A+ Form Factors And Power Supplies Chapter 4 Test

The form factor refers to the physical characteristics of a hardware component, including its size, shape, and major features. This includes factors such as the dimensions, mounting options, and connectors present on the component. Therefore, the statement "The form factor describes the size, shape, and major features of a hardware component" is true.

Direct current is the correct answer because it travels in only one direction and is the type of current that most electronic devices require, including computers. Unlike alternating current, which constantly changes direction, direct current provides a consistent flow of electricity, making it ideal for powering electronic devices. Oscillating current and neutral current are not valid options as they do not accurately describe the type of current required by electronic devices.

When replacing a damaged motherboard with a good one, it is important to first test the power supply. This is because a faulty power supply can cause various issues such as insufficient power delivery to the components, leading to system instability or failure. By testing the power supply, one can ensure that it is functioning properly and providing adequate power to the motherboard and other components. This helps in preventing any potential damage to the new motherboard and ensures a smooth and successful replacement process.

The correct answer is AC (alternating current). In the United States, the house current oscillates 60 times per second, indicating a frequency of 60 hertz. AC current alternates its direction periodically, allowing for the efficient transmission of electricity over long distances. In contrast, DC (direct current) flows in one direction only and is commonly used in batteries and electronic devices.

A conductor is a material that easily conducts electricity, such as gold or copper. Conductors have a high number of free electrons that are able to move freely within the material when an electric field is applied. This allows for the easy flow of electric current through the conductor.

A power supply is considered a field replaceable unit because it is designed to be easily replaced in the field without requiring any special tools or expertise. This means that if a power supply fails or needs to be upgraded, it can be quickly and easily replaced by simply unplugging the old unit and plugging in a new one. This convenience and ease of replacement make power supplies a common example of field replaceable units in various electronic devices and systems.

A surge protector is an electronic device that safeguards equipment from sudden changes in power level, such as power surges or spikes. These power fluctuations can occur due to lightning strikes, power outages, or electrical faults. Surge protectors work by diverting excess voltage away from the connected devices, preventing damage to them. They typically have multiple outlets and may also include features like surge suppression and noise filtering to provide additional protection. Therefore, a surge protector is the correct answer for protecting equipment against sudden changes in power level.

The motherboard drives the decision on which form factor to use because it determines the physical layout and size of the computer system. Different motherboards support different form factors, such as ATX, micro ATX, or mini ITX. The form factor of the motherboard determines the size and shape of the computer case, as well as the compatibility of other components such as the CPU and peripheral devices. Therefore, the motherboard is the primary factor that influences the choice of form factor for a computer system.

Using a soft switch, an operating system like Windows XP can turn off the power to a system after the shutdown procedure is done. This means that the operating system has the capability to control the power supply and initiate a complete shutdown of the system, including cutting off the power. This feature allows for a more efficient and convenient shutdown process, as it eliminates the need for manually turning off the power after shutting down the system.

An insulator is a material that does not allow the flow of electricity easily. It has high resistance to the flow of electric current. Materials like glass and ceramic are examples of insulators as they do not conduct electricity well. Unlike conductors, which allow electricity to flow through them easily, insulators prevent the flow of electrical charges, making them suitable for applications where electrical isolation is required.

Active backplanes are capable of processing and controlling data, while passive backplanes simply act as a connector or interface between different components. Active backplanes have their own circuitry and can perform functions such as data routing, signal amplification, and protocol conversion. Passive backplanes, on the other hand, rely on external devices to perform these functions. Therefore, the correct answer is active and passive, as these are the two types of backplanes based on their functionality.

A computer case is also known as a chassis. The term "chassis" refers to the framework or outer structure of a computer case that houses and protects the internal components of a computer system. It provides a sturdy and secure enclosure for the various hardware components such as the motherboard, power supply, storage devices, and cooling system. The chassis also often includes features such as expansion slots, drive bays, and ports for connecting peripherals.

This symbol on an electrical diagram represents the ground. Ground is a reference point in an electrical circuit that is connected to the earth or a large conducting body, such as a metal water pipe or a grounding rod. It serves as a common return path for electric current and helps to prevent electrical shocks and equipment damage.

A capacitor is an electronic device that can store electrical charge for a period of time. It consists of two conductive plates separated by an insulating material. When a voltage is applied across the plates, one plate accumulates positive charge while the other accumulates negative charge. This stored charge can then be released when needed, smoothing out the uneven flow of electricity through a circuit. Therefore, a capacitor is the correct answer for the given question.

This symbol represents a resistor on an electrical diagram. A resistor is an electronic component that limits the flow of electric current in a circuit. It is typically represented by a zigzag line in circuit diagrams. Resistor values are measured in ohms and they are used to control the amount of current flowing through a circuit and to adjust voltage levels.

EMI stands for Electromagnetic Interference, which is caused by the magnetic field produced as a side effect when electricity flows. This interference can disrupt the normal functioning of electronic devices and can be caused by various sources such as power lines, motors, and radio signals. EMI can result in signal degradation, data loss, or even complete failure of electronic systems. Therefore, EMI is the correct answer in this case.

The correct answer is "Amps or amperes." Amps or amperes is the unit used to measure electrical current. It represents the rate at which electric charges flow in a circuit. Ohms is the unit used to measure electrical resistance, watts is the unit used to measure power, and "whatts" is not a recognized unit of measurement.

The statement "BTX motherboards cannot use an ATX power supply" is false. BTX motherboards are designed to be compatible with ATX power supplies. The BTX form factor was introduced as an alternative to the ATX form factor, but it still supports the use of ATX power supplies. This allows users to easily upgrade their system without having to replace the power supply.

False. In PC's and DC circuits, the black wire is commonly used for the negative or return path, while the ground wire is usually green or bare. In home wiring and AC circuits, the black wire is typically used for the hot or live wire, while the ground wire is green or bare.

BTX (Balanced Technology eXtended) is the latest form factor. It was introduced by Intel as an improvement over the ATX form factor. BTX offers better cooling and noise reduction capabilities compared to ATX, as it features a redesigned layout and airflow system. It also supports newer technologies such as PCI Express and Serial ATA. NLX and Baby AT are older form factors that have been largely replaced by ATX and BTX.