Hot questions

What is the primary function of a multimeter?
Answer : The primary function of a multimeter is to measure various electrical properties. A multimeter can measure: 1. **Voltage** (both AC and DC) 2. **Current** (both AC and DC) ... continuity and diodes. It's a versatile tool used for troubleshooting and diagnosing electrical circuits and components....

How does a power factor correction (PFC) circuit reduce harmonic distortion?
Answer : Power Factor Correction (PFC) circuits are primarily designed to improve the power factor of electrical systems, which can indirectly help in reducing harmonic distortion. Here's how PFC ... This results in improved system efficiency, reduced losses, and better performance of electrical equipment....

Which engineer has lowest salary?
Answer : Salaries for engineers can vary widely based on factors like location, industry, experience, and education. Generally speaking, among different types of engineers, roles that require less ... the specific context and geographic location, as these factors can significantly influence salary ranges....

Name any two applications of following gases. (i) Nitrogen (ii) Hydrogen (iii) Sf6 (iv) Air.
Answer : Here are two applications for each of the following gases: ### (i) **Nitrogen (N₂)** 1. **Inert Atmosphere in Industrial Processes**: Nitrogen is used to create an inert atmosphere ... and deliver medications. These gases play crucial roles in various industries, thanks to their unique properties....

Why does an inductor oppose AC current?
Answer : An inductor opposes alternating current (AC) due to its fundamental electrical properties, specifically its ability to store and release energy in a magnetic field. This opposition to AC current can be ... a resistor to AC, with its opposition increasing as the frequency of the AC signal rises....

Explain the working principle of a successive approximation register (SAR) ADC.
Answer : A successive approximation register (SAR) ADC (Analog-to-Digital Converter) is a type of ADC that converts an analog signal into a digital signal using a binary search approach. Here's ... devices. This efficient and systematic approach makes SAR ADCs a popular choice for many electronic systems!...

What is the purpose of a bias resistor in a transistor circuit?
Answer : A bias resistor in a transistor circuit plays a crucial role in setting the operating conditions of the transistor, ensuring that it functions correctly within the circuit's design parameters. ... design of bias resistors are key to achieving reliable and optimal performance in transistor circuits....

What is susceptibility in terms of dielectric constant?
Answer : In electromagnetism, **susceptibility** and the **dielectric constant** (also known as relative permittivity, \( \epsilon_r \)) are closely related concepts that describe the response ... ) are used in capacitors and other devices where efficient electric field manipulation is important....

What is the time constant of the RL RC circuit?
Answer : The time constant is a measure of how quickly a circuit responds to changes in voltage. For RL (resistor-inductor) and RC (resistor-capacitor) circuits, the time constants are calculated ... circuits react to changes in their inputs, affecting the transient response and stability of the system....

What is the point where electric potential is zero?
Answer : The point where electric potential is zero is a location in an electric field where the net electric potential due to all charges is zero. This concept can be understood more clearly with a ... magnitudes of the charges involved and is usually found by solving the equation for zero net potential....

What phenomenon causes polarization?
Answer : Polarization is a fascinating phenomenon that can occur with various types of waves, including light waves, sound waves, and electromagnetic waves. Here's a detailed explanation of what ... waves oscillating in a particular direction, which can be harnessed for various practical applications....

What happens to resistance with increase in temperature?
Answer : Are you asking about the resistance of a specific type of material, like metals or semiconductors?...

When the length of wire is stretched, n times its length?
Answer : When a wire is stretched to \( n \) times its original length, its physical properties change in a way that affects its resistance. Here's a detailed explanation: ### 1. ... shows that the resistance increases significantly with stretching, due to the reduction in cross-sectional area....

What are the 5 vectors in physics?
Answer : In physics, the concept of vectors is fundamental for describing quantities that have both magnitude and direction. While there are many different types of vectors used in various contexts, ... physical phenomena. They are fundamental to mechanics, electromagnetism, and many other areas of physics....

What are k and o symbols for?
Answer : In various contexts, the symbols \( k \) and \( o \) can have different meanings. Here are a few common uses: 1. **Mathematics and Computer Science:** - **\( k \)**: Often ... context in which they are used. If you have a particular context in mind, I can provide a more targeted explanation....

How to run a DC motor?
Answer : What specific application or project do you have in mind for running the DC motor?...

What is the function of a relaxation oscillator?
Answer : A relaxation oscillator is an electronic circuit that generates a periodic waveform, typically a square wave or a triangle wave. It operates by charging and discharging a capacitor through a ... periodic waveforms in a variety of electronic applications, thanks to their simple design and efficiency....

Is our car's AC or DC power?
Answer : Cars use both AC (alternating current) and DC (direct current) power systems, depending on the specific components and their functions. Let's break down where and how each type of current is used in ... in most cars is DC, both AC and DC play essential roles in different components and systems....

Is a car battery a primary or secondary battery?
Answer : A car battery is a type of **secondary battery**. To understand why, it's useful to know the difference between primary and secondary batteries: 1. **Primary Batteries**: These ... . This recharging capability differentiates it from primary batteries, which are meant for single-use and disposal....

What is the difference between India and USA electricity?
Answer : The differences between electricity systems in India and the USA can be understood across several dimensions: generation, distribution, voltage and frequency standards, and infrastructure. Here's ... energy sectors, they face the common challenge of balancing sustainability with economic growth....