2AX5X V2 CDCs Quiz

An electrically controlled solenoid valve is advantageous because it has a reduced weight compared to other types of valves. This reduced weight makes it easier to install and handle, especially in applications where weight is a critical factor. Additionally, the reduced weight can also contribute to improved efficiency and lower energy consumption.

Classifications of fuel leaks are necessary in order to determine whether or not they constitute a flight safety hazard. This is important because fuel leaks can pose a significant risk to the safety of an aircraft and its passengers. By classifying the fuel leaks, experts can assess the severity of the leak and take appropriate measures to prevent accidents or incidents during flight. This classification helps in identifying potential hazards and allows for timely maintenance and repairs to ensure the safety of the aircraft and everyone on board.

The correct answer is 27 gallons. This means that the MJ-2A reservoir is designed to hold a total of 27 gallons of fluid.

When soft iron is brought close to a permanent magnet, the magnetic domains in the soft iron align themselves with the magnetic field of the permanent magnet. This alignment causes the soft iron to become magnetized, meaning it acquires its own magnetic field and becomes a temporary magnet. This magnetization occurs due to the interaction between the magnetic fields of the soft iron and the permanent magnet.

A 24-volt nickel-cadmium battery typically consists of 12 cells connected in series. Each cell produces around 2 volts, so when they are connected in series, the total voltage adds up to 24 volts. Therefore, the correct answer is 12 cells.

The term "displacement" refers to the amount of fluid that a pump is able to produce on each cycle or revolution. It represents the volume of fluid that is displaced by the pump during its operation. The other options, purgement, volume, and rating, do not accurately describe the specific measure of fluid production by a pump.

One micron is a unit of length measurement commonly used in science and engineering. It is equal to one millionth of an inch. This means that one micron is a very small unit, indicating that it is much smaller than an inch. Therefore, the correct answer is "millionths of an inch."

The correct answer is "butterfly" because a disc type valve in a fuel system is commonly referred to as a butterfly valve. This type of valve consists of a disc or plate that rotates on a shaft to control the flow of fuel. The disc resembles the shape of a butterfly when it is fully open, hence the name. This valve is widely used in fuel systems due to its simple design and efficient operation.

Viscosity refers to the thickness or resistance to flow of a liquid. In the context of fuel, a higher viscosity means that the fuel is thicker and less likely to mix with contaminants, allowing it to hold them in suspension. This is important because if contaminants settle at the bottom of the fuel tank, they can clog filters and cause engine damage. Therefore, a higher viscosity helps to keep contaminants suspended in the fuel, ensuring better engine performance and protection.

The maximum governed speed of the MB-4 Coleman is 20 mph. This means that the vehicle is designed to operate at a maximum speed of 20 mph, and it is likely limited by the vehicle's engine power or other factors. It is important to adhere to this speed limit to ensure safe and proper operation of the MB-4 Coleman.

A hydraulic reservoir serves multiple purposes. Firstly, it replenishes fluid in the system, ensuring that there is always an adequate supply. Secondly, it allows for thermal expansion, which is important as hydraulic systems generate heat during operation. The reservoir provides space for the fluid to expand without causing damage to the system. Lastly, the reservoir acts as a means of bleeding air from the system. Air can enter the hydraulic system during operation or maintenance, and the reservoir allows for the removal of air bubbles, ensuring the system functions properly.

Variable-volume pumps do not require a separate pressure-regulating device in the system because they have an integral compensator. This means that the pump is designed to automatically adjust its displacement in response to changes in system pressure, ensuring that the desired pressure is maintained without the need for an additional regulating device. The integral compensator allows the pump to deliver the required pressure without the risk of overloading the system, making it a more efficient and compact solution.

The dual-float system in fuel level control valves provides a double safety factor. This means that there are two floats that monitor the fuel level, providing redundancy in case one float fails. If one float fails to detect the fuel level accurately, the other float can still ensure the safe operation of the valve. This double safety factor helps prevent fuel overfilling or underfilling, reducing the risk of accidents or damage to the fuel system.

Microbial growth can form red, brown, gray, or black slime in the fuel. This is because microorganisms such as bacteria and fungi can thrive in fuel tanks and feed on the hydrocarbons present in the fuel. As they grow and multiply, they can produce slime or biofilm that can clog fuel filters and injectors, leading to engine performance issues. The color of the slime can vary depending on the type of microorganisms present and other factors such as the presence of certain minerals or impurities in the fuel.

The correct answer is 49. This suggests that the horsepower rating of the diesel engine powering SGNSC is 49.

The clevis bolt is never used in areas where tension is present because it has a pin and cotter arrangement that allows for rotation and movement. However, it is often used as pins in control systems because it provides a secure and adjustable connection. The stud bolt, eyebolt, and hexhead bolt are all commonly used in areas where tension is present due to their design and ability to withstand high levels of force.

The correct answer is "Hollow end toward the air side of the accumulator." This means that the piston should be installed with the hollow end facing the air side of the accumulator. This is because the air side of the accumulator is where the pressure is generated, and the hollow end allows for the movement of the piston in response to this pressure. Installing the piston in this direction ensures that it can effectively compress and expand as needed to store and release energy in the accumulator.

A pneudraulic system component that uses a double-acting balanced actuating cylinder is the nosewheel steering. This system allows for controlled steering of the aircraft's nosewheel during ground operations. The double-acting cylinder ensures that the steering mechanism can move in both directions, providing precise and balanced steering control.

Inertia is the correct answer because it refers to the resistance of an object to change its motion. It is a property of matter that causes an object to continue moving in the same direction or remain at rest unless acted upon by an external force. Energy, friction, and potential are not directly related to the resistance of an object to change its motion.

The hydraulic systems on the MK-3A-1 hydraulic test stand are designated as Number 1 and Number 2.

Creep plates provide for cooler operation in a Stratopower variable-volume hydraulic pump. Creep plates are designed to reduce the heat generated by the pump during operation. They help dissipate the heat by increasing the surface area available for heat transfer, thereby keeping the pump cooler. This helps prevent overheating and ensures optimal performance and longevity of the pump.

The correct answer is without draining the fuel lines or tanks. This means that the rotary plug valve can be removed and replaced without the need to empty the fuel lines or tanks. This is advantageous as it saves time and effort, as well as minimizing the risk of fuel spillage or contamination.

Sediment in fuel that is visible to the naked eye is typically around 40 microns or larger. This means that any specks or granules of sediment that can be seen without the aid of a microscope or magnifying glass would be at least 40 microns in size.

The correct answer is 8,000 RPM. The constant speed drive (CSD) is used to drive a 60/80 kilovolt ampere (KVA) generator. The RPM (revolutions per minute) refers to the speed at which the CSD operates. Since the question states that the CSD is used to drive the generator, the appropriate RPM would be the one that matches the generator's requirements. In this case, the correct RPM is 8,000, as it is the only option that falls within the given range.

The underspeed switch (USS) on the 60/80 kilovolt ampere (KVA) generator constant speed drive (CSD) actuates at 365 Hz. This means that when the generator's speed drops below 365 Hz, the underspeed switch is triggered and activates a safety mechanism. This mechanism could include shutting down the generator or initiating a corrective action to prevent damage or failure.

The pistons in the Stratopower variable-volume pump are held in contact with the cam plate by the nutating plate. The nutating plate is responsible for the reciprocating motion of the pistons, ensuring that they maintain contact with the cam plate during operation. This contact allows for the transfer of fluid and the generation of pressure within the pump. The other options, such as fixed pivot, stationary bearing, and compensator piston, do not perform the same function of holding the pistons in contact with the cam plate.

The hydraulic manifold in a hydraulic system serves as a central point where multiple fluid lines can converge. It allows for the common fluid lines to come together, ensuring efficient distribution of the hydraulic fluid throughout the system. This arrangement simplifies the design and operation of the hydraulic system by providing a convenient location for the fluid lines to join and ensures that all components receive an adequate supply of fluid.

A compensator is a capacitance-type, fuel-indicating system component that allows for changes in fuel density. It is designed to adjust the measurement of fuel quantity based on variations in fuel density, ensuring accurate readings regardless of the density of the fuel being measured. Unlike inductors, capacitors, and potentiometers, compensators are specifically designed to compensate for changes in fuel density, making them the correct choice for this question.

The correct answer is green with a white band near the top. This is because GOX high-pressure cylinders are typically painted in this color scheme to indicate that they contain gaseous oxygen. The green color signifies the presence of oxygen, while the white band near the top helps to easily identify the cylinder and distinguish it from other cylinders.

The A/M32A-86 generator set's T-R produces a voltage of 28.5 VDC.

A pneudraulic system is a combination of pneumatic and hydraulic systems. It uses compressed air and hydraulic fluid to generate and transmit power. A single-acting actuating cylinder is a type of cylinder that can only exert force in one direction. In the context of the given options, the brake assembly is the component that uses a single-acting actuating cylinder. This is because the brake assembly needs to apply force to engage the brakes, but does not need to retract the brakes once they are engaged.

The air refueling (A/R) receptacle is operated hydraulically, meaning that it uses hydraulic power to function. However, it is controlled electrically, which means that the control of the A/R receptacle is done through electrical systems.

A standpipe in a reservoir is designed to reserve fluid for the emergency pump. In the event of a power failure or malfunction of the primary pump, the emergency pump can be activated to ensure a continuous supply of fluid. The standpipe acts as a reserve, storing an adequate amount of fluid to sustain the emergency pump until the primary pump can be repaired or replaced. This helps to prevent any interruption in the fluid supply and ensures the system remains functional during emergencies.

The manual slide-type hydraulic selector valve has the advantage of metering ability. This means that it can control the flow rate of hydraulic fluid in a precise and controlled manner. This is important in hydraulic systems as it allows for smooth and accurate movement of hydraulic actuators. By adjusting the position of the slide valve, the flow rate can be regulated, enabling precise control over the speed and force of the hydraulic system.

An inlet screen prevents foreign objects from holding the bypass valve open in a dual-impeller fuel pump. The purpose of the inlet screen is to filter out any debris or foreign objects that may enter the pump, ensuring that only clean fuel flows through the system. By preventing these objects from reaching the bypass valve, the inlet screen helps maintain proper functioning of the pump and prevents any blockages or malfunctions that could occur due to foreign objects.

The correct answer is the movement of the float in the tanks. In a direct current, liquid-level fuel indicating system, the wiper contact on the resistance strip is positioned by the movement of the float in the tanks. As the float moves up and down with the changing fuel level, it causes the wiper contact to move along the resistance strip, which in turn changes the resistance and provides an indication of the fuel level. Signals from the amplifier, voltage changes in the indicator circuit, and the amount of bleed air pressure applied to the tank do not directly affect the position of the wiper contact.

An aircraft taxiing at a constant speed is an example of Newton's First Law of Motion, also known as the law of inertia. According to this law, an object at rest or in motion will remain in that state unless acted upon by an external force. In the case of the aircraft, it will continue to move at a constant speed unless a force, such as the pilot applying the brakes or the engines changing the thrust, is applied to change its state of motion.

Float switches are most likely to control the automatic pump shutoff when all fuel is depleted from a fuel tank. Float switches are devices that detect the level of a liquid in a tank and activate or deactivate a pump or valve accordingly. In this case, when the fuel level drops to a certain point, the float switch will be triggered, signaling the pump to shut off and prevent damage to the pump or the tank.

Bearings depend on fuel for lubrication in an air refueling pump. Bearings are mechanical components that support the rotating shafts and reduce friction between moving parts. In this case, the bearings rely on fuel to provide lubrication, which helps to reduce wear and tear and ensure smooth operation of the pump. Without proper lubrication, the bearings could experience increased friction, leading to overheating, damage, and potentially the failure of the pump.

Turbulence in a hydraulic line disrupts the smooth flow of fluid, causing resistance to the flow. This resistance leads to a loss of energy as the fluid is forced to overcome the chaotic motion created by turbulence. Therefore, creating resistance and loss of energy is the correct answer.

The maximum pressure that the SGNSC can deliver high-pressure nitrogen is 4,400 psig.

The correct answer is engine oil and blast air. Brushless AC generators require cooling methods to prevent overheating. Engine oil is used to lubricate the generator's internal components and dissipate heat. It helps to maintain the generator's temperature within a safe range. Blast air is also used to cool the generator by blowing air over its surface, carrying away excess heat. This combination of engine oil and blast air provides an effective cooling system for brushless AC generators.

The fuel control in a jet engine is responsible for metering the fuel for combustion. It regulates the flow of fuel into the engine based on the engine's operating conditions, such as throttle position and air pressure. This ensures that the correct amount of fuel is supplied to achieve optimal combustion and engine performance. The pressurizing and dump valve, fuel nozzles, and fuel pump are all components that assist in the fuel delivery process, but the fuel control is the primary mechanism for metering the fuel.

A permanent magnet is produced from a material with high reluctance and low permeability because high reluctance means that the material resists the flow of magnetic flux, allowing it to retain its magnetism for a longer period of time. Low permeability means that the material does not easily allow magnetic flux to pass through it. This combination of high reluctance and low permeability allows the material to maintain its magnetism for a longer duration, making it suitable for use as a permanent magnet.

Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. In the case of an operating jet engine, the action is the expulsion of high-speed exhaust gases from the back of the engine, and the reaction is the forward thrust produced by the engine. This is because the expulsion of gases in one direction creates an equal and opposite force in the opposite direction, propelling the jet engine forward. Thus, Newton's Third Law of Motion is the best description for why an operating jet engine produces forward thrust.

The MK-3A-1 is driven by an electric motor. This means that the vehicle is powered by electricity rather than diesel, gasoline, or hydraulic power. An electric motor is a common choice for many vehicles as it offers a quiet and efficient operation, while also reducing emissions compared to traditional combustion engines.

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Hydraulic selector valves are typically controlled by solenoids. A solenoid is an electromechanical device that converts electrical energy into linear motion. It consists of a coil of wire wrapped around a metal core. When an electric current is passed through the coil, it creates a magnetic field that attracts or repels the metal core, causing it to move. In the case of hydraulic selector valves, the solenoid is used to control the flow of hydraulic fluid, allowing it to switch between different positions. Therefore, the correct answer is solenoid.

The correct answer is 150 to 280 degrees F. This is because the H-1 heater has an adjustable heat output that can be set within this temperature range.

The correct answer is 35C2-3-372-11. This technical order contains the operation and servicing information for the A/M32A-60.

The basic units of a hydraulic hand pump system include a reservoir, pump, actuator, and manual shutoff valve. The reservoir stores the hydraulic fluid, the pump pressurizes the fluid, the actuator converts the fluid pressure into mechanical force, and the manual shutoff valve allows for control over the flow of fluid. This combination of components allows for the operation of a hydraulic hand pump system.

The spring aids piston closure and prevents fuel from entering the tank in a piston-type fuel level control valve. The spring provides the necessary force to push the piston back into a closed position, creating a seal and preventing fuel from flowing into the tank. Without the spring, the piston would remain open, allowing fuel to enter the tank unrestricted.

The C-10 air conditioner is capable of delivering conditioned air in a range from 47 to 200 degrees F. This means that the air conditioner can provide air at temperatures as low as 47 degrees Fahrenheit and as high as 200 degrees Fahrenheit. This wide range of temperature control allows for flexibility in meeting different cooling or heating needs in various environments.

The low-level shutoff valve prevents the reverse flow of fuel through the valve by using a check valve. A check valve is a type of valve that allows fluid to flow in one direction but prevents it from flowing back in the opposite direction. In this case, the check valve ensures that fuel can only flow in the desired direction and prevents any reverse flow, ensuring the proper functioning and safety of the system.

A pressure-loaded fuel system check valve is used when gravity flow through the valve is undesirable. This means that the valve is designed to prevent fuel from flowing freely in the opposite direction due to gravity. This is important in situations where fuel needs to be regulated and controlled, such as in a fuel system where gravity flow could lead to excessive or uncontrolled fuel flow. By using a pressure-loaded check valve, the fuel flow can be regulated and prevented from flowing backwards due to gravity.

The secondary seal sleeve is the rotary plug valve part that rotates and seals off the passage of fuel during plug valve removal. This sleeve acts as a secondary barrier to prevent any leakage or flow of fuel when the valve is being removed. It ensures that the fuel is completely sealed off, providing safety and preventing any potential hazards during maintenance or replacement of the plug valve.

The leak limits correspond to the leak category and fuel type. This means that different types of fuels will have different limits for leaks, and the category of the leak (such as minor, major, or critical) will also determine the acceptable limits. The combination of these two factors helps in determining the appropriate actions to be taken in case of a leak, ensuring that the response is tailored to the specific fuel type and severity of the leak.

The usable pressure range of the MC-1A air compressor is 0 to 3,200 psi. This means that the compressor can operate within this pressure range without any issues. Pressure ranges outside of this range may cause damage to the compressor or result in inefficient performance. Therefore, 3,200 psi is the correct answer as it falls within the usable pressure range of the MC-1A air compressor.

The correct answer is "servo valve controls fluid-flow." This means that a servo valve is specifically designed to regulate the flow of fluid, while a selector valve may not have this capability. The other options provided in the question, such as the number of ports or complexity, do not directly address the main difference between the two valves.

The MC-2A air compressor is capable of delivering air at a maximum pressure of 200 psi. This means that the compressor can generate a maximum air pressure of 200 pounds per square inch. This level of pressure is suitable for many applications, such as inflating tires, powering pneumatic tools, and operating air-powered machinery. It is important to note that exceeding the maximum pressure rating of the compressor can lead to equipment damage or failure, so it is essential to operate within the specified limits.

When automatic data systems are not available to document fuel leaks, the form that must be used is AFTO Form 427. This form is specifically designed for documenting fuel leaks and is an alternative to the AFTO Form 781A or AFTO Form 781K. It allows for the proper recording and tracking of fuel leaks in the absence of automatic data systems.

The rotor is the component in an air refueling pump that removes fuel vapors caused by the centrifugal force of the impellers. The impellers spin rapidly, creating a centrifugal force that pushes the fuel towards the outer edges of the pump. The rotor is designed to collect and remove any fuel vapors that are generated during this process, ensuring that only liquid fuel is delivered. The stator, accumulator, and vapor relief valve do not have this specific function in removing fuel vapors caused by the centrifugal force of the impellers.

The correct answer is sliding gate, rotary plug, and disc. This means that the three types of shutoff valves used in the crossfeed fuel system are the sliding gate valve, the rotary plug valve, and the disc valve. These valves are commonly used in fuel systems to control the flow of fuel and prevent leaks or accidents. Each type of valve has its own unique design and operation method, but all serve the same purpose of regulating the fuel flow.

Spring-loaded relief valves are fuel system components that prevent excessive pressure from building up in trapped lines or within the valve body. These valves are designed to open when the pressure exceeds a certain threshold, allowing the excess pressure to be released and preventing damage to the fuel system. Unlike thermal-relief valves, pressure-relief valves, and one-way check valves, spring-loaded relief valves use a spring mechanism to control the pressure and ensure the safe operation of the fuel system.

The MB-4 Eagle tow vehicle utilizes an electrical steering system that allows for various steering modes. This system enables two-wheel steer, where only the front or rear wheels are steered, four-wheel coordinated steer, where all wheels move together in the same direction, and four-wheel oblique steer, where the wheels move independently to achieve a desired angle. The electrical steering system provides the necessary control and flexibility to achieve these different steering modes efficiently.

The correct answer is hydromechanical and air pressure. These are the two methods of transferring fuel mentioned in the given options. Gravity flow and pump are not mentioned, so they are not included in the correct answer.