Sohail Ansari

PSU/M.Tech/Job- Which one to choose?


Guys as u know GATE 2016 results are out and most of u have a confusion what to choose whether go for mtech or job or psu. See it depends on various factor which i am going to explain you. I will talk here by taking General category as a referance.

  1. (Dont want to do Mtech,only for PSU, Fresher)
    If u are Fresher and u have campus placement and your aim to crack GATE exam and u wont able crack this year, then here one factor came in to existance:your financial status..if your financial background is gud and u dont have family pressure then drop one more year and  join full time coaching institute for this. U wont able to crack without coaching (exception is everywhere but u know u r not an exception thats why u wont able to crack ryt). Coaching institute really increase the competition among students in any competitive exam. The students who join coaching they are fully dedicated for the gate and u have to compete with those students so coaching is must. If u will ask me which coaching to join only for GATE then i will recommend you twol coaching. One is ACE Hyderabad (hyderabad centre only)and second is KREATRYX.  I will not recommend made easy if you are preparing only for GATE because they will teach u all the topic which is relevant to GATE, IES, JE, SSE etc. therefore u will have 3 copy of power system 3 copy of machine like this…means u have to study more in one year (less time). so if your aim is only GATE then go for these two institute. If ur aim is GATE+IES+STATE GOVT Exam then go for Made easy. One more thing I m not get paid to any coaching, its my personal opinion.
    Now second point,If your financial status is not good and u have campus placement then go for the job and prepare from there. Any how u have to manage the time because u are lagging financially.
    But What happen if u are financially not good and also u don’t have campus placement??for this case drop a year at home, go to NPTEL sites and start studying the core subject. For EE students i m providing u NPTEL HANDWRITTEN NOTES in my blog which u can download it and start preparing from home only. These all are for fresher. Also u can take the help from our youtube channel which includes nptel videos and lecture made by me. I have delivered the Network Theory Lecture which is strictly related to GATE syllabus. So go through that and learn network theory at free of cost.
    what will do if your rank is below 3000(means u cracked)and financial status is good???.. then also drop a year and prepare with full dedication, as u have already cracked the exam means ur basic concept is clear. Only u lag in your practice. Thats why i wont prefer u to join any coaching.So practice as much as u can and try to give best shot next year. For doubt solving we have one Facebook Group (Learn GATE Free). Join this group and ask any problem related to EE/EC/IN.
    If you want to go for higher studies then prefer only IIT’s and higher NIT’s. you will have a better scope in teaching profession only. For job, don’t prefer M.Tech.
  2. (M.Tech/PSU/Dropper)
    Now if u are a dropper means u already drop a year from any coaching institute still not get good rank (means u are in the range of 1000-3000)then don’t drop one more year. Try to fill other competitive exam form and settle quickly or join M.Tech course from NIT’s and prepare from there.U know why i am telling you not to drop one more year because conceptually u are good enough after studying one year and also you did well but the problem is other students did better than you that’s why you lag this time which is not in your control. so what is the guarantee that next year other students will not run faster than you. you can’t control the speed of other students. However dropping 2-3 years does not reflect bad in psu if u will get below 300 (general) but what happen if you won’t get in to PSU then 3 yrs drop matters for other private job..they will not hire you.Rest choice is yours.

I hope you guys understand very well what to do. I have given all the information. Rest choice is yours. For any query you can comment below.Gud luck.

Memristor (An invention that will change the whole Circuit Theory)


memristor-symbolTill now we are studying about the three element in the circuit theory i.e. Resistor,inductor and capacitor.There is another element proposed by Leon Chua in 1971 known as Memristor (an invention that will change the circuit design in the 21 century). From 2008 HP is doing research on this element.

Memristors are basically a fourth class of electrical circuit, joining the resistor, the capacitor, and the inductor, that exhibit their unique properties primarily at the nanoscale. Theoretically, Memristors, a concatenation of “memory resistors”, are a type of passive circuit elements that maintain a relationship between the time integrals of current and voltage across a two terminal element.
memristorIn this diagram we take voltage current flux and charge along the sides of square and make a relation between adjacent then we came to know the resistance inductance and capacitance have a relationship as shown in figure but one block is empty i.e. there is no any relation between flux and charge. So Leon Chua invented this relation and proposed a new element known as memristor in 1971 and in this way fourth element came in to an existance. It is predicted that 20 element yet to come in future excluding these four element.
memristor

Benefit:

  1. Memristors can retain memory states, and data, in power-off modes which allow the system for quicker boot up since information is not lost when device is turned off.
  2. Use less energy and produce less heat. So heat sink is not required and the size of the machine will get reduced.
  3. Eliminates the need to write computer programs that replicate small parts of the brain.
  4. It has higher density which allow more information to be stored in small chip.
  5. Conventional devices use only 0 and 1. Memrister can use anything between 0 & 1.
  6. It is faster than flash memory (allow digital camera to take pictures with no delay).

Application:

  1. Non-volatile memory applications: Memristors can retain memory states, and data, in power-off modes which allow the system for quicker boot up since information is not lost when device is turned off. There are already 3nm Memristors in fabrication now by HP.
  2. Low-power and remote sensing applications: coupled with memcapacitors and meminductors, the complementary circuits to the memristor which allow for the storage of charge, memristors can possibly allow for nano-scale low power memory and distributed state storage, as a further extension of NVRAM capabilities. These are currently all hypothetical in terms of time to market.
  3. Crossbar Latches as Transistor Replacements :Solid-state memristors replace transistors in future computers, taking up a much smaller area. There are difficulties in this area though, although the benefits these could bring are focusing a lot of money in their development.

Conclusion:
So with the inventions of this element the whole electrical circuit will change in future and library containing lakhs of books will be replaced by one single chip whose dimension will be 1cm square.
Hope u have got some research oriented information. If u have any query then please comment below.
To read about Ultra capcacitor, click here
To know some more article related to EE stream go to EE Article page.

Contact:

 Email id: er.sohail.ansaari@gmail.com
 2007.ansari@gmail.com
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Ultra Capacitor


column2-nrel-diagram_ultracapAn Ultra Capacitor is Electric double-layer capacitors (EDLC), also known as super capacitors, are electrochemical capacitors that have an unusually high energy density when compared to common capacitors, typically several orders of magnitude greater than a high-capacity electrolytic capacitor.
Generally, capacitors are constructed with a dielectric placed between opposed electrodes, functioning as capacitors by accumulating charges in the dielectric material. In a conventional capacitor, energy is stored by the removal of charge carriers, typically electrons from one metal plate and depositing them on another. This charge separation creates a potential between the two plates, which can be harnessed in an external circuit. The total energy stored in this fashion is a combination of the number of charges stored and the potential between the plates. The former is essentially a function of size and the material properties of the plates, while the latter is limited by the dielectric breakdown between the plates. Various materials can be inserted between the plates to allow higher voltages to be stored, leading to higher energy densities for any given size.

Screen Shot 2015-08-17 at 10.38.34 PMUltra Capacitors do not have any dielectrics in general, but rather utilize the phenomena typically referred to as the electric double layer. In the double layer, the effective thickness of the “dielectric” is exceedingly thin, and because of the porous nature of the carbon the surface area is extremely high, which translates to a very high capacitance. Generally, when two different phases come in contact with each other, positive and negative charges are set in array at the boundary. At every interface an array of charged particles and induced charges exist. This array is known as Electric Double Layer. The high capacitance of an Ultra capacitor arises from the charge stored at the interface by changing electric field between anode and cathodes.

Advantages:
• High energy storage. Compared to conventional capacitor technologies, EDLCs possesses orders of magnitude higher energy density. This is a result of using a porous activated carbon electrode to achieve a high surface area.
• Low Equivalent Series Resistance (ESR). Compared to batteries, EDLCs have a low internal resistance, hence providing high power density capability. • Low Temperature performance. Tecate Group PowerBurst® products, with their use of patented technology, are capable of delivering energy down to -40°C with minimal effect on efficiency.
• Fast charge/discharge. Since EDLCs achieve charging and discharging through the absorption and release of ions and coupled with its low ESR, high current charging and discharging is achievable without any damage to the parts.

Disadvantages:
• Low per cell voltage. EDLC cells have a typical voltage of 2.7V. Since, for most applications a higher voltage is needed, the cells have to be connected in series.
• Cannot be used in AC and high frequency circuits. Because of their time constant EDLCs are not suitable for use in AC or high frequency circuits.

Applications:

  1. Applications requiring a short duration power boost.
  2. In Low power,Capacitors are extensively used as power back-up for memory functions in a wide range of consumer products such as mobile phones, laptops and radio tuners.
  3. Super capacitors are also used to provide fast acting short term power back up for UPS applications. By combining a capacitor with a battery-based uninterruptible power supply system, the life of the batteries can be extended. The batteries provide power only during the longer interruptions, reducing the peak loads on the battery and permitting the use of smaller batteries.
  4. It is also used for energy storage for solar panels, and motor starters.
  5. Using super capacitors in EVs and HEVs to facilitate regenerative braking can add 15% to 25% to the range of the vehicle. At the same time, super capacitors can provide an effective short duration peak power boost allowing the prime battery to be downsized.

For any query please leave a comment below.
To know some more article related to EE stream go to EE Article page.

Contact:

 Email id: er.sohail.ansaari@gmail.com
 2007.ansari@gmail.com
 FB id : https://www.facebook.com/sohail.ansari.itm
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PSU Registration Link Through GATE 2016


psu-mainCheck the PSU Recruitment Through GATE 2016  below and register yourself by clicking the link provided for each of the respective PSU.

  1. Power Grid Corporation Limited (PGCIL).
    Start Date: 15 Jan 2016
    Last Date : 29 Feb 2016
    To Apply, Click here
  2. National Hydro Power Corporation (NHPC).
    Start Date: 01 Jan 2016
    Last Date : 01 Feb 2016
    To Apply, Click here
  3. Bharat Broadband Network Limited (BBNL)
    (Not came yet.. will update soon)
  4. Bharat Petroleum Corporation Limited (BPCL).
    Start Date: 29 Dec 2015
    Last Date : 30 Jan 2016.
    To Apply, Click here
  5. CEL Solar.
    Last Date : 29 Jan 2016
    To Apply, Click here
  6. Hindustan Petroleum Corporation Limited (HPCL).
    Last Date : 02 Feb 2016
    To Apply, Click here
  7. Indian Oil Corporation Limited (IOCL).
    Last Date : 07 Feb 2016
    To Apply, Click here
  8. Odisha Power Generation (OPGC).
    Not came yet… will update soon
    Note : Remaining PSU have not opened till 02 jan 2016. I will update when it will be open. So stay tuned with the blog. For further queries, comment in the comment section given below.
Email id: er.sohail.ansaari@gmail.com
 2007.ansari@gmail.com
 FB id : https://www.facebook.com/sohail.ansari.itm
 Linkedin id : http://in.linkedin.com/pub/sohail-ansari/a6/64/7a5/

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