Sunday, March 29, 2020

Solid State Drives - Unit 4- Synchronous Motor Drive - Worksheet -1



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'Ethical standards and value systems' of Tata group must stay intact: Ratan Tata

Ethical standards and value systems' of Tata group must stay intact: Ratan Tata


Q: Ratan Tata Trust will be completing 125 years of its existence, the first of the trusts. When you look back at the work that the Tata trusts have done what are you feeling?  What ignites this feeling of compassion and giving back?
 I have a great sense of pride that over 125 years, Sir Ratanji Tata left his legacy to philanthropic causes, followed by his brother Sir Dorab Tata when he passed away -- he did exactly the same. Over the years, the Tatas have been structured by the holding company or the proprietors’ ownership being held by two charitable trusts. Over the years there was an increase in the number of charity trusts that were created to work on the disparities that one found in the country, that time a colonial country, and to work for the common good of the common man.
 
This was a different thing, it set up cancer hospitals, schools, institutions of that nature. It did also dealt heavily in terms of individual hardships. So, through the years, the trusts have dealt with individual hardships, they have given scholarships to students. We have had past Presidents of India who had been scholars of those Tata Scholarships. We have created institutions which stand today, like the Indian Institute of Sciences -- the trusts did not set that up, Jamsetji Tata set that up

Q: There is an interesting anecdote about the conversations that Jamsetji Tata had with Swami Vivekananda aboard a ship?

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Ethical issues in Artificial Intelligence.


Ethical issues in Artificial Intelligence
Artificial Intelligence is seen by many as a great transformative tech.  Will AI systems one day drive us around? Do our laundry? Mow our lawn? Raise our kids?  Fight wars? Write these articles? Create political advertisements? These questions make people shift from thinking purely about the functional capabilities to the ethics behind creating such powerful and potentially life-consequential technologies.  As such, it makes sense to spend time considering what we want these systems to do and make sure we address ethical questions now so that we build these systems with the common good of humanity in mind.
Will AI replace human workers?
The most immediate concern for many is that AI-enabled systems will replace workers across a wide range of industries. AI brings mixed emotions and opinions when referenced in the context of jobs. However, it’s becoming increasingly clear that AI is not a job killer, but rather, a job category killer. As has happened with every wave of technology, from the automatic weaving looms of the early industrial revolution to the computers of today we see that jobs are not destroyed, but rather employment shifts from one place to another and entirely new categories of employment are created. We can and should expect the same in the AI-enabled economy. Research and experience is showing that it’s inevitable that AI will replace entire categories of work, especially in transportation, retail, government, professional services employment, and customer service. On the other hand, companies will be freed up to put their human resources to much better, higher value tasks instead of taking orders, fielding simple customer service requests or complaints, or data entry related tasks. 
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Friday, March 27, 2020

Tuesday, March 24, 2020

Monday, March 23, 2020

Professional Ethics in Engineering -UNIT II Engineering Ethics- Part A (Two marks) Questions with answers

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Ethics in Engineering

Ethics in Engineering

One of the most powerful gifts of engineering is how it improves lives. But, in the wrong hands, it can be the opposite. William Marcy, executive director of the Murdough Center for Engineering Professionalism/National Institute for Engineering Ethics, teaches a course on engineering ethics to roughly 600 students per year at Texas Tech University. He advises them to look at all the angles and encourages professional engineers to do the same. “It’s about looking past what people would know about and understanding what your obligation is,” he says.

One example he uses involves a fastening attachment. “Let’s say you project into the future what the consequences might be,” he says. “If an outside inspector said a certain fastening attachment isn’t at the level of quality required, who’s responsible for fixing this? Should the one who did it in 2001 be even though the standards might have been different? If you put something in that no longer is up to code, is your company obligated to say something if that outside inspector was never involved and no one brought it up? Making an ethical decision is thinking about the lifecycle of a project or product or design, not just assuming everything is fine. What may be OK in 2001 may not be fine in 2013 because technology, policies, and design methods can all change.”
An example he had students look at is the Tesla electric car. “It’s very interesting because you would think about the responsibility of the safety of the car—but what about the batteries?” he says. “Some day that car will go to a landfill and how is that battery for the environment? If you think of the life cycle, does the company have a responsibility to properly dispose of the car—should that be part of the offering to a customer when they buy? After all, it may not be a factor for more than a decade.”
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Why Ethical People Make Unethical Choices

Why Ethical People Make Unethical Choices


Most companies have ethics and compliance policies that get reviewed and signed annually by all employees. “Employees are charged with conducting their business affairs in accordance with the highest ethical standards,” reads one such example. “Moral as well as legal obligations will be fulfilled in a manner which will reflect pride on the Company’s name.” Of course, that policy comes directly from Enron.  Clearly it takes more than a compliance policy or Values Statement to sustain a truly ethical workplace.
Corporate ethical failures have become painfully common, and they aren’t cheap.  In the last decade, billions of dollars have been paid in fines by companies charged with ethical breaches. The most recent National Business Ethics Survey indicates progress as leaders make concerted efforts to pay holistic attention to their organization’s systems. But despite progress, 41% of workers reported seeing ethical misconduct in the previous 12 months, and 10% felt organizational pressure to compromise ethical standards. Wells Fargo’s recent debacle cost them $185 million in fines because 5300 employees opened up more than a million fraudulent accounts.  When all is said and done, we’ll likely learn that the choices of those employees resulted from deeply systemic issues.
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How Much Do A Company's Ethics Matter In The Modern Professional Climate?



How Much Do A Company's Ethics Matter In The Modern Professional Climate?


More than ever, a company’s success depends on the talent it’s able to attract, but attracting the best talent is about more than just offering the best salary—or even the best benefits.
Companies may have a lucrative offer for a prospective candidate, and a culture where they’ll feel at home, but how do corporate ethics stack up against those of its competition?
This may not seem like the most important question to ask when you’re trying to hire someone for a position—especially one that might not be directly affected by the actions of your corporation as a whole—but the modern workplace is changing, as are American professionals’ values, and if you want to keep up, you need to know just how significant those ethical values are.

What Qualifies as “Ethics”?
What do I mean by “ethics”? This is a broad category, and subjective in nature, but generally, I’m referring to these areas:
  • Fraud and manipulation. This should be obvious, but ethical companies don’t engage in shady or manipulative financial practices, such as fraud, bribery, or insider trading. The problem here is that individual actions are often associated with the company as a whole, so any individual within your company who behaves in an unethical way could compromise the reputation of your company. Setting strict no-tolerance policies and taking proper disciplinary action can mitigate these effects.
  • Sustainability. Sustainability refers to practices that may be continued indefinitely, usually with respect to the environment. Choosing renewable forms of energy, such as solar and wind, and decreasing pollutants are examples of this. However, sustainability may also refer to the use or consumption of other natural resources, such as water.
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  • https://www.forbes.com/sites/larryalton/2017/09/12/how-much-do-a-companys-ethics-matter-in-the-modern-professional-climate/#b02c2271c790



Thursday, March 19, 2020

Tuesday, March 17, 2020

Solid State Diagrammatic Question


UNIT 1

1.    Draw the essential parts of electrical drive.
2.    Speed torque characteristics – various loads
3.    Multi quadrant dynamics in the speed torque plane.
4.    Modes of operation of an electrical drive

UNIT 2

1.    Draw the operation of single phase fully controlled converter fed separately excited dc motor with neat waveforms.
2.    Draw the regenerative operation of three phases fully controlled rectifier of a separately excited dc motor.
3.    Draw the time ratio control and current limit control
4.    Draw the  operation of  four quadrant  dc chopper drive

UNIT 3

1.     Draw the voltage /frequency control of induction motor drives.
2.     Draw the stator voltage control of induction motor drives.
3.      Drawl the static rotor resistance control in the induction motor
4.     Draw the vector control of induction motor drives
5.    Draw the closed loop speed control of CSI fed induction motor drive.
6.    Draw the closed loop control for VSI Induction motor drives.

UNIT 4
1.    Block diagram the operation of a voltage source inverter fed synchronous motor in the true synchronous mode.
2.    Open loop volts/Hertz control of VSI fed synchronous motor with a neat diagram.
3.    Draw the  concept of self control techniques
4.     Draw the power factor control of synchronous motor.
5.   Draw the constant margin angle control technique  of self controlled  synchronous motor drive employing  load commutated  thyristor inverter 



UNIT 5
1.    Draw the closed loop speed control   for armature  voltage control  and field weakening mode for a dc drive

Fundamentals of Drives - Assignment 5


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Fundamentals of Drives - Assignment 4


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Fundamental of Electric Drive -Assignment 3


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Monday, March 16, 2020

Monday, March 2, 2020

Anna University Revaluation Results Nov/Dec 2019 Declared



 Anna University Revaluation results November /December 2019 Declared.


The Revaluation started  from March 01, 2020 to March 04, 2020.


The results was announced by Anna university Officially on March 10, 2020.


For more info: www.annauniv.edu.

Mesh Analysis Problem - Methods to solve

  In the newly uploaded video, we tackle a comprehensive mesh analysis problem step by step. Starting with the basics, we outline the mesh a...