Electronics Workshop Practice 2 First Online Short Quiz

A radiation shield is a laboratory material that acts as protection and absorbs the energy of radiation. It is designed to prevent harmful radiation from reaching the person using it, thereby keeping them safe. This shield is commonly used in medical facilities, research laboratories, and nuclear power plants to protect workers and patients from the harmful effects of radiation exposure. It is made of materials that have high atomic numbers, such as lead or concrete, which are effective in absorbing and blocking radiation.

The correct answer is Ear Drum. The ear drum, also known as the tympanic membrane, is a thin, sensitive membrane that separates the outer ear from the middle ear. When sound waves enter the ear, they cause the ear drum to vibrate. These vibrations are then transmitted to the middle ear, where they are further amplified and transmitted to the inner ear. The vibrations in the ear drum are converted into electrical signals that are sent to the brain, allowing us to perceive and hear sounds.

The decibel is the unit used to measure the intensity of a sound. It is a logarithmic unit that compares the sound pressure level to a reference level. This unit is commonly used in acoustics and telecommunications to quantify the loudness or volume of a sound. The decibel scale allows for a wide range of sound intensities to be represented in a more manageable and meaningful way.

An oscilloscope is a laboratory instrument commonly used to display and analyze the waveform of electronic signals. It allows users to observe the shape, amplitude, frequency, and other characteristics of electrical signals. Oscilloscopes are essential tools for engineers, technicians, and researchers working in fields such as electronics, telecommunications, and physics. They are used for troubleshooting, designing, and testing electronic circuits and systems. Oscilloscopes typically have a display screen that shows the waveform graphically, with time represented on the x-axis and voltage on the y-axis. They provide valuable insights into the behavior and performance of electronic signals.

A heatsink is used when soldering temperature-sensitive components like integrated circuits because it helps dissipate heat and prevent the component from getting damaged due to excessive heat. The heatsink absorbs and disperses the heat generated during soldering, keeping the temperature of the component within a safe range. This is important because high temperatures can cause the component to malfunction or even permanently fail. By using a heatsink, the soldering process can be completed without risking damage to the temperature-sensitive component.

A Materials Safety Data Sheet (MSDS) is a document that provides information about the potential hazards associated with a chemical product and instructions on how to handle it safely. It includes details on health hazards, fire hazards, reactivity hazards, and environmental hazards. The MSDS also provides information on proper storage, handling, and disposal of the chemical. It is an essential resource for workers who come into contact with hazardous chemicals, as it helps them understand the risks involved and take appropriate safety precautions.

PDCA stands for Plan-Do-Check-Act, which is an iterative four-cycle used in business for process control and continuous improvement. The cycle starts with planning, where objectives and processes are established. Then, the plan is executed (do), and the results are measured and compared to the objectives (check). Based on the evaluation, necessary adjustments and improvements are made (act). This cycle is repeated continuously to ensure ongoing improvement and efficiency in processes or products.

Tweeters are driver types that are specifically designed to produce the highest frequencies. They are smaller units compared to woofers and mid-range drivers, and their main purpose is to reproduce high-pitched sounds with clarity and precision. While woofers and mid-range drivers are responsible for handling lower and mid-range frequencies respectively, tweeters excel in producing the highest frequencies in audio systems.

A speaker is a transducer that converts an electric signal into sound. It takes the electrical energy from an audio source and converts it into mechanical vibrations, which in turn create sound waves that can be heard by humans. This makes the speaker an essential component in audio systems, such as in radios, televisions, and music players, as it allows us to listen to the amplified sound produced by these devices.

The given answer "Plan" is correct because in the Plan-Do-Check-Act (PDCA) cycle, the first step is to plan. This involves identifying the problems or processes that need improvement and determining the improvement opportunities. Planning sets the foundation for the rest of the cycle by outlining the objectives, goals, and strategies to achieve the desired improvements.

Shitzuke is a Japanese term that refers to self-discipline and commitment towards work. It is a concept that emphasizes the importance of personal responsibility and dedication in achieving goals. This term encourages individuals to maintain a strong work ethic, adhere to set standards, and continually strive for improvement. By embodying shitzuke, individuals demonstrate their commitment to their work and their willingness to go above and beyond to achieve success.

The spider is a component in a speaker that holds the coil in position while allowing it to move freely back and forth. It acts as a suspension system, providing stability and support to the coil and diaphragm. Without the spider, the coil would not be able to move properly, resulting in distorted or poor quality sound.

A crossover is an electronics device that takes a single input signal and separates it into two or three output signals consisting of different frequency ranges. It is commonly used in audio systems to direct specific frequency bands to different speakers or drivers, such as high-range frequencies to tweeters, mid-range frequencies to midrange drivers, and low-range frequencies to woofers. This helps to ensure that each speaker or driver is playing the appropriate frequencies, resulting in a more balanced and accurate sound reproduction.

The correct answer is "Cone" because it is usually made of paper, plastic or metal and is attached to the wide end of the suspension. The cone is an essential component of a speaker as it vibrates to produce sound waves when the voice coil interacts with the magnetic field.

The correct answer is "Bunny Suit" because it is a type of protective clothing specifically designed for use in microchip processing plants. It covers the entire body, including the head, to prevent any hair, skin, or dust particles from contaminating the delicate microchips. The term "Bunny Suit" is commonly used in the industry to refer to this type of protective clothing.

Seiso is the correct answer because it refers to the act of cleaning and maintaining the workplace. This includes not only tidying up the area but also eliminating any potential sources of dirt or clutter. By regularly cleaning the workplace and addressing the root cause of any mess or disorganization, employees can create a clean and efficient working environment.

The correct answer is Suspension. The explanation for this is that the suspension is a rim of flexible material that allows the cone to move. It is attached to the driver's metal frame, which is called the basket. The suspension plays a crucial role in allowing the cone to move back and forth, enabling the production of sound waves. Without a proper suspension, the cone would not be able to move freely, resulting in distorted or no sound output.

The correct answer is air pressure level because the amplitude of a sound wave corresponds to the variation in air pressure caused by the wave. The higher the amplitude, the greater the variation in air pressure, resulting in a louder sound. Therefore, the air pressure level directly determines the loudness of the sound.

Seiri is a Japanese term that refers to the practice of removing unnecessary or unwanted items/materials. It is a key principle of the 5S methodology, which aims to improve efficiency and organization in the workplace. By eliminating clutter and streamlining the workspace, Seiri helps to create a more productive and visually appealing environment. This practice involves identifying and categorizing items, discarding those that are no longer needed, and organizing the remaining essential items in a logical manner. Overall, Seiri promotes a clean and organized workspace, leading to improved productivity and reduced waste.

The correct answer is "A World-Class University Producing Leaders and Change Agents for Social Transformation and Development". This answer accurately reflects the vision of Bicol University, which aims to be a world-class institution that produces leaders and change agents who can contribute to social transformation and development.