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

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  • 1/50 Questions

    (215) The best way to determine if a cable has broken wires is to

    • Cut the cable an inspect for damage.
    • Run a cloth along the lenght of the cable.
    • Run your hand along the length of the cable.
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Hydraulics Quizzes & Trivia
About This Quiz

A hydraulics journey man in the air force is charged with ensuring that all the hydraulic systems are working effectively without fail. They are charged with confirming landing gear and weapons are in top shape. Take the second set of questions for reviewing volume two below to refresh your brain. All the best.

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  • 2. 

    (216) Backup rings are not necessary in a hydraulic system when the operating pressure is less than

    • 1500 psi.

    • 1600 psi.

    • 2000 psi

    Correct Answer
    A. 1500 psi.
    Explanation
    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.

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  • 3. 

    (215) MS flareless fittings are designed primarily for use

    • In carge-type aircraft.

    • As a replacement for the old AAF tube fitting.

    • In high pressure system that are subjected to severe vibrations.

    Correct Answer
    A. In high pressure system that are subjected to severe vibrations.
    Explanation
    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.

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  • 4. 

    (215) What are the two general groups of aircraft nuts?

    • Shear and the two general groups of aircraft nuts?

    • Shear castellated

    • Nonself-locking and self-locking

    Correct Answer
    A. Nonself-locking and self-locking
    Explanation
    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.

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  • 5. 

    (218) What type of cleaning solvent should be used on common parts removed from the nosewheel streering system?

    • PD-680

    • Trichloroethane

    • Only the solvent prescribed in the appropriate technical order

    Correct Answer
    A. Only the solvent prescribed in the appropriate technical order
    Explanation
    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.

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  • 6. 

    (223)  To check resistance, you should place the digital multimeter function selector rotary switch to

    • Ohms

    • AC voltage

    • DC voltage

    Correct Answer
    A. Ohms
    Explanation
    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.

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  • 7. 

    (218) When is it premissible to heat a lubricant?

    • Never.

    • When using a high vescosity lubricant.

    • Only in northern tier bases.

    Correct Answer
    A. Never.
    Explanation
    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.

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  • 8. 

    (213) How many times should you cycle a torque wrench throught its breakaway torque before use?

    • Once

    • Three

    • Six

    Correct Answer
    A. Six
    Explanation
    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.

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  • 9. 

    (225) When using the skiving section of the hose cutting and skiving machine, how can you tell that the hose has been skived properly?

    • The wire braid looks burnt.

    • All rubber has been removed.

    • The wire braid appears bright, but the wires are not distrubed.

    Correct Answer
    A. The wire braid appears bright, but the wires are not distrubed.
    Explanation
    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.

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  • 10. 

    (229) One hazard associated with the MJ-2A hydraulic test stand that is not prevealent in other piece of aerospace ground equipment is the

    • High speed of operation.

    • Possiblity of a high-pressure line rupturing.

    • Electrical shock associated with the unit.

    Correct Answer
    A. Possiblity of a high-pressure line rupturing.
    Explanation
    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.

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  • 11. 

    (222) What is the amperage of a series circuit having 24 volts applied voltage through a total resistance of 6 ohms?

    • 2 amperes

    • 4 amperes

    • 6 amperes

    Correct Answer
    A. 4 amperes
    Explanation
    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).

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  • 12. 

    (227) The Avitech test stand two-stage flowmeter is calibrated for use with

    • MIL-H-5606 only

    • MIL-H-5606, and MIL-H-6083

    • MIL-H-5606, MIL-H-83282 and MIL-H-6083

    Correct Answer
    A. MIL-H-5606, MIL-H-83282 and MIL-H-6083
    Explanation
    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.

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  • 13. 

    (219) Why are P-D-680 types I and ll being replaced wiht P-D-680 type lll ?

    • Type ll cleans better

    • Types l and ll are toxics

    • Types lll has a higher flashpoint

    Correct Answer
    A. Types lll has a higher flashpoint
    Explanation
    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.

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  • 14. 

    (225) The oil-fog lubricator on the hose cutting machine is serviced with

    • MIL-H-5606.

    • SAE-10 weight motor oil.

    • SAE-30 weight motor oil.

    Correct Answer
    A. SAE-10 weight motor oil.
    Explanation
    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.

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  • 15. 

    (225) When using the skiving machine, the length of skive is determined by the

    • Length of the hose.

    • Diameter of the hose

    • Shoulders on the mandrels

    Correct Answer
    A. Shoulders on the mandrels
    Explanation
    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.

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  • 16. 

    (226) The three positions of the control switch on the clutch control box of the hose assembly machine are

    • RUN, ON, and JOG

    • RUN, OFF, and JOG

    • FORWARD, REVERSE, and OFF

    Correct Answer
    A. RUN, OFF, and JOG
    Explanation
    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.

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  • 17. 

    (227) On the Avitech test stand, the hydraulic fluid heater automatically shuts off when the fluid reaches

    • 100 degrees F

    • 160 degrees F

    • 180 degrees F

    Correct Answer
    A. 180 degrees F
    Explanation
    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.

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  • 18. 

    (223) An ohmeter indicates an open circuit when it reads

    • Zero.

    • Open.

    • Infinity.

    Correct Answer
    A. Infinity.
    Explanation
    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.

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  • 19. 

    (228) The Avitech test stand's air pump lubricator is serviced with

    • Nitrogen.

    • SAE-10 oil.

    • SAE-30 oil.

    Correct Answer
    A. SAE-10 oil.
    Explanation
    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.

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  • 20. 

    (220) Room temperature volcanized sealants are

    • The curiing-type.

    • The rubber-type.

    • Silicone based.

    Correct Answer
    A. Silicone based.
    Explanation
    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.

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  • 21. 

    (215) The grip length of a bolt is the

    • Bolt shank.

    • Unthreaded area.

    • Head bearing area.

    Correct Answer
    A. Unthreaded area.
    Explanation
    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.

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  • 22. 

    (218) in addition to a light film of hydraulic fluid, what can be used to lubricate a hydraulic seal?

    • V V-P 236

    • MIL--G-4343

    • MIL--H5606

    Correct Answer
    A. V V-P 236
    Explanation
    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.

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  • 23. 

    (222)  Before using an ohmmeter, you must

    • Apply power to the circuit.

    • Remove the power from the circuit.

    • Set it to the proper DC range.

    Correct Answer
    A. Remove the power from the circuit.
    Explanation
    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.

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  • 24. 

    (227) At what pressure will the pressure system boost switch shut down the Avitech stand high-pressure pump motor?

    • 100 psig

    • 40 +/ - 10 psig

    • 70+/- 10psig

    Correct Answer
    A. 70+/- 10psig
    Explanation
    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.

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  • 25. 

    (230) While starting the MC-A1, the engine oil pressure does not register on the gauge within 5 seconds.  In this situation you would,

    • Disengage the clutch.

    • Change out the faulty gauge

    • Push throttle in and turn off the master switch.

    Correct Answer
    A. Push throttle in and turn off the master switch.
    Explanation
    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.

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  • 26. 

    (214) What minimum clearance should be maintained when clamping tubing to a rigid structure?

    • 1/16 inch

    • 1/4 inch

    • 1/2 inch

    Correct Answer
    A. 1/16 inch
    Explanation
    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.

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  • 27. 

    (217) What should be done with unused hydraulic fluid from containers that are opened for thrust cleaning?

    • Dispose of it as waste.

    • Transfer it to the hydraulic servicing cart.

    • Transfer it to a properly marked plastic pump-handle bottle.

    Correct Answer
    A. Transfer it to a properly marked plastic pump-handle bottle.
    Explanation
    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.

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  • 28. 

    (225) If the drive motor on the hose cutting and skiving machine exceeds full-load current, the thermal

    • Reset switch will protect the motor.

    • Overload relay will protect the motor.

    • Overload valve will protect the motor.

    Correct Answer
    A. Overload relay will protect the motor.
    Explanation
    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.

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  • 29. 

    (213) After the A/M32A-60 generator set has reached 95 of governed speed, you should

    • Reset the AC system.

    • Connect the power cables.

    • Disconnect the power cables.

    Correct Answer
    A. Reset the AC system.
    Explanation
    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.

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  • 30. 

    (219) What abrasive paper can be used to clean most surfaces?

    • Emery cloth

    • Aluminum oxide paper

    • Silicone carbide paper

    Correct Answer
    A. Aluminum oxide paper
    Explanation
    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.

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  • 31. 

    (221) The intensity of current is measured in

    • Volt.

    • Amperes.

    • Cycles.

    Correct Answer
    A. Amperes.
    Explanation
    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.

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  • 32. 

    (232) You have pumped a B-5 stand up to the desired height, what should you do next

    • Install the locks.

    • Close the vent plugs.

    • Store the handpump handle.

    Correct Answer
    A. Close the vent plugs.
    Explanation
    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.

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  • 33. 

    (220) A curing sealant's work life can be determined by the

    • Setting time.

    • Class of sealant used.

    • Dash number in the part number.

    Correct Answer
    A. Dash number in the part number.
    Explanation
    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.

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  • 34. 

    (224)  To change an analog multimeter's range or function switch without removing the test loads from the circuit you should

    • Depress the "push to open and rest" control.

    • Remove all power from the aircraft or component.

    • Make sure aircraft or component is grounded properly

    Correct Answer
    A. Depress the "push to open and rest" control.
    Explanation
    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.

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  • 35. 

    (213) Which position on the A/M 32A-86 generator meter selector is normally used?

    • PHASE A

    • PHASE B

    • PHASE C

    Correct Answer
    A. PHASE A
    Explanation
    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.

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  • 36. 

    (221)  What do you call a substance which has tightly bound orbiting electrons?

    • An Atom.

    • A molecule

    • An insulator

    Correct Answer
    A. An insulator
    Explanation
    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.

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  • 37. 

    (234) You are using Plumb bob to level a large aircraft prior to jacking. How far should the plumb bob free hand to obtain an accurate reading?

    • 2.5 feet

    • 3.0 feet

    • 4.0 feet

    Correct Answer
    A. 3.0 feet
    Explanation
    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.

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  • 38. 

    (221) The pressure that force free electrons through a conductor is called the electromotive force or the

    • Voltage.

    • Amperage.

    • Resistance.

    Correct Answer
    A. Voltage.
    Explanation
    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.

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  • 39. 

    (232) on the B-1 stand, the lock assembly rotates around the

    • Outer pistons.

    • Cylinder piston rod sleeve.

    • Cylinder barrel assembly.

    Correct Answer
    A. Cylinder piston rod sleeve.
    Explanation
    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.

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  • 40. 

    (232) Which maintence stand uses four adjustable screw-type pads for leveling

    • B-1

    • B-2

    • B-5

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

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  • 41. 

    (226) You have the brake applied and the hose assembly machine in the forward running position. If a medium pressure nipple and nut assembly bottoms on the mandrel, the

    • Machine will be damage.

    • Fittings will be damaged

    • Overriding head will start to turn.

    Correct Answer
    A. Overriding head will start to turn.
    Explanation
    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.

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  • 42. 

    (215) When resealing a Rosan fitting, what is the purpose of the bullet?

    • Aligns the serration's

    • Protects the seal

    • Positions the sleeves

    Correct Answer
    A. Protects the seal
    Explanation
    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.

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  • 43. 

    (227) What is used to indicate clogging of the Avitech test stand high-presssure system filter?

    • A sight tube

    • Pilot light assembly

    • Slow system operation

    Correct Answer
    A. Pilot light assembly
    Explanation
    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.

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  • 44. 

    (215) Antiseize thread compound is used on

    • AN fittings

    • Pipe fitings

    • Rosan fittings

    Correct Answer
    A. Pipe fitings
    Explanation
    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.

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  • 45. 

    (215) The purpose of the small hole near the end of a control rod is to

    • Vent moisture.

    • Check the lock nut..

    • Check thread engagement.

    Correct Answer
    A. Check thread engagement.
    Explanation
    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.

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  • 46. 

    (223) How is an ohmmeter connected in a circuit?

    • Series

    • Parallel

    • Series and parallel

    Correct Answer
    A. Parallel
    Explanation
    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.

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  • 47. 

    (233) What form is used to find the basic information to compute an aircraft's center of gravity (CG)?

    • SF form 71

    • AF form 979

    • DD form 0-365-3

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

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  • 48. 

    (234) You are using the hydraulic pumping unit to downjack an aircraft.  What will you use to control the aircraft rate of descent?

    • The adjustment of the control valves on the control panel.

    • Flow control valves at the end of the hoses.

    • The amount the release valve are opened.

    Correct Answer
    A. Flow control valves at the end of the hoses.
    Explanation
    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.

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  • 49. 

    (229) 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.

    • Boost pump outlet pressure.

    • Filter differential pressure.

    Correct Answer
    A. Filter outlet pressure.
    Explanation
    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.

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Quiz Review Timeline (Updated): Mar 22, 2023 +

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 14, 2012
    Quiz Created by
    Fernandoben

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