Engineering Graphics

Dear Students, Good Morning and a warm welcome to today's class. It feels really nice to meet up for yet another class this morning.    We will continue with projections of Solids or 3 D figures  Exercise - Projection of solids - 6 Q 1. Draw the projections (FV & TV) of a hexagonal prism of  base edge  30 mm and height 60 mm having its axis at angle of 60 degress to the HP.   Q 2. Draw the projections (FV & TV) of a pentagonal prism of  base edge  30 mm and height 60 mm having its axis at angle of 45 degress to the HP.   Q 3. Draw the projections (FV & TV) of a hexagonal pyramid of  base edge  30 mm and height 60 mm having its axis at angle of 60 degress to the HP.   Q 4. Draw the projections (FV & TV) of a pentagonal pyramid of  base edge  30 mm and height 60 mm having its axis at angle of 45 degress to the HP.  

Dear Students, Greetings and a warm welcome to all of you. The topic that we will deliberate upon today is  "Fairness and Impartiality" “In case of dissension, never dare to judge till you've heard the other side.” ―  Euripides,  The Children of Herakles Why is it important to be fair and impartial ? One of the greatest qualities of a people's person is that he or she is fiercely fair and impartial in approach. The person does not only seem fair or impartial but the same is reflected in his actions and deeds too. At no point in time he or she is found to be unfair, for fairness wins the heart of friends and foes equally. For a person to be admired, loved and respected, it is really important to be free of nepotism or favouritism. If the person is seen as partial and unfair, people will lose their faith and confidence in him or her and soon the person will get abondoned by followers.    Let us consider, the example of an umpire in the game of cricket or hockey or any o

Assignment 2 - Bushed Bearing Disassembly Q 1. Draw the FV, TV and LHSV of the  Body  (disassembly)   Q 2. Draw right half in section of the  Body Q 3. Draw full section of the  Body . Q 4. Draw the FV, TV and LHSV of the  Bush  (disassembly) Q 5. Draw right half in section of the  Bush Q 6. Draw full section of the  Bush . Assembly Q 1. Draw the FV, TV and LHSV of the  Assembly     Q 2. Draw right half in section of the  Assembly Q 3. Draw full section of the  Assembly .

Dear Students, Greetings and a warm welcome to all of you. The topic that we will deliberate upon today is "Motivation" “It’s hard to beat a person who never gives up.” – Babe Ruth Who does not face adversity? All of us face adversity at some point in time. Not just once but over and over without end since it is the reality of life. No two days are the same and even reasons change from summer to spring to winters to autumn. In similar manner good days do not last forever, these come to a close and that when bad days make an entry.  Also, one cannot be working at top of his or her eficiency all through the day. There are hours when we feel tired or weak, as if there is no strength left within us to carry forward for even an hour.   The environment throws unexpected news at us that is both favourable as well as unfavourable. How will you brave through the unfavourable events that come to perch upon you and you still remain steady on the path of higher achievement? What is it th

Dear Students, Good Morning and a warm welcome to today's class. It feels really nice to meet up for yet another class this morning.    We will continue with projections of Solids or 3 D figures  Exercise - Projection of solids - 5 Cylinder and Cone Q 1. Draw the projections (FV & TV) of a Cone of  base diameter  40 mm and height 60 mm having its axis at angle of 60 degress to the HP.   Q 2. Draw the projections of a cylinder of  base diameter  40 mm and height 70 mm  having its axis inclined to the HP at 45 degrees.  Q 3. Draw the projections (FV & TV) of a Cone of  base diameter  50 mm and height 70 mm having its axis at angle of 60 degress to the VP.   Q 4. Draw the projections of a cylinder of  base diameter  50 mm and height 70 mm  having its axis inclined to the VP at 45 degrees. 

Good Morning Dear Students, Today we will understand another trait of personality called as 'Responsiblity' . Theme for the day is RESPONSIBILITY What does responsibilty mean? I am sure that you all are aware of the meaning of the term 'Responsibility'. What you might not be aware of, is all the aspects about responsibility that determine a robust personality trait. Responsibility comprises at least three sub parts as mentioned below.    1. Assuming or taking responsibilty,  2. Behaving in a responsible manner and  3. Accepting responsibilty   How can the above three sub parts make one, a person of character and personality? 1. Assuming or taking responsibility There are numerous tasks that need to be implemented as well as completed so that these can bring pleasing intended results to people. For example, studying to the best of your ability, fetching commodities like groceries or milk from the market for the household, teaching your younger brother or sister etc. The

Assignment 1 - Open Bearing Disassembly Q 1. Draw the FV, TV and LHSV of the Body (disassembly)   Q 2. Draw right half in section of the Body Q 3. Draw full section of the Body . Q 4. Draw the FV, TV and LHSV of the Bush (disassembly) Q 5. Draw right half in section of the Bush Q 6. Draw full section of the Bush . Assembly Q 1. Draw the FV, TV and LHSV of the Open Bearing Assembly     Q 2. Draw right half in section of the Open Bearing Assembly Q 3. Draw full section of the Open Bearing Assembly .

Dear Students, Good Morning and a warm welcome to today's class. It feels really nice to meet up for yet another class this morning.    We will continue with projections of Solids or 3 D figures  Exercise - Projection of solids - 4 Axis inclined to the VP. Q 1. Draw the projections (FV & TV) of a square prism of  base side  30 mm and height 60 mm having its axis at angle of 45 degress to the VP. One of the faces of the prism is in the VP and two of its edges are parallel to the HP.   Q 2. Draw the projections of a triangular prism of  base side  40 mm and height 70 mm  having its axis inclined to the VP at 45 degrees. One of the triangular faces of the prism is 10 mm away from the VP and parallel to it. Also one of the face edges is perpendicular to the HP.    Q 3. Draw the projections of a hexagonal prism of  base edge  40 mm and height 70 mm  having its axis inclined to the VP at 60 degrees.  The prism is placed in a way that two of its face edges are perpendicular to the HP.

Dear Students, Greetings and a warm welcome to all of you. The topic that we will deliberate upon today is something that is quite relevant in the present times when all of us are house quaratined in response to the COVID 19 scare. Just think about what is it that we have enough of, in the present and did not have much of it the recent past?      Is it not TIME? Yes it is. Presently, we spend all the time at our homes and do not venture outside even for a second. Why is it so? It is becasue we want to be safe and secure as well as out of harm's way. By staying home, we can save ourselves and our family members from contracting the disease, that has no proven cure as of now. This is the reason why the situation is so serious and calls for due care and following all the precautionary steps to ward of threat to our lives. By staying at home we will be able to break the chain of the deadly virus and stop it from spreading. This is our only tool with which to fight this menace. In recen

Dear Students, Good Morning and a warm welcome to today's class. It feels really nice to meet up for yet another class this morning.    We will continue with projections of Solids or 3 D figures  Exercise - Projections of solids - 3 Q 1. Draw the projections of a square prism of  base side  30 mm and height 60 mm having its axis parallel to the VP but inclined to the HP at 45 degrees. The prism has two of its base edges  Q 2. Draw the projections of a triangular prism of  base side  40 mm and height 70 mm  having its axis parallel to the VP and inclined to the HP at 60 degrees. Q 3. Draw the projections of a hexagonal prism of  base edge  40 mm and height 70 mm  having its axis parallel to the VP and inclined to the HP at 45 degrees . The prism is placed in a way that two of its base edges are perpendicular to the VP.     Q 4. Draw the projections of a pentagonal prism of  base edge  40 mm and height 80 mm  having its axis parallel to the VP and inclined to the HP at 60 degrees . T

Dear Students, Greetings and a warm welcome to all of you. The theme of the day is 'Humility'. You must have heard the phrase  'Humility wins the race '. The phrase means that a person who is humble and gentle is sure to reap success in life.  Humility means humble or modesty  while its  opposite is arrogance . We all know that arrogance is an undersirable quality that no one likes. Let me ask you, would you be happy to meet an arrogant and a haughty person? Clearly, your answer will be, No.  Just imagine, if you are one such arrogant person, what will be your fate?  Humility is not a defeatist thought or an attitude anymore. It takes a lot of courage to be humble and gentle rather than being arrogant and boisterous. Today when there are so many arrogant and haughty people around us, it is a welcome change to meet a humble person. A humble person is well grounded does not let the air of superiority to adversely affect him and acquire undesirable qualities. Whenever a hu

Dear Students, Good Morning and a warm welcome to today's class. It feels really nice to meet up for yet another class this morning.    We will continue with projections of Solids or 3 D figures  Exercise - Projections of solids - 2 Q 1. Draw the projections (FV and TV) of a triangular prism of  base side  30 mm and length of its axis 60 mm placed in the VP with its axis perpendicular to it and having one of its base edges, nearer and parallel to the HP.   Q 2. Draw the projections (FV and TV ) of a triangular prism of  base side  40 mm and height 70 mm placed in the VP with its axis perpendicular to it and having one of its base edges, away and parallel to the HP.   Q 3. Draw the projections of a triangular pyramid of  base edge  40 mm and height 70 mm placed in the VP with its axis perpendicular to it and having one of its base edges, nearer and parallel to the HP.     Q 4. Draw the projections of a triangular pyramid of  base edge  30 mm and height 60 mm placed in the VP with

Dear Students, Greetings and a warm welcome to all of you. Attention Please: Important Instructions You need to write your names in the comment section at the end of this blog as a mark of your attendance. You can use the same section to ask any doubts that you may have. I will also be posting my instructions to you in that very section. Hence, keep checking the bottom of this blog at regular intervals -------------------------------------------------------------------------------------------------------- The theme of the day is  'Truthfulness and Honesty' . We start with a small quote of Albert Einstein: “Whoever is careless with the truth cannot be trusted at all”  ―  Albert Einstein We all learn the lessons of truthfulness and honesty from early childhood. We are told a number of stories in which truth and honesty survive in the end and triumph. Your parents and teachers always tell you to be truthful and honest in life. Did you ever think why being  truthful and honest is  

The theme of the day is  'Perseverance' . "Great works are performed not by strength but by perseverance." - Samuel Johnson What does perseverance mean? Perseverance means persistence in doing something despite difficulty or delay in achieving success. We all face difficult situations everyday in our lives. So what should be our response to such difficult situations? Should we quit our efforts to achieve success at the first encounter with problems? Of course not. If we quit, it will be the end of all the dreams that we have seen for ourselves. The dreams about our prosperity, well-being and superlative achievements. We also deny ourselves an opportunity to revel in the glory that our accomplishments would bring. Not only this, we must have spent huge amount of resources including time, money, material, hard work etc. and quitting at this stage will mean wasting all these resources. Some of these resources may belong to an individual but in the broader sense and ultim

Dear Students, Greetings and a warm welcome to all of you. Attention Please: Important Instructions You need to write your names in the comment section at the end of this blog as a mark of your attendance. You can use the same section to ask any doubts that you may have. I will also be posting my instructions to you in that very section, therefore please keep checking the bottom of this blog at regular intervals. -------------------------------------------------------------------------------------------------------- The theme of the day is  'Positive Thinking' . "Even the darkest night will end and the sun will rise." - Victor Hugo You must have heard people ask you to think positive and remain hopeful. Did you ever wonder why is it so? It is natural human tendency to think negative and feel overwhelmed with pessimistic thoughts and fear. Such a situation is not conducive for maintaining equanimity and composure. Negative thoughts are self defeating and do not allow u

Dear Students, Good Morning and a warm welcome to today's class. It feels really nice to meet up for yet another class this morning. We have been studying how to draw projections of planar figures primarily regular polygons such as Triangles, Squares, Pentagons and Hexagons along with Circles.     Let us now learn to draw projections of Solids or 3 D figures  Exercise - Projections of solids - 1 Q 1. Draw the projections (FV and TV ) of a triangular prism of base side 30 mm and height 60 mm placed on the HP with its axis perpendicular to it and having one of its base edges (nearer the observer) parallel to the VP.   Q 2. Draw the projections of a triangular pyramid of base edge  40 mm and height 70 mm placed on the HP with its axis perpendicular to it and having one of its base edges (away from the observer) parallel to the VP.     Q 3. Draw the projections (FV and TV ) of a triangular prism of  base side  40 mm and height 70 mm placed on the HP with its axis perpendicular to it a

Dear Students, Good Morning and a warm welcome to today's class. It feels really nice to meet up for yet another class this morning. We have been studying how to draw projections of planar figures primarily regular polygons such as Triangles, Squares, Pentagons and Hexagons along with Circles.     Let us now draw the projections in the following 4 questions. Exercise - Projections of planar figures - circles Q 1. Draw the projections of a circle of radius 30 mm whose surface is inclined to the HP at 45 degrees  Q 2. Draw the projections of a circle of radius 30 mm whose surface is inclined to the VP at 45 degrees 

Dear Students, Good Morning and a warm welcome to today's class. It feels really nice to meet up for yet another class this morning. Recall that in our last class before the break, we had learnt about  Single Riveted Lap Joint Today we will be starting the 2nd Unit which is called as the Assembly and Disassembly Drawings. What is an ASSEMBLY ? A machine consists of various smaller machine parts that we have studied in the previous chapter. The process of putting together various machine parts to make a machine is called as ASSEMBLING and the final result so obtained is called as ASSEMBLY   What is a DISASSEMBLY ? The process of separating various machine parts of a machine of which it is made up of is called as  DISASSEMBLING and the final result so obtained is called as a  DISASSEMBLY   A simple block (not a machine) is illustrated below.  1. The figure on the top right hand side is the assembled block or an ASSEMBLY. 2. This assembly is separated into its various parts or compone

Dear Students, Good Morning and a warm welcome to today's class. It feels really nice to meet up for yet another class this morning. Recall that in our last class before the break, we had learnt about the KEYS Let us now proceed further and learn about Riveted joints called as the Single Riveted Lap Joint  What is a Lap joint? You have learnt that a rivet is used to join two metal plates together. To form a lap joint these 2 metal plates are placed one on top of the other and the rivets are inserted through both of them.  When a single row of rivets is used to fasten them, it is referred to as Single Riveted Lap Joint. Refer to fig 1 below.      Fig 1 Exercise Q1. Draw to scale, the Top view and Sectional front view of a single riveted lap joint on metal plates having thickness as 16 mm.  Ans: We first do the following Calculations we are given, t = 16 mm 1. we find the Diameter of the rivet, d = 6 (square root t) = 6 (square root 16) = 6 X 4 = 24 mm 2. margin, m = 1.5 d = 1.5 X

Dear Students, Good Morning and a warm welcome to today's class. It feels really nice to meet up for yet another class this morning. In the last class before the break we had learnt about  projection of planar figures.  In today's class we will continue with the same topic. In drawing the projection of planar figures our knowledge of projection of points and lines will prove to be quite expedient and important.    Let us now draw the projections in the following 4 questions. Exercise - Projections of planar figures  Projections mean - The Top View and the Front View Q 1. Draw the projections of a square of side 30 mm whose surface is parallel to the VP and its diagonal is perpendicular to the HP. Q 2. Draw the projections of a hexagon of side 30 mm whose surface is parallel to the HP and two of its sides perpendicular to the VP.  Q 3. Draw the projections of a hexagon of side 30 mm whose surface is inclined to the HP at 45 degrees and two of its sides perpendicular to the VP. Q