Tania Alam

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Tania Alam last won the day on December 22 2016

Tania Alam had the most liked content!

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About Tania Alam

  • Rank
    Member
  • Birthday 05/15/1996

Contact Methods

  • Linkedin URL
    http://linkedin.com/in/alamtania

Profile Information

  • Gender
    Female
  • Location
    India
  • Designation / Job Title
    3rd year Mechanical Engineering Student
  • Highest Qualification
    10+2
  • Year of completition
    2014
  • Engineering Qualification
    B. Tech ( Mechanical Engineering )
  • Year of completition
    2018
  • Name of Institute
    Techno India University

More Information

  • Project Undertaken
    Here are few projects I worked on in my college till now.

    • “The Doodle Bot” , a bot that can sketch mutually perpendicular lines by moving to and fro and sideways.( 2014)
    • “The Death Slide”, a horizontal rope traversing robot with a pick-up mechanism. (2015)
    • “BOT-Fly”, a small bee-like robot with flying mechanism (2015)
    • “Ride-On”, a type of hover board acting on differential drive mechanism to move on roads. (2016)
  • Achievement /recognition/ Certifications
    Achievements :
    1. Educational :
    • Within Top 10 students of GIFT 2016 organised by Gateforum.
    • Certificate for Star (above 80%) in Higher Secondary Examination 2014
    2. Technical :
    • Certificate of Achievement for securing the 2nd position in a technical article presentation event organised by SPIE and Techno India, Saltlake.
    • Certificate of Excellence for securing the 2nd position in a Web development event organised by Techshu, UEM and IEM, Kolkata.
    3. Managerial :
    • Certificate of Achievement for a scholarship competition organised by Estonian Business School and Sqore ( Rank 66 on 671)
    4. Cultural :
    • Certificate of Excellence for securing the 1st position (for Photography) and 5th position (for Painting) in a competition organised by Tallenge.

    Recognitions:
    1. Educational :
    • Participated in a model representation event organised by UEM and IEM, Kolkata (2015).
    • Participated in a project view event organised by Techno India, Saltlake (2015).
    • Participated in a model representation event organised by GoHop, UEM and IEM, Kolkata (2016).
    • Participated in an aptitude event organised by St. Thomas College of Engineering and Technology and Cognizant (2016).
    • Participated in a workshop on Internship Preparation organised by Internshala.
    2. Technical :
    • Participated in an educational gaming and coding contest organised by Microsoft Research India.
    • Participated in a workshop on “Webbing: Internet of Things” organised by Codeblix.
    • Participated in a workshop on Web Development organised by Internshala.
    3. Managerial :
    • Participated in an entrepreneurial seminar organised by Heritage Institute of Technology.
    • Co-ordinated an android workshop organised by Webtek Labs, IBM Business Partner.
    • Served as a campus ambassador for the Mining Engineering fest of IIT Kharagpur.
    • Served as a campus representative for the technical fest of Techno India, Saltlake.
    • Volunteered in a contest organised by Tallenge.
    • Served as a campus ambassador for the Annual International Business Summit organised by IIM Calcutta.
    4. Cultural :
    • Rabindra Sangeet (Vocal) – First division from Pracheen Kala Kendra.
    • Painting - First division from Pracheen Kala Kendra.

    Certifications :
    1. Mechanical :
    • CNC Programming with G code for Beginners (Udemy)
    • Basic Physics (Open2Study and Swinburne University of Technology)
    • Astronomy: Discovering the Universe (Open2Study and Curtin University)
    2. Robotics :
    • Mobile Robotics (Open2Study and Swinburne University of Technology)
    • EV3 Basic: Getting Started (Udemy)
    3. Coding :
    • Learn HTML5 Programming for Beginners (Eduonix)
    4. Soft Skills :
    • "Writing in the Sciences" with distinction (Stanford Online)
    • Microsoft Excel 2010 (Alison)
    • Helping writers to write and keep writing (Udemy)

Recent Profile Visitors

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  1. In simple words, head is a representation of the energy contained in a fluid, it may be potential or kinetic. If you want a detailed explanation you can read the answers on Quora to the question "What is head in pumps? What is the physical meaning of head in pressure head, velocity head, kinetic head, etc.?" Although the answers are written for pumps, the explanations are quite well-written and valid for turbines as well.
  2. Seminars have always been an important aspect of education. It's an opportunity to either gain knowledge on an unknown topic or develop ideas regarding something you already know.It's a place where you meet highly skilled persons and get to know their recent researches.You should attend at least a couple of seminars annually to keep yourself updated about the advancements taking place in your field. I've seen many people who keep avoiding seminars, although interested, just because they have never attended a seminar before. If this is your case, then I've only one thing to say "There's always a first time." Until and unless you attend a seminar, how can you overcome the fright? Attending a seminar for the first time does not mean that you'll feel low or less confident than others. Here are a few tips that can make you seminar-ready. Here are a few tips that can help you get through a seminar and actually learn from it. 1. Know the Topic Usually there are no prerequisites to attend a seminar but ideally you should know something about the seminar you're going to attend.First know the topic, yes the topic. I've seen a lot of people coming for a seminar and asking what the topic is! Know the meaning of each term related to the topic, like definitions, some dates, names of some important people in that field, etc. If you still have some time and energy left, know who the speaker is and his background. You can look for his area of study, some research works, etc. So now that you know what you need to know, I'll suggest you some ways by which you can know it.( I just hope I didn't confuse you. Oops, I did! ) Now-a-days you can literally find everything on the web,sometimes even the details you need about the speaker from his research works. Now that you have the basic knowledge of the topic, you can consult the faculties if you feel like. You can find lot of details online but only after talking to the profs you get to know which information is relevant for the seminar you're going to attend.Knowing more never goes in vain, but off course you wouldn't like to clog your mind with so many points. If you feel it hard to remember all the points, you can make short notes and take it with you to the seminar. Just make sure your focus is on the speaker as soon as the seminar starts and not on these notes. 2. A proper attire it's never mandatory to wear formals for attending a seminar but avoid fancy dresses. Remember you're in the professional world, dress up like that. If you like make-ups go for it, but keep it light and simple. Just make sure you're comfortable with your look. In most of the cases, dressing up properly makes people feel confident. 3. Non-verbal communication People can communicate a lot of things even without uttering a single word, through their body gestures, eye movement, etc. ere lies the importance of non-verbal communication. You can put a smile on you face just to show that you're there to learn and not to oppose the idea the speaker is going to present. Nodding your head sometimes during the speech can also communicate a lot about you. It means you're listening and understanding the topic as well. 4. Be attentive It's not important to understand each and every part of the speech but at least you should get the essence of the speech. Just remember that the seminars are designed to provide you with a usable content on a variety of relevant subjects and keep you updated with the latest advancements in your field. So, try to gain as much knowledge as possible. 5. Asking Questions It's the best way to get you ideas about the topic reviewed by an experienced person, you'll get to know if you're on the right track. Speakers also encourage questions and it's a way of learning on their part too. But whenever you ask a question, make sure you know exactly what you need to know clearly. Frame the question in your mind first, you certainly don't want to stumble while asking. At this moment, I certainly don't want to demotivate you, just remember that silence is better than asking "silly questions". So the next time you're going for a seminar, you already now what to do and how to do! Happy "Seminar-ing" !
  3. I'm sorry I just forgot to mention that I've already corrected the mistake mentioned by @Alban Kronenberger. Thanks for pointing it out. P.S. ~ If you find any such mistakes, comment on the post, even if you're not fully sure. I'll verify it and edit it.
  4. Dear @Alban Kronenberger, Thank you so much for pointing out the mistake. I actually interchanged the examples of High head and medium head turbines, while formatting. And it's good to see people, actually reading your post so carefully and providing you feedback. Regards, Tania
  5. Thank you for the suggestion, I'll start working on it soon.
  6. Thank you Sir. The comments do inspire me to keep writing, and I wait for yours.
  7. Thank you so much Sir for your comment. Since you're an experienced person, I'll expect you to help me in editing all the blogs I write. It'll be helpful for me as well as others too. [ I made the classification just for the beginners like me, so that they get a basic idea.]
  8. What is a BUE? BUEs are built-up edges formed due to the accumulation of work-piece material against the rake face of the tool. How are BUE formed? During machining, the upper layer of the work-piece metal experiences a large shear force as it comes in contact with the tool-tip and an amount of the metal gets welded to the tool-tip. This is due to work hardening of the metal layer. The metal adhered to the tool becomes so hard that it is difficult to remove. Why are BUE formed? BUE formation is common under a few conditions which are : Low cutting speed Work hardeneability of work piece material High feed rate Low rake angle Lack of cutting fluid Large depth of cut In which materials is it observed easily? BUE formation is usually noticed in alloys such as Steel rather in pure metals.It is also observed in soft materials like soft pure Alumunium, hot rolled low carbon steel. What are the effects of BUE? There are a few basic effects caused by the BUE formation like : Change in tool geometry Change in rake steepness Reduction in contact area between the chip and the cutting tool. What are the advantages of BUE? BUE formation can have a few advantages on the cutting tool and ease of machining like : Slight increase in tool life Reduction in power demand. What are the disadvantages of BUE? The count of disadvantages is actually more than the advantages it has on the machining process. Poor surface finish Problems in dimensional control of the process Leads to flank wear (damaging the flank face) How can the BUE formation be prevented? BUE formation is a common machining problem but there's a soluion to every problem.Here are a few prevention steps to reduce BUE formation Increasing cutting speed Use of cemented carbide tool in place of HSS tool Introduction of free machining materials ( loaded or resulphurized steel) Application of an appropriate lubricant at low cutting speed P.S. - Suggestions are always welcomed.
  9. When two links (or elements) in a machine are in contact with each other, they form a pair. When the relative motion between these two links is completely or partially constrained, then the links are said to form a kinematic pair.In simple words, a kinematic pair or simply a pair is a joint of two links having relative motion between them. Kinematic pairs can be classified on the basis of: 1) Nature of contact between the pairing elements (a) Lower pair – surface or area contact between the members of the pair There are 6 types of lower pairs I. Revolute pair (R)II. Prismatic pair (P)III. Screw or helix pair (H)IV. Cylindrical pair (C)V. Spherical or globular pair (G)VI. Planar pair or Ebony (E) (b) Higher pair – point or line contact between the members of the pair Examples of line contact – I. Tooth gears II. Ball and roller bearings III. Wheel rolling on a surface Examples of point contact – I. Cam and follower pair (c) Wrapping pair – similar to higher pair, but there are multiple point contacts, one body wraps over the other, comprises of belts, chains, etc. Examples – A belt driven pulley 2) Nature of mechanical constraint (a) Form or Self closed pair – the contact between the two bodies is maintained by geometric formExamples – Screw pair (lower pair) (b) Forced closed pair – the contact between the two bodies is maintained by application of external forceExamples – Ball and roller bearings (c) Open pair – links are not help together mechanically, contact due to the force gravity or some spring action.Examples – Cam and follower pair 3) Nature of relative motion of one link to the other in the pair (a) Sliding pair – sliding motionExamples – Rectangular rod in a rectangular hole in a prism (b) Turning pair – turning or revolving motionExamples – Circular shaft revolving inside a bearing (c) Rolling pair – rolling motionExamples – Ball and roller bearings (d) Screw or Helical pair – both turning and sliding motionExamples – Lead screw and nut of a lathe (e) Spherical pair – one link is in the form of a sphere and can turn inside a fixed linkExamples – Ball and socket joint P.S. ~ Suggestions are always welcomed.
  10. Turbines are machines which convert fluid energy to mechanical energy. When the fluid used is water, they are called hydraulic turbines. Hydraulic turbines may be classified on the basis of four characteristics : On the basis of the type of energy at the turbine inlet Impulse turbine total head of the incoming fluid is converted in to a large velocity head at the exit of the supply nozzle ( entire available energy of the water is converted in to kinetic energy.) water entering the runner of a reaction turbine has only kinetic energy the rotation of runner or rotor (rotating part of the turbine) is due to impulse action Flow regulation is possible without loss Unit is installed above the tailrace Casing has no hydraulic function to perform, because the jet is unconfined and is at atmospheric pressure. Thus, casing serves only to prevent splashing of water. It is not essential that the wheel should run full and air has free access to the buckets. eg - Pelton wheel turbine ( efficient with a large head and lower flow rate.) Reaction or Pressure turbine the penstock pipe feeds water to a row of fixed blades through casing that convert a part of the pressure energy into kinetic energy before water enters the runner water entering the runner of a reaction turbine has both pressure energy and kinetic energy the rotation of runner or rotor (rotating part of the turbine) is partly due to impulse action and partly due to change in pressure over the runner blades Water leaving the turbine is still left with some energy (pressure energy and kinetic energy) It is not possible to regulate the flow without loss Unit is entirely submerged in water below the tailrace Casing is absolutely necessary, because the pressure at inlet to the turbine is much higher than the pressure at outlet. Unit has to be sealed from atmospheric pressure. Water completely fills the vane passage. eg - Francis and Kaplan turbines ( efficient with medium to low heads and high flow rates ) On the basis of the direction of flow through the runner Tangential flow turbine Direction of flow is along the tangent of the runner eg - Pelton wheel turbine. Radial flow turbine Direction of flow is in radial direction radially inwards or centripetal type, eg- old Francis turbine radially outwards or centrifugal type, eg -Fourneyron turbine Axial flow turbine Direction of flow is parallel to that of the axis of rotation of the runner the shaft of the turbine is vertical, lower end of the shaft is made larger which is known as hub (acts as runner) eg - Propeller turbine ( vanes are fixed to the hub and they are not adjustable ) Kaplan turbine (vanes on hub are adjustable ) Mixed flow turbine Water flows through the runner in the radial direction but leaves in a direction parallel to the axis of rotation of the runner eg- Modern Francis turbine. On the basis of the head at the turbine inlet High head turbine net head varies from 150m to 2000m or even more small quantity of water required eg -: Pelton wheel turbine. Medium head turbine net head varies from 30m to 150m moderate quantity of water required eg -: Francis turbine. Low head turbine net head less than 30m large quantity of water required eg -: Kaplan turbine. On the basis of the specific speed of the turbine Before getting into this type, one should know what the specific speed of a turbine is. It defined as, the speed of a geometrically similar turbine that would develop unit power when working under a unit head (1m head). Low specific speed turbine specific speed is less than 50. (varying from 10 to 35 for single jet and up to 50 for double jet ) eg -: Pelton wheel turbine. Medium specific speed turbine specific speed varies from 50 to 250 eg -: Francis turbine High specific speed turbine specific speed more than 250 eg -: Kaplan turbine References : 1. Course contents on NPTEL website 2. A textbook of Fluid Mechanics and HydraulicMachines - R.K. Bansal 3. Fluid Mechanics: Including Hydraulic Machines - A.K. Jain 7 hours, 59 minutes ago