Subhajit Mandal_ EMD.pptx
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This document contains information about transformers. It discusses the different types of transformer construction including core-type and shell-type. It also describes the different types of losses in transformers including core losses from hysteresis and eddy currents, and copper losses from winding resistance. The document provides equations for transformer efficiency calculations and defines different types of efficiencies such as commercial and all-day efficiencies.
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TRANSFORMERS and LOSSES
Losses in transformer
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Separation of iron loss
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Transformer is a static device, hence mechanical losses (like friction loss) are absent in it. A transformer only consists of electrical losses (iron losses and copper losses).
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The key components are the primary and secondary coils, the magnetic core, and insulation between the coils. The core is made of thin iron laminations to reduce eddy currents. Copper losses from resistance heating vary with load current, while core losses from hysteresis are constant.
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Core is made by iron like CRGO so called iron loss.
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This document provides an overview of various electrical machines, including transformers, DC machines, induction motors, and universal motors. It discusses the basics of transformer operation, including the principles of electromagnetic induction, transformer construction, EMF equations, losses, efficiency, and applications. It also briefly outlines the construction, principles of operation, back EMF, voltage/power/torque characteristics, and applications of DC machines, as well as the construction, principles, and applications of three-phase induction motors, single-phase induction motors, and universal motors. The document provides details on transformer components and losses, transformation ratios, auto-transformers, and instrument transformers.
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A transformer transfers electrical energy between circuits through electromagnetic induction. It consists of two coils wound around an iron core. An alternating current applied to one coil induces a voltage in the other coil.
The key components are the primary and secondary coils, the magnetic core, and insulation between the coils. The core is made of thin iron laminations to reduce eddy currents. Copper losses from resistance heating vary with load current, while core losses from hysteresis are constant.
Efficiency is maximized when copper and core losses are equal. Maximum efficiency occurs at a load that is the ratio of core to copper losses, and is independent of power factor. Voltage regulation is the change in output voltage from no-load to full
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颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(爱大毕业证书)爱荷华大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(爱大毕业证书)爱荷华大学毕业证【微信：741003700 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
LLM Fine Tuning with QLoRA Cassandra Lunch 4, presented by Anant
Slides for the 4th Presentation on LLM Fine-Tuning with QLoRA Presented by Anant, featuring DataStax Astra
Null Bangalore | Pentesters Approach to AWS IAM
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
Design and optimization of ion propulsion drone
Electric propulsion technology is widely used in many kinds of vehicles in recent years, and aircrafts are no exception. Technically, UAVs are electrically propelled but tend to produce a significant amount of noise and vibrations. Ion propulsion technology for drones is a potential solution to this problem. Ion propulsion technology is proven to be feasible in the earth’s atmosphere. The study presented in this article shows the design of EHD thrusters and power supply for ion propulsion drones along with performance optimization of high-voltage power supply for endurance in earth’s atmosphere.
一比一原版(CalArts毕业证)加利福尼亚艺术学院毕业证如何办理
CalArts毕业证学历书【微信95270640】CalArts毕业证’圣力嘉学院毕业证《Q微信95270640》办理CalArts毕业证√文凭学历制作{CalArts文凭}购买学历学位证书本科硕士,CalArts毕业证学历学位证【实体公司】办毕业证、成绩单、学历认证、学位证、文凭认证、办留信网认证、（网上可查，实体公司，专业可靠）
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1.高仿业务:【本科硕士】毕业证,成绩单（GPA修改）,学历认证（教育部认证）,大学Offer,,ID,留信认证,使馆认证,雅思,语言证书等高仿类证书；
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办理加利福尼亚艺术学院加利福尼亚艺术学院毕业证文凭证书流程：
1客户提供办理信息：姓名生日专业学位毕业时间等（如信息不确定可以咨询顾问：我们有专业老师帮你查询）；
2开始安排制作毕业证成绩单电子图；
3毕业证成绩单电子版做好以后发送给您确认；
4毕业证成绩单电子版您确认信息无误之后安排制作成品；
5成品做好拍照或者视频给您确认；
6快递给客户（国内顺丰国外DHLUPS等快读邮寄）
-办理真实使馆公证（即留学回国人员证明）
-办理各国各大学文凭（世界名校一对一专业服务,可全程监控跟踪进度）
-全套服务：毕业证成绩单真实使馆公证真实教育部认证。让您回国发展信心十足！
（详情请加一下 文凭顾问+微信:95270640）欢迎咨询！子小伍玩小伍比山娃小一岁虎头虎脑的很霸气父亲让山娃跟小伍去夏令营听课山娃很高兴夏令营就设在附近一所小学山娃发现那所小学比自己的学校更大更美操场上还铺有塑胶跑道呢里面很多小朋友一班一班的快快乐乐原来城里娃都藏这儿来了怪不得平时见不到他们山娃恍然大悟起来吹拉弹唱琴棋书画山娃都不懂却什么都想学山娃怨自己太笨什么都不会斟酌再三山娃终于选定了学美术当听说每月要交元时父亲犹豫了山娃也说爸算了吧咱学校一学期才转
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
Sinan from the Delivery Hero mobile infrastructure engineering team shares a deep dive into performance acceleration with Gradle build cache optimizations. Sinan shares their journey into solving complex build-cache problems that affect Gradle builds. By understanding the challenges and solutions found in our journey, we aim to demonstrate the possibilities for faster builds. The case study reveals how overlapping outputs and cache misconfigurations led to significant increases in build times, especially as the project scaled up with numerous modules using Paparazzi tests. The journey from diagnosing to defeating cache issues offers invaluable lessons on maintaining cache integrity without sacrificing functionality.
Object Oriented Analysis and Design - OOAD
This ppt gives detailed description of Object Oriented Analysis and design.
NATURAL DEEP EUTECTIC SOLVENTS AS ANTI-FREEZING AGENT
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Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
This document serves as a comprehensive step-by-step guide on how to effectively use PyCharm for remote debugging of the Windows Subsystem for Linux (WSL) on a local Windows machine. It meticulously outlines several critical steps in the process, starting with the crucial task of enabling permissions, followed by the installation and configuration of WSL.
The guide then proceeds to explain how to set up the SSH service within the WSL environment, an integral part of the process. Alongside this, it also provides detailed instructions on how to modify the inbound rules of the Windows firewall to facilitate the process, ensuring that there are no connectivity issues that could potentially hinder the debugging process.
The document further emphasizes on the importance of checking the connection between the Windows and WSL environments, providing instructions on how to ensure that the connection is optimal and ready for remote debugging.
It also offers an in-depth guide on how to configure the WSL interpreter and files within the PyCharm environment. This is essential for ensuring that the debugging process is set up correctly and that the program can be run effectively within the WSL terminal.
Additionally, the document provides guidance on how to set up breakpoints for debugging, a fundamental aspect of the debugging process which allows the developer to stop the execution of their code at certain points and inspect their program at those stages.
Finally, the document concludes by providing a link to a reference blog. This blog offers additional information and guidance on configuring the remote Python interpreter in PyCharm, providing the reader with a well-rounded understanding of the process.
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Subhajit Mandal_ EMD.pptx
- 1. NAME : SUBHAJIT MANDAL DEPT : EEE SEM : 6TH YEAR : 3RD ROLL NUMBER : 15602821032 REGISTRATION NUMBER : 211560102820029 INSTITUTE : PAILAN COLLEGE OF MANAGEMENT & TECHNOLOGY SUBJECT : EMD GUIDE BY : BIDROHI BHATTACHARJEE SUBJECT CODE : PE-EEE-601B
- 2. TRANSFORMER A transformer is a device that transfers electric energy from one alternating current circuit to one or more other circuits, either increasing (stepping up) or reducing (stepping down) the voltage. Different types of loss of the T/F : There are two types of loss , one is core loss and another is copper loss TRANSFORMER : Step upTransformer Step downTransformer
- 3. Losses Of the T/F Iron loss / Magnetic loss / Fixed loss / Core loss Copper loss / Variable loss / Winding loss Eddy current loss Magnetic Hysteresis loss
- 4. “ ” Construction of the Transformation : THERE ARE TWO GENERAL TYPES OF TRANSFORMER CONSTRUCTION: CORE-TYPE AND SHELL-TYPE. SINGLE-PHASE CORE-TYPE CONSTRUCTION CONSISTS OF A CORE THAT PROVIDES A SINGLE-PATH MAGNETIC CIRCUIT. EACH LEG OF THE CORE HAS OVERLAPPED HIGH AND LOW VOLTAGE WINDINGS. CORE TYPE TRANSFORMER : IN CORE TYPE CONSTRUCTION OF THE TRANSFORMER, THE MAGNETIC CORE CONSISTS OF TWO VERTICAL LAGS CALLED LIMBS AND TWO HORIZONTAL SECTIONS CALLED YOKES. IN ORDER TO REDUCE THE LEAKAGE FLUX TO ITS MINIMUM VALUE, HALF OF EACH WINDING IS PLACED ON EACH LAG OF THE CORE. SHELL TYPE TRANSFORMER : A TYPE OF TRANSFORMER IN WHICH THE MAGNETIC CIRCUIT CONSISTS OF ONE CENTRAL LIMB AND TWO OUTER LIMBS, AND BOTH PRIMARY AND SECONDARY WINDINGS ARE PLACED ON THE CENTRAL LIMB IS CALLED A SHELL TYPE TRANSFORMER
- 5. CORE LOSS : THE TERM CORE LOSS RELATES TO THE TOTAL ENERGY LOST THROUGH THE GENERATION OF HEAT. CORE LOSS IS THE LOSS THAT OCCURS IN A MAGNETIC CORE DUE TO ALTERNATING MAGNETIZATION, WHICH IS THE SUM OF THE HYSTERESIS LOSS AND THE EDDY CURRENT LOSS. COPPER LOSS : IF WE CONSIDER THE WINDING RESISTANCE IS R , WHERE I IS THE CURRENT PASSING THROUGH THE WINDING THEN THE FORMULA IS I^2R . COPPER LOSS IS ALSO VARIABLE LOSS BECAUSE COPPER LOSS CHANGES WITH THE LOAD . NS / NP = ES / EP = IP / IS = K 4% SILICON + STEEL = HYSTERESIS CO-EFFICIENT 0.001 Ns = Number of turns of the Secondary Winding Np = Number of turns of the Secondary winding Es = EMF of the Secondary winding Ep = EMF of the Primary winding Ip = Current of the Primary winding Is = Current of the Secondary winding
- 6. EFFICIENCY : EFFICIENCY = OUTPUT / INPUT = OUTPUT / OUTPUT + LOSS = 1 / LOSS EFFICIENCY = 1 / LOSS , :. EFFICIENCY PROPORTIONAL TO 1 / LOSS . Efficiency Output = Constant Efficiency of theT/F Commercial efficiency / Ordinary efficiency All day efficiency
- 7. EFFICIENCY (COMMERCIAL ) = × 100 % EFFICIENCY (COMMERCIAL ) = EFFICIENCY (COMMERCIAL ) = Output power in KW on Watt Input power in KW on Watt Output power in KW on Watt ( Output power in KW on Watt + Losses ) × 100 % O/p power in KW on Watt ( O/p power in KW on Watt + Losses ) × 100 %
- 8. THANK YOU EFFICIENCY ( ALL DAY ) = ×100 % EFFICIENCY ( ALL DAY ) = ×100 % EFFICIENCY ( ALL DAY ) = ×100 % Output (power × time) in KW on Watt hour Input (power × time) in KW on Watt hour Output Energy in KW on Watt hour Input Energy in KW on Watt hour Output Energy in KW on Watt hour ( Output Energy in KW on Watt hour + Losses )