it is less likely to ignite and cause a fire compared to types I and II. Therefore, type III is considered safer to use.

The oil-fog lubricator on the hose cutting machine is serviced with SAE-10 weight motor oil. This type of motor oil is suitable for use in machinery and equipment that requires lubrication. It has a lower viscosity compared to SAE-30 weight motor oil, making it more appropriate for the oil-fog lubricator. MIL-H-5606, on the other hand, is a hydraulic fluid specification and is not suitable for use in the lubricator.

The correct answer is "shoulders on the mandrels". When using a skiving machine, the length of skive is determined by the shoulders on the mandrels. The shoulders on the mandrels act as a guide for the skiving machine to determine how much material needs to be removed from the hose. By adjusting the position of the shoulders on the mandrels, the length of the skive can be controlled. This ensures that the skive is the correct length for the specific hose being worked on.

The correct answer is "RUN, OFF, and JOG". These three positions on the control switch of the clutch control box of the hose assembly machine allow different operations. The "RUN" position is used to start the machine and initiate the normal operation. The "OFF" position is used to stop the machine completely. The "JOG" position is used for manual control, allowing the machine to move in small increments for fine adjustments or troubleshooting purposes.

The correct answer is 180 degrees F. This means that the hydraulic fluid heater on the Avitech test stand will automatically shut off when the fluid reaches a temperature of 180 degrees Fahrenheit.

An ohmeter measures the resistance in an electrical circuit. When it reads infinity, it means that there is no continuity or connection between the two points being tested. This indicates an open circuit, where the flow of current is interrupted or blocked. Therefore, the correct answer is infinity.

The Avitech test stand's air pump lubricator is serviced with SAE-10 oil. This oil is specifically designed for lubricating air pumps and provides the necessary viscosity and lubrication properties to ensure smooth and efficient operation of the pump. Nitrogen is not used as a lubricant and SAE-30 oil may be too thick for the pump, causing increased friction and potential damage. Therefore, SAE-10 oil is the correct choice for servicing the air pump lubricator.

Room temperature vulcanized sealants are silicone-based because they cure at room temperature without the need for heat or additional curing agents. Silicone-based sealants are known for their flexibility, durability, and resistance to moisture, heat, and chemicals. They are commonly used in various applications such as construction, automotive, and electronics industries due to their excellent sealing properties.

The grip length of a bolt refers to the unthreaded area of the bolt. This is the portion of the bolt that is not covered by threads and is used to provide a secure grip or bearing surface when the bolt is tightened. The unthreaded area is typically located between the head of the bolt and the threaded portion, allowing for proper engagement and clamping force when the bolt is installed.

V V-P 236 is a type of lubricant that can be used to lubricate a hydraulic seal. It is an effective option for lubricating hydraulic seals because it is designed specifically for use in hydraulic systems. This lubricant helps to reduce friction and wear on the seal, ensuring smooth operation and preventing leaks. It is important to use the correct type of lubricant for hydraulic seals to ensure proper functioning and longevity of the seal.

Before using an ohmmeter, it is necessary to remove the power from the circuit. This is because an ohmmeter measures resistance, and if power is still applied to the circuit, it can interfere with the accuracy of the measurement. By removing the power, the circuit is de-energized, ensuring that the ohmmeter can accurately measure the resistance without any external factors affecting the reading.

The pressure system boost switch will shut down the Avitech stand high-pressure pump motor at a pressure of 70+/- 10 psig. This means that the motor will stop running when the pressure reaches anywhere between 60 psig and 80 psig.

In this situation, if the engine oil pressure does not register on the gauge within 5 seconds while starting the MC-A1, pushing the throttle in and turning off the master switch would be the appropriate action. This is because the lack of oil pressure could indicate a potential problem with the engine, and it is important to immediately stop the engine to prevent any further damage or potential hazards. Disengaging the clutch or changing out the faulty gauge would not address the underlying issue of the engine not registering oil pressure.

When clamping tubing to a rigid structure, a minimum clearance of 1/16 inch should be maintained. This clearance is necessary to allow for any expansion or movement of the tubing, preventing it from being compressed or damaged by the rigid structure. A larger clearance could result in instability or potential damage to the tubing, while a smaller clearance may restrict movement and cause stress on the tubing. Therefore, 1/16 inch is the appropriate minimum clearance to ensure the tubing remains secure and undamaged.

Unused hydraulic fluid from containers that are opened for thrust cleaning should be transferred to a properly marked plastic pump-handle bottle. This is the correct answer because transferring the unused hydraulic fluid to a properly marked plastic pump-handle bottle allows for proper storage and prevents contamination or spillage. It is important to properly label the bottle to ensure that it is easily identifiable and distinguishable from other fluids.

When the drive motor on the hose cutting and skiving machine exceeds its full-load current, the overload relay will protect the motor. An overload relay is a device that is designed to monitor the current flowing through the motor. If the current exceeds a certain threshold, indicating an overload condition, the overload relay will trip and disconnect the motor from the power source, preventing any damage or overheating to the motor. Therefore, in this scenario, the overload relay is the correct answer as it is specifically designed to protect the motor from excessive current.

After the A/M32A-60 generator set has reached 95% of governed speed, it is recommended to reset the AC system. This is important because resetting the AC system helps to ensure that the system is functioning properly and any potential issues or errors are resolved. By resetting the AC system, any temporary faults or malfunctions can be cleared, allowing the system to operate efficiently and effectively. It is a standard procedure to reset the AC system after the generator set has reached a certain speed to maintain the optimal performance of the system.

Aluminum oxide paper can be used to clean most surfaces because it is a versatile abrasive material. It is known for its durability and ability to effectively remove rust, paint, and other stubborn materials from various surfaces. It is commonly used in woodworking, metalworking, and automotive industries due to its high performance and long-lasting nature.

The intensity of current is measured in amperes. Amperes is the unit used to quantify the flow of electric charge per unit time. It represents the rate at which electric charges pass through a given point in a circuit. Volt is the unit of electric potential difference, which is not used to measure current intensity. Cycles, on the other hand, is a unit of frequency and is not related to measuring current.

After pumping the B-5 stand up to the desired height, closing the vent plugs is the next logical step. This is important to prevent any air or gas from entering or escaping the stand, ensuring that it remains stable and secure at the desired height. Installing the locks and storing the handpump handle may be necessary actions at some point, but closing the vent plugs takes priority to maintain the stability and safety of the stand.

The dash number in the part number of a curing sealant can determine its work life. The dash number is often used to indicate variations or different formulations of a product. In the case of a curing sealant, different dash numbers may indicate different curing times or work lives. Therefore, by looking at the dash number in the part number, one can determine the work life of the curing sealant.

To change an analog multimeter's range or function switch without removing the test loads from the circuit, you need to depress the "push to open and rest" control. This control is designed to temporarily disconnect the test leads from the circuit, allowing you to safely switch the range or function without affecting the readings or causing any damage to the multimeter or the circuit. By depressing this control, you ensure that the test loads are disconnected before making any changes, providing a convenient and safe way to switch between different settings on the multimeter.

The correct answer is PHASE A because the A/M 32A-86 generator meter selector is used to select the phase of the generator that the meter will measure. Since the question asks for the position that is normally used, it can be inferred that PHASE A is the most commonly selected option.

An insulator is a substance that has tightly bound orbiting electrons. This means that the electrons in an insulator are strongly attracted to their respective atoms and are not easily moved or transferred. This property of tightly bound electrons makes insulators poor conductors of electricity and heat.

To obtain an accurate reading while using a plumb bob to level a large aircraft prior to jacking, the plumb bob should be free-handed at a distance of 3.0 feet. This distance ensures that the plumb bob is far enough away from the aircraft to minimize any potential interference or influence on the accuracy of the reading.

The pressure that force free electrons through a conductor is called the electromotive force or the voltage. This is because voltage is a measure of the electric potential difference between two points in a circuit, which causes the electrons to flow. Amperage, on the other hand, refers to the amount of electric current flowing through a conductor, while resistance is a measure of the opposition to the flow of electric current. Therefore, voltage is the correct answer as it directly relates to the pressure that drives the electrons.

The correct answer is cylinder piston rod sleeve. The question is asking about the rotation of the lock assembly on the B-1 stand. The lock assembly rotates around the cylinder piston rod sleeve, which is a component of the cylinder. The outer pistons and cylinder barrel assembly are not mentioned in relation to the rotation of the lock assembly. Therefore, the cylinder piston rod sleeve is the correct answer.

The correct answer is B-2. The B-2 maintenance stand uses four adjustable screw-type pads for leveling.

If a medium pressure nipple and nut assembly bottoms on the mandrel while the brake is applied and the hose assembly machine is in the forward running position, the overriding head will start to turn. This means that the force applied to the assembly will cause the head to rotate, potentially causing damage to the machine.

The bullet in a Rosan fitting is used to protect the seal. It acts as a barrier between the seal and any potential damage or debris that could affect its effectiveness. By placing the bullet in the fitting, it ensures that the seal remains intact and is not compromised during the resealing process. This helps to maintain the functionality and longevity of the fitting.

A pilot light assembly is used to indicate clogging of the Avitech test stand high-pressure system filter. When the filter is clogged, the pilot light will turn on, indicating that there is an issue with the filter. This allows the user to quickly identify and address the clogging problem, ensuring the proper functioning of the high-pressure system.

Antiseize thread compound is used on pipe fittings. This compound helps prevent corrosion and seizing of the threads, allowing for easier assembly and disassembly of the fittings. By applying the antiseize compound, it reduces friction and prevents galling, ensuring a tight and secure connection between the pipes. This is especially important in applications where the fittings are exposed to harsh environments or high temperatures, as it helps prolong the lifespan of the fittings and prevents leakage.

The small hole near the end of a control rod is designed to check the thread engagement. This means that it allows for visual inspection of the connection between the control rod and the object it is attached to. By checking the thread engagement, one can ensure that the control rod is securely fastened and properly aligned, thus ensuring its effectiveness in controlling or maneuvering the object it is connected to.

An ohmmeter is connected in parallel in a circuit. This means that the ohmmeter is connected to the circuit in a way that allows the current to flow through both the circuit and the ohmmeter simultaneously. This configuration ensures that the ohmmeter measures the resistance of the circuit accurately, as it does not interfere with the flow of current in the circuit.

DD form 0-365-3 is used to find the basic information to compute an aircraft's center of gravity (CG).

To control the aircraft's rate of descent while using the hydraulic pumping unit to downjack, you would use the flow control valves at the end of the hoses. These valves regulate the flow of hydraulic fluid, which in turn controls the speed at which the hydraulic jacks lower the aircraft. By adjusting the flow control valves, you can effectively control the rate of descent and ensure a safe and controlled lowering of the aircraft.

During the operation of the MJ-2A hydraulic test stand, the condition of the low pressure filters can be determined by measuring the filter outlet pressure. This is because the filter outlet pressure indicates the pressure at which the fluid is leaving the filter. If the pressure is too high, it could indicate a clogged or dirty filter, while a low pressure could indicate a damaged or ineffective filter. Therefore, monitoring the filter outlet pressure allows for the detection of any potential issues with the low pressure filters.

When using a liquid nitrogen unit, it is important to adjust the pressure regulator slowly to prevent overheating. This is because sudden adjustments can cause an increase in pressure, leading to excessive heat generation. Overheating can be dangerous and may cause damage to the equipment or even lead to explosions. Therefore, it is crucial to make gradual adjustments to ensure safe and efficient operation of the liquid nitrogen unit.