FCC Exam Questions: Quiz!

This fastener is called a U-Bolt. It is a type of bolt that has a U-shaped bend and threads on both ends. It is commonly used to secure pipes, cables, or other objects to surfaces. The U-shape allows for easy installation and provides a secure grip around the object being fastened.

The correct answer is Square Washer because a square washer is a type of washer that has a square shape with a hole in the center. It is commonly used in construction and engineering applications to provide a larger bearing surface and distribute the load evenly. The square shape helps to prevent the washer from rotating, providing better stability and security.

When designing a wireless router for sale in the US, regulatory approval must be sought from the FCC (Federal Communications Commission). The FCC is responsible for regulating and overseeing all communications technologies within the United States, including wireless devices. They ensure that these devices comply with certain standards and regulations to prevent interference with other devices and ensure the safety of users. Therefore, obtaining approval from the FCC is necessary to legally sell wireless routers in the US market.

RoHS stands for Restriction of Hazardous Substances. This acronym refers to a directive that restricts the use of certain hazardous substances in electrical and electronic equipment. The purpose of RoHS is to protect human health and the environment by reducing the amount of hazardous materials, such as lead, mercury, and cadmium, in products. By restricting the use of these substances, RoHS aims to promote the development and use of safer and more environmentally friendly alternatives.

The correct answer is Self-Drilling Sheet Metal Screw. This type of fastener is specifically designed to drill its own hole in sheet metal, eliminating the need for pre-drilling. It has a sharp, pointed tip and a threaded body that allows it to securely fasten metal sheets together. Wood screws are designed for use in wood, while machine screws are typically used with nuts or tapped holes in metal.

The correct answer is Phillips / Frearson. Phillips / Frearson is a type of drive that is commonly used in screws and screwdrivers. It has a cross-shaped recess with rounded edges, allowing for better torque transmission and reducing the risk of cam-out. This type of drive is widely used in various industries and applications, making it a popular choice for fastening materials together.

This schematic symbol represents a variable capacitor, also known as a trimmer cap. A variable capacitor is a type of capacitor that allows the capacitance value to be adjusted manually or electronically. It is commonly used in electronic circuits where precise tuning or adjustment of capacitance is required. The symbol consists of two parallel lines with an arrow pointing towards them, indicating the adjustable nature of the capacitor.

The correct answer is Hex because Hex refers to a type of drive commonly found on screws and bolts. It has a hexagonal shape with six sides, allowing for better grip and torque when using a wrench or an Allen key. The other options, Robertson and Torx, are different types of drive systems commonly used in screws and bolts, but they are not the correct answer in this case.

This question is asking about the type of washer being referred to. The answer is "Flat" because a flat washer is a type of washer that has a flat surface and is typically used to distribute the load of a threaded fastener, such as a bolt or nut.

The given options "Tooth Lock," "Dock," and "Split-Lock" suggest different types of washers. Among these options, "Split-Lock" is the correct answer as it refers to a type of washer that has a split design, allowing it to be easily inserted and removed from a bolt or screw. This type of washer is commonly used to prevent loosening or rotation of fasteners and provides a secure and tight fit.

This head style is called a round head.

This schematic symbol represents a capacitor that is unpolarized. A capacitor is an electronic component that stores electrical energy in an electric field. The fact that it is unpolarized means that it can be connected in either direction in a circuit, unlike polarized capacitors which have a specific positive and negative terminal.

This schematic symbol represents an incandescent bulb. It is commonly used to represent a light source in electrical circuit diagrams. The symbol consists of a circle with a cross inside it, representing the filament of the bulb, and two lines extending from the circle, representing the electrical connections. Incandescent bulbs produce light by heating a filament until it glows, and they are commonly used in household lighting applications.

The symbol indicates that the object or area is static sensitive and should not be touched. Static sensitive components are vulnerable to damage caused by electrostatic discharge (ESD) from human touch. This symbol serves as a warning to prevent individuals from coming into contact with the object or area in order to avoid potential damage.

A carriage bolt is a type of fastener that has a smooth, dome-shaped head and a square or hexagonal shoulder beneath the head. It is designed to be used with a nut and is commonly used in woodworking applications where a smooth finish is desired. The smooth head of the carriage bolt prevents it from snagging on materials and allows for a clean, finished appearance.

Torx is a type of drive that is commonly used in automotive and electronics industries. It has a six-pointed star-shaped pattern with a central pin, which provides better torque transfer and reduces the risk of cam-out (slippage) compared to other drive types like hex or Allen. Torx screws are known for their durability and ability to handle high torque applications, making them a popular choice in various industries.

The given head style is Hex Washer.

This schematic symbol represents a Zener Diode. A Zener diode is a type of diode that operates in the reverse-biased breakdown region, allowing current to flow in the reverse direction when a certain voltage, known as the Zener voltage, is reached. It is commonly used as a voltage regulator or in voltage reference applications.

ESD stands for Electrostatic Discharge. Electrostatic discharge refers to the sudden flow of electricity between two electrically charged objects caused by contact, an electrical short, or a dielectric breakdown. This discharge can result in damage to electronic components and devices.

This type of washer is called an internal tooth lock because it has teeth on the inner side of the washer that grip onto the surface it is placed against. These teeth help to prevent the washer from rotating or loosening when under pressure or vibrations, providing a secure fastening solution.

This head style is called Socket Cap.

The first step when planning a project should be to define the project goals. This is important because it sets the direction and purpose of the project. By clearly defining the goals, the project team can align their efforts towards achieving them. Without clearly defined goals, it would be difficult to determine the scope, timeline, and deliverables of the project. Therefore, defining the project goals is essential for effective project planning and execution.

According to IPC-A-610E, the perfect solder joint condition is known as the "Target Condition." This means that the solder joint meets the specific requirements and criteria set by the IPC-A-610E standard, ensuring that it is of high quality and meets the desired specifications. The target condition represents the ideal outcome for a solder joint and indicates that it is in the best possible condition.

The correct answer is Slotted because Slotted refers to a type of drive that has a single straight slot in the screw head, allowing it to be turned using a flat-blade screwdriver. The other options, Frearson and Phillips, are different types of drives with different slot configurations.

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This schematic symbol represents an antenna. An antenna is a device used to transmit and receive electromagnetic waves, such as radio waves. It is commonly used in communication systems to transmit and receive signals wirelessly. The symbol represents the physical shape and structure of an antenna, which typically consists of a conductive element that is designed to efficiently radiate or receive electromagnetic waves.

The symbol on the plastic bag indicates that it provides protection against Electrostatic Discharge (ESD). ESD can occur when there is a sudden flow of electricity between two objects, which can damage sensitive electronic components. This symbol serves as a warning to handle the bag with caution and use appropriate ESD protection to prevent any potential damage to the contents inside.

This fastener is identified as a machine screw. Machine screws are threaded fasteners that are designed to be used with a tapped hole or nut to securely fasten two or more components together. They have a uniform diameter along their entire length and are typically used in machinery and equipment where a tight and secure connection is required. Set screws are similar, but they do not have a tapered head like machine screws. Carriage bolts have a round head and a square neck, which prevents them from turning when tightened.

A hanger bolt is a type of fastener that has a threaded shaft on one end and a wood screw thread on the other end. It is commonly used to hang or secure objects to wooden surfaces. The threaded end of the hanger bolt can be screwed into a pre-drilled hole in the wood, while the wood screw end can be used to attach objects such as brackets or hooks. This type of fastener provides a strong and secure connection between the object and the wooden surface.

The drive type in question is a Combination drive. This type of drive combines two different drive types, typically a Phillips and a slotted drive, into one. It allows for the use of either type of screwdriver, providing versatility and convenience.

This type of washer is called an external tooth lock washer. It is used to prevent a nut or bolt from loosening under vibration or torque by providing a gripping surface between the fastener and the mating surface. The external teeth on the washer bite into the material, creating friction and preventing rotation. This type of washer is commonly used in automotive, construction, and industrial applications.

According to IPC-A-610E, Class 3 products are considered high-performance electronic products that are expected to function without failure in harsh environments. An aircraft satellite navigation system is a critical component of an aircraft's navigation system and is required to operate reliably under extreme conditions. Therefore, it falls under Class 3 product class.

A thread-cutting machine screw is a type of fastener that is designed to create threads in a pre-drilled hole. It is typically used in metal applications where a strong and secure connection is required. This type of screw has a sharp, pointed tip and a coarse thread pattern that allows it to cut into the material as it is being driven in. It is not designed for use in wood or sheet metal applications, which is why the other options are incorrect.

This schematic symbol represents a normally-open push-button switch. This type of switch is designed to be normally open, meaning that the circuit is not complete when the switch is in its default position. When the button is pressed, it closes the circuit and allows the current to flow through. This type of switch is commonly used in applications where a momentary connection or interruption of the circuit is required.

The third step when planning a project should be to create a project timeline. This is important because a timeline helps to establish the sequence and duration of activities, allowing for better coordination and scheduling of tasks. By creating a project timeline, the project manager can effectively allocate resources, set realistic deadlines, and ensure that the project stays on track. It also helps in identifying dependencies between tasks and allows for better monitoring and control of the project progress.

This schematic symbol represents a BJT - PNP (Bipolar Junction Transistor - PNP). A BJT is a three-layer semiconductor device that can amplify or switch electronic signals and is commonly used in electronic circuits. The PNP type BJT consists of a layer of p-type semiconductor sandwiched between two layers of n-type semiconductor. The symbol represents the arrangement of these layers and the direction of current flow.

This schematic symbol represents an NPN phototransistor. A phototransistor is a type of transistor that is sensitive to light. It is designed to amplify and switch electronic signals and is commonly used in applications such as light sensors and optical communication systems. The NPN configuration indicates that the transistor is made up of three layers of semiconductor material, with a layer of N-type material sandwiched between two layers of P-type material.

The schematic symbol represents an N-Channel MOSFET. MOSFET stands for Metal-Oxide-Semiconductor Field-Effect Transistor, which is a type of transistor used for amplifying or switching electronic signals. The N-Channel MOSFET has a channel formed by a positively charged substrate with two negatively charged regions on either side. When a positive voltage is applied to the gate terminal, it creates an electric field that allows current to flow through the channel. This symbol is commonly used in circuit diagrams to represent an N-Channel MOSFET.

RoHS is a European initiative.

This type of fastener is called a wood screw because it is specifically designed to be used in wood materials. Wood screws have a tapered point and coarse threads that provide a strong hold in wood, making them ideal for woodworking projects. They are often used to join pieces of wood together or to attach hardware to wooden surfaces.

This head style is called Slotted Hex Washer. It is characterized by a hexagonal shape with a slotted indentation in the center. The slotted feature allows for the use of a flathead screwdriver or a slotted screwdriver to tighten or loosen the screw. The washer design provides additional stability and prevents the screw from sinking into the material it is being fastened to.

This schematic symbol represents a P-Channel Metal-Oxide Semiconductor Field Effect Transistor (MOSFET). A MOSFET is a type of transistor that is used for amplifying or switching electronic signals. The P-Channel MOSFET has a P-type semiconductor as the channel between the source and drain terminals. The symbol represents the structure of a MOSFET, with the gate terminal controlling the flow of current between the source and drain terminals.

This schematic symbol represents a P-Channel JFET. JFET stands for Junction Field Effect Transistor, and it is a type of transistor that uses a voltage applied across a semiconductor channel to control the current flow. The P-Channel JFET has a P-type channel and is controlled by a negative voltage applied to the gate terminal.

The schematic symbol represents an NPN Transistor (BJT). A BJT, or Bipolar Junction Transistor, is a three-layer semiconductor device commonly used for amplification or switching of electronic signals. The NPN configuration consists of two N-type layers sandwiching a P-type layer. The symbol shows an arrow pointing outwards from the base, indicating the direction of conventional current flow when the transistor is in active mode.

This fastener is a hex bolt because it has a hexagonal head, which allows for easy tightening and loosening using a wrench or a socket. Hex bolts are commonly used in construction and machinery, as they provide a secure and durable fastening solution.

This head style is called a flat head because it has a flat top surface. It is typically used when a flush appearance is desired, as it sits flush with the surface it is screwed into. This type of head is commonly used in woodworking and other applications where the screw head should not protrude.

The given options represent different types of file cuts. "Single Cut" and "Single-Cut" both refer to a type of file cut that has a single row of teeth. "Double Cut" and "Double-Cut" both refer to a type of file cut that has two rows of teeth.

A Triac is a three-terminal electronic component that functions as a bidirectional switch. It is commonly used in AC power control applications, such as dimming lights or controlling the speed of motors. The symbol for a Triac in a schematic diagram consists of two back-to-back thyristors, with a gate terminal in the middle. This allows current to flow in both directions when triggered by a small current applied to the gate terminal. Therefore, the correct answer is Triac.

According to IPC-A-610E, the timer board for a household coffee maker would fall under Class 1 product class. Class 1 is the lowest level of product class and is suitable for products where the performance and reliability requirements are minimal. This means that the timer board for a household coffee maker, which is a non-critical component, does not require high-performance or stringent reliability standards.

According to IPC-A-610E, an SRS Airbag Control Module would fall under Class 3 product class. This class is for high-performance electronic products, where continued performance or performance on demand is critical, and downtime cannot be tolerated. Class 3 products are typically used in aerospace, military, and medical applications, where reliability and quality are of utmost importance.