2A656 Vol 2 Ure (2013)

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2A656 Vol 2 Ure (2013) - Quiz

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Questions and Answers
  • 1. 

    (201) Screwdrivers are sized by the length of theType question here

    • A.

      Blade.

    • B.

      Shank.

    • C.

      Handle.

    • D.

      Ferrule.

    Correct Answer
    B. Shank.
    Explanation
    Screwdrivers are sized by the length of the shank. The shank refers to the cylindrical part of the screwdriver that fits into the handle and holds the blade. The length of the shank determines the reach and the depth that the screwdriver can reach into a screw or a hole. Therefore, the shank length is an important factor in determining the size and functionality of a screwdriver.

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  • 2. 

    (201) A properly ground tip on a standard screwdriver

    • A.

      Fits loosely in the screw slot.

    • B.

      Is wider than the slot.

    • C.

      Is rounded and flat.

    • D.

      Is square and flat.

    Correct Answer
    D. Is square and flat.
    Explanation
    A properly ground tip on a standard screwdriver is square and flat because this shape allows for maximum contact with the screw slot, ensuring a secure grip and minimizing the risk of slipping or stripping the screw. A square and flat tip also provides better torque transfer, making it easier to turn the screw and apply the necessary force.

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  • 3. 

    (201) One of the most important things to remember when using a hammer or any other hand tool is to use a

    • A.

      Substitute tool if it will save time and movement.

    • B.

      Tool of the right composition or material.

    • C.

      Tool only for its correct purpose.

    • D.

      Tool one size larger than needed.

    Correct Answer
    C. Tool only for its correct purpose.
    Explanation
    When using a hammer or any other hand tool, it is crucial to use the tool only for its correct purpose. This means using the tool in the way it was designed and intended to be used. Using a tool for a different purpose can result in inefficiency, potential damage to the tool or the object being worked on, and even personal injury. Therefore, it is important to always use the right tool for the job to ensure safety and effectiveness.

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  • 4. 

    (201) What kind of pliers are mainly for holding or bending flat or round stock?

    • A.

      Vise grip.

    • B.

      Long-nose.

    • C.

      Multiple slip-joint.

    • D.

      Combination slip-joint.

    Correct Answer
    D. Combination slip-joint.
    Explanation
    Combination slip-joint pliers are mainly used for holding or bending flat or round stock. They have a versatile design with jaws that can be adjusted to different widths, allowing them to grip various sizes of stock securely. This makes them suitable for a wide range of tasks, such as holding or bending wires, rods, or pipes. The other options, vise grip, long-nose, and multiple slip-joint pliers, may have their own specific uses but are not primarily designed for holding or bending flat or round stock.

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  • 5. 

    (201) One advantage of box-end wrenches is that they

    • A.

      Are the fastest to use.

    • B.

      Can be hammered on safely.

    • C.

      Are not likely to slip off a nut.

    • D.

      Are easy to use on recessed bolts.

    Correct Answer
    C. Are not likely to slip off a nut.
    Explanation
    Box-end wrenches have a closed-loop design that provides a secure fit around the nut. This design reduces the likelihood of the wrench slipping off the nut during use, making them a reliable tool for tightening or loosening nuts.

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  • 6. 

    (201) Thickness gauges of various sizes are normally used to measure the

    • A.

      Depth of a hole.

    • B.

      Thread size of a bolt.

    • C.

      Outside diameter of a tube.

    • D.

      Clearance between two objects.

    Correct Answer
    D. Clearance between two objects.
    Explanation
    Thickness gauges are typically used to measure the clearance between two objects. These gauges come in various sizes and are specifically designed to determine the space or gap between two surfaces. They are not used to measure the depth of a hole, the thread size of a bolt, or the outside diameter of a tube. Therefore, the correct answer is clearance between two objects.

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  • 7. 

    (202) Before storing a torque wrench you have used, you should

    • A.

      Lubricate it with a light oil.

    • B.

      Set it at its lowest setting.

    • C.

      Check it for accuracy.

    • D.

      Set it at zero setting.

    Correct Answer
    B. Set it at its lowest setting.
    Explanation
    Before storing a torque wrench that has been used, it is recommended to set it at its lowest setting. This is important because leaving the torque wrench set at a high setting can cause the internal spring to become compressed and lose its calibration over time. By setting it at the lowest setting, the spring is relaxed and the torque wrench is less likely to lose its accuracy when not in use. It is also a good practice to lubricate the torque wrench with a light oil to prevent rust and ensure smooth operation. Checking the torque wrench for accuracy is also important, but it is not specifically mentioned in the question. Setting it at zero setting is not necessary before storing it.

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  • 8. 

    (203) Tubing used in aircraft oxygen, fuel, lubrication, fire extinguishing, instruments, hydraulic, and vent lines is

    • A.

      Stainless steel and Teflon alloy.

    • B.

      Stainless steel and copper tubing.

    • C.

      Aluminum alloy and copper tubing.

    • D.

      Aluminum alloy and stainless steel.

    Correct Answer
    D. Aluminum alloy and stainless steel.
    Explanation
    The tubing used in aircraft for various purposes such as oxygen, fuel, lubrication, fire extinguishing, instruments, hydraulic, and vent lines is made of aluminum alloy and stainless steel. These materials are chosen for their specific properties and suitability for their respective applications. Aluminum alloy is lightweight and has good corrosion resistance, making it ideal for applications where weight is a concern. Stainless steel, on the other hand, is known for its high strength and excellent resistance to corrosion, making it suitable for applications where durability and resistance to harsh environments are required.

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  • 9. 

    (203) You can identify a fitting that has pipe threads by its

    • A.

      Color

    • B.

      Taper

    • C.

      Length

    • D.

      Inside diameter

    Correct Answer
    B. Taper
    Explanation
    A fitting that has pipe threads can be identified by its taper. Pipe threads have a tapered shape, meaning that the diameter of the threads gradually decreases towards the end. This taper allows the fitting to create a tight seal when screwed into another fitting or pipe with matching threads. By recognizing the taper on the fitting, one can determine that it is designed for use with pipe threads.

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  • 10. 

    (203) When torquing a bolt assembly, what is the force applied to overcome friction?

    • A.

      Torsion.

    • B.

      Tension.

    • C.

      Tensile.

    • D.

      Shear.

    Correct Answer
    A. Torsion.
    Explanation
    When torquing a bolt assembly, the force applied to overcome friction is called torsion. Torsion refers to the twisting or rotational force applied to an object, in this case, the bolt assembly, to overcome the friction between its components. Torsion is commonly used in fastening applications, where the twisting force helps tighten the bolt and secure the components together.

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  • 11. 

    (204) When installing a cotter pin, ensure the prong that bends over the bolt shank does not exceed the bolt nut

    • A.

      Grip

    • B.

      Width

    • C.

      Length

    • D.

      Diameter

    Correct Answer
    D. Diameter
    Explanation
    When installing a cotter pin, it is important to ensure that the prong that bends over the bolt shank does not exceed the bolt diameter. This is because the diameter of the bolt determines the size of the hole through which the cotter pin is inserted. If the prong of the cotter pin exceeds the bolt diameter, it may not fit properly and could potentially cause the pin to become loose or ineffective in securing the bolt. Therefore, it is crucial to match the cotter pin size with the bolt diameter to ensure proper installation and secure fastening.

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  • 12. 

    (204) A good rule to follow in using safety wire is

    • A.

      Never use the single-wire method.

    • B.

      Loop it so that it opposes the loosening of the part.

    • C.

      The diameter of the wire should fill one-half the hole.

    • D.

      Use safety wire electrical connectors only in cockpit areas.

    Correct Answer
    B. Loop it so that it opposes the loosening of the part.
    Explanation
    A good rule to follow in using safety wire is to loop it so that it opposes the loosening of the part. This means that the wire should be twisted in a way that it tightens and secures the part, preventing it from coming loose. This technique ensures that the safety wire effectively serves its purpose of keeping the part in place and maintaining safety.

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  • 13. 

    (205) Wire insulation may consist of several layers of nonconducting material that provides

    • A.

      Thermal protection and fluid resistance.

    • B.

      A method of identification.

    • C.

      Protection from freezing.

    • D.

      Strength and flexibility.

    Correct Answer
    A. Thermal protection and fluid resistance.
    Explanation
    Wire insulation may consist of several layers of nonconducting material that provides thermal protection and fluid resistance. This means that the insulation helps to prevent the wire from overheating and also protects it from any fluids it may come into contact with. The multiple layers of nonconducting material provide an extra barrier of protection, ensuring that the wire remains safe and functional.

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  • 14. 

    (205) Which technical order (TO) provides instructions for the Brady Wire Marking System?

    • A.

      00–20–1.

    • B.

      00–20–2.

    • C.

      1–1A–8.

    • D.

      1–1A–14.

    Correct Answer
    D. 1–1A–14.
    Explanation
    The correct answer is 1-1A-14. This technical order (TO) provides instructions for the Brady Wire Marking System.

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  • 15. 

    (205) Wires and wire bundles should be supported by clamps or grommets at intervals of no more than

    • A.

      15 inches.

    • B.

      20 inches.

    • C.

      24 inches.

    • D.

      26 inches.

    Correct Answer
    C. 24 inches.
    Explanation
    Wires and wire bundles should be supported by clamps or grommets at intervals of no more than 24 inches. This is important to prevent the wires from sagging or becoming loose, which could lead to potential damage or hazards. By providing support at regular intervals, the wires are kept secure and properly organized, ensuring efficient and safe operation.

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  • 16. 

    (205) All wire groups or bundles must be tied when supports are more than

    • A.

      6 inches apart.

    • B.

      8 inches apart.

    • C.

      10 inches apart.

    • D.

      12 inches apart.

    Correct Answer
    D. 12 inches apart.
    Explanation
    When wire supports are more than 12 inches apart, it is necessary to tie all wire groups or bundles together. This is because without tying them, the wires may sag or become loose, which can lead to potential hazards such as electrical shorts or damage to the wires. By tying the wire groups or bundles, they are held securely in place and maintain proper alignment and tension, ensuring the safety and functionality of the wiring system.

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  • 17. 

    (205) Avoid using self-clinching tie straps where temperatures exceed

    • A.

      185 deg F.

    • B.

      165 deg F

    • C.

      150 deg F.

    • D.

      100 deg F

    Correct Answer
    A. 185 deg F.
    Explanation
    The correct answer is 185 deg F. Self-clinching tie straps should not be used in temperatures exceeding 185 deg F. This is because these tie straps are designed to withstand certain temperature limits, and temperatures beyond this limit may cause the material to weaken or fail. Therefore, it is important to consider the temperature requirements when selecting and using self-clinching tie straps to ensure their effectiveness and reliability.

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  • 18. 

    (206) How many nicked or broken wire strands are allowed on 16-gauge aluminum wire?

    • A.

      One

    • B.

      Two

    • C.

      Three

    • D.

      None

    Correct Answer
    D. None
    Explanation
    There are no nicked or broken wire strands allowed on 16-gauge aluminum wire. This is because any damage to the wire strands can weaken the overall structure of the wire and compromise its conductivity and safety. Therefore, it is important to ensure that the wire is free from any damage or defects for optimal performance.

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  • 19. 

    (206) The indent-type crimping tool should be used only on

    • A.

      Preinsulated splices.

    • B.

      Preinsulated terminals.

    • C.

      Noninsulated terminals.

    • D.

      Noninsulated terminal boards.

    Correct Answer
    C. Noninsulated terminals.
    Explanation
    The indent-type crimping tool should be used only on noninsulated terminals. This is because the tool is specifically designed to create a secure and reliable connection between the wire and the terminal. Noninsulated terminals do not have any protective covering or insulation, so using the indent-type crimping tool ensures that the connection is properly made without damaging the terminal or causing any electrical issues. On the other hand, preinsulated splices and terminals already have insulation, so using the indent-type crimping tool may damage the insulation or result in an unreliable connection.

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  • 20. 

    (206) What do you use as junction points for circuits that are frequently disconnected?

    • A.

      Connector plugs.

    • B.

      Terminal boards

    • C.

      Shielded wires.

    • D.

      Splices

    Correct Answer
    A. Connector plugs.
    Explanation
    Connector plugs are used as junction points for circuits that are frequently disconnected because they provide a secure and reliable connection that can be easily disconnected and reconnected without causing damage to the wires or components. Terminal boards are more suitable for permanent connections, shielded wires are used for reducing electromagnetic interference, and splices are used for joining two or more wires together permanently. Therefore, connector plugs are the most appropriate choice for circuits that require frequent disconnection.

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  • 21. 

    (206) What ensures a connector plug and receptacle are not mismated?

    • A.

      Bulkhead receptacle.

    • B.

      Threaded coupling ring.

    • C.

      Pin and socket connection.

    • D.

      Key-and-key way arrangement.

    Correct Answer
    D. Key-and-key way arrangement.
    Explanation
    A key-and-key way arrangement ensures that a connector plug and receptacle are not mismated. This arrangement involves the use of a key, which is a small metal piece that fits into a corresponding key way or slot on the plug and receptacle. The key and key way are uniquely shaped, preventing the plug from being inserted into the wrong receptacle or vice versa. This helps to ensure that the correct connections are made and prevents any potential damage or malfunction that could occur from a mismatched connection.

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  • 22. 

    (207) When heat is applied to thermofit material, which is used in compact wire bundles, it will shrink by at least

    • A.

      One and a half times its original diameter.

    • B.

      One-fourth its original diameter.

    • C.

      One-half its original diameter.

    • D.

      One time its original diameter.

    Correct Answer
    C. One-half its original diameter.
    Explanation
    When heat is applied to thermofit material, it will shrink by one-half its original diameter. This means that the material will reduce in size by 50% of its original diameter when exposed to heat.

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  • 23. 

    (207) The electrical magnetic pulse (EMP)-hardened cable provides a barrier to

    • A.

      Electrical grounding.

    • B.

      Electrical continuity.

    • C.

      Electrical current flow.

    • D.

      Electrostatic interference

    Correct Answer
    D. Electrostatic interference
    Explanation
    The electrical magnetic pulse (EMP)-hardened cable is designed to protect against electrostatic interference. Electrostatic interference refers to the disturbance caused by static electricity, which can interfere with the proper functioning of electronic devices. By providing a barrier to electrostatic interference, the EMP-hardened cable ensures that the electrical signals transmitted through it are not affected by static electricity, thus maintaining the integrity of the electrical system.

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  • 24. 

    (208) After a bonding or grounding jumper is installed, it should read no more than

    • A.

      0.02 ohms.

    • B.

      0.01 ohms.

    • C.

      0.2 ohms.

    • D.

      0.1 ohms.

    Correct Answer
    D. 0.1 ohms.
    Explanation
    After a bonding or grounding jumper is installed, it should read no more than 0.1 ohms. This is because a bonding or grounding jumper is used to establish an electrical connection between two metal objects to prevent the buildup of static electricity or the occurrence of electrical faults. A low resistance reading indicates that the jumper is effectively conducting electricity and providing a path for electrical currents to flow, ensuring proper grounding and bonding. A reading of 0.1 ohms or lower is considered acceptable in most cases.

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  • 25. 

    (209) Which type of solder is preferred for printed circuit boards?

    • A.

      40/60.

    • B.

      60/40

    • C.

      63/37

    • D.

      64/36

    Correct Answer
    C. 63/37
    Explanation
    The preferred type of solder for printed circuit boards is 63/37. This solder alloy is composed of 63% tin and 37% lead. It is commonly used in electronics manufacturing because it has a lower melting point compared to other solder alloys, making it easier to work with. Additionally, the 63/37 solder provides good wetting and flow properties, ensuring reliable and strong connections between the components and the circuit board.

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  • 26. 

    (209) Oxide film is removed from the surface of metals during the soldering process by the use of

    • A.

      A bristle brush.

    • B.

      The soldering flux.

    • C.

      A soldering iron tip.

    • D.

      An approved solvent

    Correct Answer
    B. The soldering flux.
    Explanation
    During the soldering process, oxide films can form on the surface of metals, which can prevent proper adhesion of the solder. To remove these oxide films, a soldering flux is used. The flux helps to clean the metal surface by reacting with the oxide layer and dissolving it. This allows the solder to flow and bond effectively with the metal, ensuring a strong and reliable connection. Therefore, the soldering flux is the correct answer for removing oxide films from the surface of metals during soldering.

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  • 27. 

    (210) In order to shape a soldering iron’s copper tip, use a

    • A.

      Fine file while the tip is cold.

    • B.

      Fine file while the tip is hot.

    • C.

      Coarse file while the tip is cold.

    • D.

      Coarse file while the tip is hot.

    Correct Answer
    A. Fine file while the tip is cold.
    Explanation
    Using a fine file while the tip of a soldering iron is cold is the correct answer because a fine file is used to remove small amounts of material and create a smooth surface. When the tip is cold, it is easier to shape and file without the risk of burning oneself or damaging the soldering iron. Using a coarse file while the tip is hot can cause the tip to become uneven or damaged.

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  • 28. 

    (210) In order to clean a plated soldering tip, use

    • A.

      A fine file while the tip is cold.

    • B.

      A coarse file while the tip is hot.

    • C.

      An abrasive cloth while the tip is hot.

    • D.

      An abrasive cloth while the tip is cold.

    Correct Answer
    D. An abrasive cloth while the tip is cold.
  • 29. 

    (211) Prior to soldering electronic equipment, ensure the equipment is

    • A.

      Disconnected from the power source.

    • B.

      Connected to the power source.

    • C.

      Protected from voltage spikes.

    • D.

      Properly grounded.

    Correct Answer
    A. Disconnected from the power source.
    Explanation
    The correct answer is "disconnected from the power source." Prior to soldering electronic equipment, it is important to disconnect the equipment from the power source to prevent any electrical accidents or damage to the equipment. This ensures the safety of the person performing the soldering and also protects the equipment from any power surges or voltage spikes that may occur during the soldering process. Properly disconnecting the equipment from the power source is a standard safety precaution in electronics work.

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  • 30. 

    (211) How should you test the heat of a soldering iron?

    • A.

      Submerge the tip in flux.

    • B.

      Hold the tip near your face.

    • C.

      Touch the tip to the solder, near your body.

    • D.

      Touch the tip to the solder, away from your body.

    Correct Answer
    D. Touch the tip to the solder, away from your body.
    Explanation
    To test the heat of a soldering iron, you should touch the tip to the solder, away from your body. This is the correct answer because it ensures safety by keeping the hot tip away from your body, reducing the risk of burns or accidents. By touching the tip to the solder, you can also gauge the temperature and readiness of the iron for soldering tasks.

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  • 31. 

    (212) The minimum insulation clearance is how many times the wire diameter?

    • A.

      One

    • B.

      Two

    • C.

      Three

    • D.

      Four

    Correct Answer
    A. One
    Explanation
    The minimum insulation clearance being one times the wire diameter means that the distance between the wire and any surrounding insulation should be equal to the diameter of the wire itself. This ensures that there is enough space for the wire to function properly without any interference or risk of electrical short circuits.

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  • 32. 

    (212) An acceptable tinned wire has

    • A.

      No insulation clearance and wire strands covered with solder, but still visible.

    • B.

      No insulation clearance and wire strands covered with solder, but not visible.

    • C.

      An insulation clearance equal to the diameter of the wire and wire strands covered with solder, but still visible.

    • D.

      An insulation clearance equal to the diameter of the wire and wire strands partially covered with solder, and still visible.

    Correct Answer
    C. An insulation clearance equal to the diameter of the wire and wire strands covered with solder, but still visible.
    Explanation
    An acceptable tinned wire has an insulation clearance equal to the diameter of the wire, meaning that there is no insulation covering the wire strands. The wire strands are covered with solder, but they are still visible. This means that the solder provides a protective coating for the wire strands, but does not completely cover them, allowing for visibility.

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  • 33. 

    (213) After soldering, remove traces of flux with a

    • A.

      Typewriter eraser and approved abrasive compound.

    • B.

      Rubber wheel and approved abrasive compound.

    • C.

      Medium-stiff brush and approved solvent.

    • D.

      Sharp knife and approved solvent.

    Correct Answer
    C. Medium-stiff brush and approved solvent.
    Explanation
    After soldering, it is important to remove traces of flux, which is a material used to clean and prepare surfaces for soldering. A medium-stiff brush is commonly used to scrub away the flux residue, as it can effectively remove the flux without causing damage to the soldered components. An approved solvent is also necessary to help dissolve the flux and aid in its removal. Therefore, using a medium-stiff brush and an approved solvent is the correct method for removing traces of flux after soldering.

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  • 34. 

    (214) When making wire connections to turret terminals, wrap the wire around the terminal at least

    • A.

      90 deg

    • B.

      180 deg

    • C.

      270 deg

    • D.

      360 deg

    Correct Answer
    B. 180 deg
    Explanation
    When making wire connections to turret terminals, it is necessary to wrap the wire around the terminal at least 180 degrees. This ensures a secure and reliable connection between the wire and the terminal, minimizing the risk of the wire coming loose or losing electrical conductivity. Wrapping the wire around the terminal at this angle creates a tight and firm grip, ensuring that the connection remains intact even under vibrations or other external forces.

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  • 35. 

    (214) Prior to soldering a turret terminal what must you do?

    • A.

      Ensure the wire enters the terminal at an angle.

    • B.

      Wrap the wire around the terminal at least 180°, but no more than 270°.

    • C.

      Make sure the wire rests loosely against the base in the lower guide slot.

    • D.

      Make sure the wire rests loosely against the shoulder in the upper guide slot.

    Correct Answer
    B. Wrap the wire around the terminal at least 180°, but no more than 270°.
    Explanation
    To ensure a secure and reliable connection, it is necessary to wrap the wire around the terminal at least 180°, but no more than 270°. This allows for proper contact between the wire and the terminal, ensuring a good electrical connection. Wrapping the wire too loosely or tightly can lead to a weak connection or damage to the wire or terminal. Therefore, it is important to follow this procedure prior to soldering a turret terminal.

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  • 36. 

    (213) Which choice best describes a good solder connection?

    • A.

      A dull gray appearance.

    • B.

      No pits or holes and has a good concave fillet.

    • C.

      No pits or holes and has a good convex fillet.

    • D.

      Bright and shiny with a minimum amount of pits or holes.

    Correct Answer
    B. No pits or holes and has a good concave fillet.
    Explanation
    A good solder connection should have no pits or holes, indicating that the solder has properly filled in the joint and there are no gaps or voids. Additionally, it should have a good concave fillet, meaning that the solder has formed a smooth, curved shape that indicates a strong bond between the components being soldered.

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  • 37. 

    (214) After soldering a connection, what is your next step?

    • A.

      Use a file to clean the connection.

    • B.

      Pull on the wire to ensure a good connection.

    • C.

      Clean the connection and inspect it for defects.

    • D.

      Reference the insulation clearance from the base of the terminal.

    Correct Answer
    C. Clean the connection and inspect it for defects.
    Explanation
    After soldering a connection, the next step is to clean the connection and inspect it for defects. This is important to ensure that the connection is free from any debris or flux residue that may affect its performance. Inspecting the connection allows for identification of any defects or issues that may need to be addressed before moving forward. This step helps to ensure the quality and reliability of the soldered connection.

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  • 38. 

    (214) You prepped the wire and are ready to solder a cup terminal. What is your next step?

    • A.

      Insert the tinned wire.

    • B.

      Melt a small amount of solder inside the terminal.

    • C.

      Measure the insulation clearance from the end of the terminal to the insulation.

    • D.

      Remove flux and impurities with a medium-stiff brush dipped in cleaning solvent.

    Correct Answer
    B. Melt a small amount of solder inside the terminal.
    Explanation
    After prepping the wire, the next step is to melt a small amount of solder inside the terminal. This is done to ensure a secure and strong connection between the wire and the terminal. The melted solder will fill any gaps or spaces inside the terminal, creating a solid bond. This step is crucial in achieving a reliable and durable solder joint.

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  • 39. 

    (215) How many British thermal units (BTU) does it take to raise the temperature of 5 pounds of water 5 Fahrenheit (F)?

    • A.

      1

    • B.

      5

    • C.

      17

    • D.

      25

    Correct Answer
    D. 25
    Explanation
    To calculate the number of British thermal units (BTU) required to raise the temperature of water, we need to use the specific heat capacity of water. The specific heat capacity of water is 1 BTU/lb.°F. In this case, we have 5 pounds of water and we need to raise the temperature by 5°F. Therefore, the calculation would be 5 pounds * 5°F * 1 BTU/lb.°F = 25 BTU. Thus, it takes 25 BTU to raise the temperature of 5 pounds of water by 5°F.

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  • 40. 

    (215) What happens when gas is trapped in a cylinder and pressure is applied to the piston, while the temperature remains constant?

    • A.

      Volume will increase.

    • B.

      Volume will decrease.

    • C.

      Temperature will decrease.

    • D.

      Temperature will not change.

    Correct Answer
    B. Volume will decrease.
    Explanation
    When gas is trapped in a cylinder and pressure is applied to the piston, while the temperature remains constant, the volume of the gas will decrease. This is because according to Boyle's Law, when the temperature of a gas remains constant, the pressure and volume are inversely proportional. Therefore, an increase in pressure will result in a decrease in volume.

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  • 41. 

    (215) When a gas is heated, its pressure will

    • A.

      Stay the same.

    • B.

      Fluctuate.

    • C.

      Decrease.

    • D.

      Increase.

    Correct Answer
    D. Increase.
    Explanation
    When a gas is heated, the average kinetic energy of its particles increases. This increase in kinetic energy leads to more frequent and forceful collisions between the gas particles and the walls of the container. As a result, the gas exerts a greater force on the walls, causing an increase in pressure. Therefore, when a gas is heated, its pressure will increase.

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  • 42. 

    (216) A permanent magnet

    • A.

      Loses its retentivity.

    • B.

      Keeps its magnetism.

    • C.

      Loses its permeability.

    • D.

      Keeps small amounts of reluctance.

    Correct Answer
    B. Keeps its magnetism.
    Explanation
    A permanent magnet is able to keep its magnetism because it is made of materials that have strong magnetic properties. These materials, such as iron, cobalt, and nickel, have their atomic magnetic moments aligned in a way that creates a strong magnetic field. This alignment remains even when the external magnetic field is removed, allowing the magnet to retain its magnetism over a long period of time.

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  • 43. 

    (216) The greater the current flow through an electromagnet, the

    • A.

      Greater the retentivity.

    • B.

      Lesser the field strength.

    • C.

      Greater the field strength.

    • D.

      Higher the core reluctance.

    Correct Answer
    C. Greater the field strength.
    Explanation
    The greater the current flow through an electromagnet, the stronger the magnetic field it produces. This is because the magnetic field is directly proportional to the current flowing through the electromagnet. Therefore, as the current increases, the field strength also increases.

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  • 44. 

    (217) The intensity of electrical current flow is measured in

    • A.

      Volts.

    • B.

      Cycles.

    • C.

      Amperes.

    • D.

      Coulombs.

    Correct Answer
    C. Amperes.
    Explanation
    The intensity of electrical current flow is measured in amperes. Amperes, also known as amps, are the unit of measurement for electric current. It represents the rate of flow of electric charge in a circuit. Volts, on the other hand, measure the electric potential difference or voltage, cycles measure the frequency of alternating current, and coulombs measure the quantity of electric charge. Therefore, the correct answer is amperes.

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  • 45. 

    (217) What is the symbol for Ohms?

    • A.

      The quiz will not let me put the omeaga symbol in, so click this one

    • B.

      Not this one

    • C.

      Not this one

    • D.

      Stop reading and click A

    Correct Answer
    A. The quiz will not let me put the omeaga symbol in, so click this one
  • 46. 

    (218) The basic function of electricity is to

    • A.

      Develop energy.

    • B.

      Create energy.

    • C.

      Destroy energy.

    • D.

      Transfer energy.

    Correct Answer
    D. Transfer energy.
    Explanation
    Electricity is the flow of electrons through a conductor. Its basic function is to transfer energy from one place to another. When an electric current flows, it carries energy with it, allowing it to power devices, generate heat, or produce light. Therefore, the correct answer is "transfer energy."

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  • 47. 

    (218) According to Kirchhoff’s voltage law, in a closed circuit, the applied voltage is equal to the

    • A.

      Product of the voltage drops across each resistor.

    • B.

      Sum of the voltage drops around the circuit.

    • C.

      Quotient of resistance divided by current.

    • D.

      Sum of current and resistance.

    Correct Answer
    B. Sum of the voltage drops around the circuit.
    Explanation
    According to Kirchhoff's voltage law, the sum of the voltage drops around a closed circuit is equal to the applied voltage. This means that as the current flows through the circuit, it encounters resistance in the form of resistors and the voltage drops across each resistor. The sum of these voltage drops is equal to the applied voltage. Therefore, the correct answer is "sum of the voltage drops around the circuit."

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  • 48. 

    (219) Applied voltage in a parallel circuit is 12 volts, and there are two parallel branches with one 6-ohm resistor in each branch. The voltage drop across each resistor is

    • A.

      2 volts

    • B.

      6 volts

    • C.

      12 volts

    • D.

      24 volts

    Correct Answer
    C. 12 volts
    Explanation
    In a parallel circuit, the voltage across each branch is the same. Since the applied voltage is 12 volts and there are two parallel branches, the voltage drop across each resistor would also be 12 volts. This is because the voltage is divided equally among the branches in a parallel circuit.

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  • 49. 

    (219) The total resistance in a parallel circuit is always

    • A.

      Equal to the largest resistance in the circuit.

    • B.

      Equal to the smallest resistance in the circuit.

    • C.

      More than the largest resistance in the circuit.

    • D.

      Less than the smallest resistance in the circuit.

    Correct Answer
    D. Less than the smallest resistance in the circuit.
    Explanation
    In a parallel circuit, the total resistance is always less than the smallest resistance in the circuit. This is because in a parallel circuit, the current has multiple paths to flow through. As a result, the total resistance decreases as more paths are added, making it easier for the current to flow. The smallest resistance offers the easiest path for the current, so the total resistance will be less than that value.

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  • 50. 

    (219) To find the total resistance in a series-parallel circuit, you must

    • A.

      Know the total current flow.

    • B.

      Divide current flow by the applied voltage.

    • C.

      Add the total resistance of the parallel part to the total resistance of the series part.

    • D.

      Add the sum of the resistance in the parallel part to the resistance of the series resistor.

    Correct Answer
    C. Add the total resistance of the parallel part to the total resistance of the series part.
    Explanation
    To find the total resistance in a series-parallel circuit, you need to add the total resistance of the parallel part to the total resistance of the series part. This is because in a series-parallel circuit, the resistors are connected both in series and in parallel. When resistors are connected in series, their resistances add up, while when they are connected in parallel, their resistances combine using the reciprocal formula. Therefore, to find the total resistance, you need to consider both the series and parallel resistances and add them together.

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Quiz Review Timeline +

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

  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 18, 2013
    Quiz Created by
    Roach187fw

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