Google Chrome Logo

Browser Not Supported

This web application is specifically designed for the best experience on Google Chrome.

Please open this site in Chrome to continue.

If you don't have Chrome, you will be redirected to the app store.

🔍
Back
Explain the difference between GSM and CDMA technologies in mobile communication.
0 like 0 dislike

Related questions

What is the multipath fading problem in wireless communication, and how does the Orthogonal Frequency-Division Multiplexing (OFDM) modulation scheme elegantly solve this problem, which was a major limitation for previous generations of mobile technology?
Answer : This question addresses the single most challenging physical problem in mobile communication and the ingenious solution that underpins virtually all modern broadband wireless standards. --- ### **Part 1: The Problem - Multipath Fading and ... **4G LTE, 5G NR, and modern Wi-Fi (Wi-Fi 4/5/6/7)**....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

From a fundamental engineering mechanics perspective, what is the primary difference between a beam and a shaft, given that both are often long, slender components used in structural and mechanical systems?
Answer : The primary difference lies in the **type of load they are designed to resist** and, consequently, the **purpose they serve**. A **beam** is designed to resist **bending loads**, while a ... it supports. In such cases, engineers must analyze the **combined stresses** from both bending and torsion....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

In metrology, what is the fundamental difference between accuracy and precision, and why is it possible—and often dangerous—for a measurement to be highly precise but not accurate?
Answer : The fundamental difference is that **accuracy** describes the closeness of a measurement to the true value, while **precision** describes the closeness of repeated measurements to each ... . Understanding that a measurement can be consistently wrong is a foundational principle of metrology....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

In the context of green building and energy conservation, what is the fundamental difference between R-Value and U-Value, and why is one typically used for individual materials like insulation, while the other is used for complex assemblies like windows?
Answer : The fundamental difference is that they are mathematical reciprocals of each other, measuring opposite things: **R-Value measures resistance to heat flow**, while **U-Value measures the rate ... envelope that conserves energy by keeping heat inside during the winter and outside during the summer....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

What is the fundamental difference in the physical mechanism and material structure between a Light Emitting Diode (LED) and a Laser Diode, given that both are semiconductor p-n junction devices that convert electricity into light?
Answer : The difference lies in the nature of the photon emission process they utilize and the physical structure required to support that process. An LED relies on **Spontaneous Emission** to produce incoherent light, ... data | Fiber optics, barcode scanners, laser pointers, Blu-ray/DVD players |...

Show More
X Full Screen Image
Electrical Engineering

Loading products...

What is the main difference between a rectifier and an inverter in power electronics?
Answer : A rectifier converts AC (Alternating Current) → DC (Direct Current). It is used in power supplies, battery charging, and DC motor drives. Example: diode bridge rectifier. An inverter converts DC ... , wind), UPS systems, and variable-frequency drives. Example: PWM (Pulse Width Modulated) inverter....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

What is the difference between analog and digital instruments in electrical measurement?
Answer : Analog instruments use a continuously moving pointer or needle to represent the measured quantity. Example: moving-coil ammeter, analog voltmeter. They are simple and give a visual trend but have lower ... and can store or process data, but they may be costlier and require power supply/electronics....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

What is the difference between a diode and a transistor in electronics?
Answer : A diode is a two-terminal device that allows current to flow in only one direction. It is mainly used for rectification (converting AC to DC), voltage regulation, and protection ... input current/voltage, making it essential in signal amplification, digital logic circuits, and power control....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

What is the fundamental difference between Greenhouse Gases (GHGs) like carbon dioxide and Criteria Air Pollutants like sulfur dioxide, and why do they require different mitigation strategies even though they often come from the same source, such as a power plant?
Answer : The fundamental difference lies in their **mechanism of harm** and the **scale of their impact**. Greenhouse gases cause a **global, long-term** problem by altering the Earth's ... compliance with local air quality laws but still be a significant environmental concern from a climate perspective....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

What is the difference between electrical Power (kW) and electrical Energy (kWh), and why do industrial consumers get penalized for having a low Power Factor even if their energy consumption remains the same?
Answer : This question touches on the fundamental economic and technical aspects of utilizing electrical energy. The answer lies in understanding what you are billed for versus what the utility company must actually ... strain on the grid, minimizes energy losses, and frees up capacity for other customers....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

What is the difference between renewable and non-renewable resources, and why is the shift toward renewables important for sustainability?
Answer : Renewable resources are naturally replenished on a human timescale, such as solar, wind, hydro, and biomass energy. Non-renewable resources like coal, oil, and natural gas are finite ... that future generations have access to reliable energy sources without depleting the planet's natural reserves....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

What is the difference between AC (Alternating Current) and DC (Direct Current)?
Answer : Direct Current (DC): The flow of electric charge is in one constant direction. Sources include batteries, solar cells, and DC power supplies. It is mainly used in electronics, charging, ... because it can be easily transformed to higher or lower voltages using transformers, reducing energy loss....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

What is the difference between a fundamental quantity and a derived quantity? Provide two examples of each.
Answer : ### The Core Difference In simple terms, **fundamental quantities** are the basic building blocks of measurement. They are independent of each other and cannot be expressed in terms of other physical quantities. Think of them as the ... ** ($m^2$), **Speed** (m/s), **Force** (Newton or kg·m/s²) |...

Show More
X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

In C++, what is the fundamental problem that the virtual keyword solves when working with inheritance and pointers, and what is the practical difference in behavior when a base class function is declared with versus without it?
Answer : The `virtual` keyword solves the critical problem of **static vs. dynamic binding**, enabling **runtime polymorphism**, which is arguably the most powerful feature of Object-Oriented Programming. In simple terms, `virtual` ... NOTE: No 'virtual' keyword here void draw() { std::cout ...

Show More
X Full Screen Image
Electrical Engineering

Loading products...

In designing an IoT application, what are the key trade-offs between processing data in the Cloud versus at the Edge, and can you provide a real-world example where each approach is clearly superior?
Answer : This question addresses the fundamental architectural choice of "where the thinking happens" in an IoT system. The decision between Cloud and Edge computing directly impacts an application's ... data analytics, and centralized device management. This combination provides the best of both worlds....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

A set of n-identical resistors, each of resistance R ohm when connected in series have an effective resistance of X ohm and when the resistors are connected in parallel the effective resistance is Y ohm. Find the relation between R , X and Y ?
Answer : Let's break this down step-by-step to find the relationship between R, X, and Y. ### 1. Resistors in Series When resistors are connected in series, their total effective resistance is the sum of ... the **geometric mean** of the total series resistance (X) and the total parallel resistance (Y)....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

Two wires A and B are of the same metal and of same length have their areas of cross section in the ratio 2:1 if the same potential difference is applied across each wire in turn, what will be the ratio of current flowing in A & B ?
Answer : The ratio of the current flowing in wire A to wire B is **2:1**. --- ### Detailed Explanation Let's break down the problem using the relevant physics principles. #### 1. List the Given ... resistance, which is wire A. Our result confirms this: the current in A is twice the current in B....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

State the term “Phase” and “Phase difference” in case of alternating qualities.
Answer : # Phase and Phase Difference in Alternating Current: Complete Guide ## What is Phase in AC Circuits? **Phase** in alternating current (AC) systems refers to the instantaneous ... between quantities of the same frequency. Different frequency components are analyzed separately in harmonic analysis....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

Explain the choice of size and number of generator units in a power plant.
Answer : --- ### The Fundamental Trade-Off At its core, the decision boils down to a trade-off between two main approaches: 1. **A Few Large Units:** This approach leverages **economies ... designed with multiple, fast-ramping units to complement the variability of wind and solar power on the grid....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

Explain the reasons for failure of gaseous and solid dielectric materials used in electrical engineering application.
Answer : ### **Introduction to Dielectric Failure** A dielectric material is an electrical insulator that can be polarized by an applied electric field. Its primary function in electrical engineering is to ... Often a slow, aging-related process - Highly sensitive to impurities, voids, and moisture |...

Show More
X Full Screen Image
Electrical Engineering

Loading products...

Explain the use of the following components in electrical wiring system and give specification of each: (i) MCB (ii) ELCB
Answer : ### Introduction In any modern electrical wiring system, safety and protection are paramount. Devices like MCBs and ELCBs are critical safety components installed in a consumer unit (also known as a ... (lighting, sockets, etc.) | Protecting a group of circuits or an entire installation |...

Show More
X Full Screen Image
Electrical Engineering

Loading products...

Explain the uses of safety rubber hand gloves and rubber mats in electrical engineering.
Answer : In electrical engineering, safety is paramount. Two of the most fundamental and critical pieces of Personal Protective Equipment (PPE) are **safety rubber hand gloves** and **insulating rubber ... environment and preventing a worker's body from becoming the path of least resistance for electricity....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

Explain the use of following tools in carrying out electrical wiring installation: (i) Nose pliers (ii) Test lamps (iii) Crimping tools (iv) Cutter.
Answer : General Introduction In electrical wiring, using the correct tool for the job is not just about efficiency; it is a fundamental requirement for safety and the quality of the finished installation. A poor ... Do not use them to cut steel wire or screws, as this will damage the cutting edges....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

From a physics perspective, what makes a semiconductor like silicon fundamentally different from a conductor like copper or an insulator like glass, and how is this difference exploited to create the essential electronic component, the diode?
Answer : The fundamental difference lies in the **electron energy band structure** of the materials, specifically the size of the **band gap**. This unique property of semiconductors allows us to precisely ... and off at will is the foundation of all digital logic and the entire modern electronics industry....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

X Full Screen Image
Electrical Engineering

Loading products...

Explain the process and need of crimping of cable joints.
Answer : ### Introduction: What is Crimping? At its core, **crimping** is a process used to join a wire (conductor) to a metal terminal or connector (like a lug, spade, or pin). It involves ... is identical and reliable. | A ratcheting tool ensures the same, correct pressure is applied every single time. |...

Show More
X Full Screen Image
Electrical Engineering

Loading products...

Explain the electrical and thermal properties of transformer oil those make it suitable as an electrical insulating medium.
Answer : ### Introduction: The Dual Role of Transformer Oil Transformer oil, also known as insulating oil, is a highly refined oil that is stable at high temperatures and has excellent ... characteristics are maintained by robust thermal properties over the entire operating life of the transformer....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

Explain the suitability of copper as an electrical conductor with reference to its mechanical and electrical properties.
Answer : ### Introduction Copper is the industry standard for electrical wiring and conductors, and its widespread use is due to an exceptional combination of both electrical and mechanical properties. While ... for decades, making it the superior choice for the vast majority of electrical applications....

Show More
X Full Screen Image
Electrical Engineering

Loading products...

State significance of earthing. Draw and explain pipe earthing. State the values of earth resistances for : (i) Substation (ii) Residential wiring (iii) H.T. Line (iv) L.T. Line
Answer : ### 1. Significance of Earthing Earthing (or grounding) is a fundamental safety measure in any electrical installation. Its primary significance is to protect people, equipment, and property from ... to consumers. [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=3390146307772186646...

Show More
X Full Screen Image
Electrical Engineering

Loading products...

Learn Electrical and Electronics Engineering the easy way at Electrical-Engineering.app – tutorials, tools, calculators, and video lessons for students, professionals, and beginners.

Categories

277 questions

204 answers

23.1k users

...