Engineering Graphics

Dear Students, The following is the holiday home work for the week 25th to 20th May 2020 We have learnt about the projection of planar figures. Let us now draw the projections in the following 8 questions. Exercise - Projections of planar figures -  A. Inclination with HP Q 1. Draw the projections of an equilateral triangle of side 30 mm whose surface is inclined to the HP at 30 degrees and one side perpendicular to the VP. Q 2. Draw the projections of a circle of radius 20 mm whose surface is inclined at an angle of 30 degrees to the HP. Q 3. Draw the projections of a pentagon of side 30 mm whose surface is inclined to the HP at 30 degrees and one of its side parallel to the VP and away from it. Q 4. 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. B. Inclination with VP Q 5. Draw the projections of an equilateral triangle of side 30 mm whose surface is inclined to

Dear Students, The following is the holiday homework for the week - 25th May to 29th May 2020 You will learn about  KEYS . Let us understand them in detail. What is a KEY? A key is a piece of metal which is used to fasten two parts together. More specifically, a key is used to join or tighten two circular moving parts together. For example, moving parts such as pulleys and flywheels are joined to the shaft by means of a key. A key prevents relative motion between the two parts so that these can rotate as one composite part. The key can be unfastened and removed. Therefore it is a temporary fastener. There is a groove cut out on the shaft as well as the pulley, within which a key is seated. The groove is called as the key way. Types of Keys 1. Rectangular Sunk Key 2. Woodruf Key Feather Keys are of two types 3. Gib Head Taper Key 4. Double headed feather key ----------------------------------------------------------- Lets us learn about Rectangular keys 1. Re

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 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 an equilateral triangle of side 30 mm whose surface is inclined to the VP at 30 degrees and one side perpendicular to the HP. Q 2. Draw the projections of a circle of radius 20 mm whose surface is inclined at an angle of 30 degrees to the VP. Q 3. Draw the projections of a pentagon of side 30 mm whose surface is inclined to the VP at 30 degrees and one of its side parallel to the

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, we had learnt about the RIVETS. Let us now proceed further and learn about another machine part called as  KEYS . What is a KEY? A key is a piece of metal which is used to fasten two parts together. More specifically, a key is used to join or tighten two circular moving parts together. For example, moving parts such as pulleys and flywheels are joined to the shaft by means of a key. A key prevents relative motion between the two parts so that these can rotate as one composite part. The key can be unfastened and removed. Therefore it is a temporary fastener. There is a groove cut out on the shaft as well as the pulley, within which a key is seated. The groove is called as the key way. Types of Keys 1. Rectangular Sunk Key 2. Wood ruff Key Feather Keys 3. Gib Head Taper Key 4. Double

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, we had learnt about the RIVETS. Let us now proceed further and learn about another machine part called as  KEYS . What is a KEY? A key is a piece of metal which is used to fasten two parts together. More specifically, a key is used to join or tighten two circular moving parts together. For example, moving parts such as pulleys and flywheels are joined to the shaft by means of a key. A key prevents relative motion between the two parts so that these can rotate as one composite part. The key can be unfastened and removed. Therefore it is a temporary fastener. There is a groove cut out on the shaft as well as the pulley, within which a key is seated. The groove is called as the key way. Types of Keys 1. Rectangular Sunk Key 2. Wood ruff Key 3. Gib Head Taper Key 4. Double headed feather

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 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 an equilateral triangle of side 30 mm whose surface is inclined to the HP at 30 degrees and one side perpendicular to the VP. Q 2. Draw the projections of a circle of radius 20 mm whose surface is inclined at an angle of 30 degrees to the HP. Q 3. Draw the projections of a pentagon of side 30 mm whose surface is inclined to the HP at 30 degrees and one of its side parallel to 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. Recall that in our last class, we had learnt about the RIVETS. Let us now proceed further and learn about another machine part called as  KEYS . What is a KEY? A key is a piece of metal which is used to fasten two parts together. More specifically, a key is used to join or tighten two circular moving parts together. For example, moving parts such as pulleys and flywheels are joined to the shaft by means of a key. A key prevents relative motion between the two parts so that these can rotate as one composite part. The key can be unfastened and removed. Therefore it is a temporary fastener. There is a groove cut out on the shaft as well as the pulley, within which a key is seated. The groove is called as the key way. Types of Keys 1. Rectangular Sunk Key 2. Woodruf Key 3. Gib Head Taper Key 4. Double headed feather ke

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 revise Orthographic projection in today's class. Orthographic Projection The word  Orthographic  consists of two words ' Ortho ' and ' Graphic '. ' Ortho ' means ' right angles ' and ' graphic ' means  drawing . Therefore, orthographic projection is a drawing in which the lne of sight falls perpendicularly on the  Planes of projection . Projectors The lines of sight or rays that fall go past the object and falling on the so called 'screens'. Projection Projection is the representation of the shape (something similar to the shadow) of the object on a plane (or the screen). If straight lines are drawn from various pointson the contour of the object to meet the plane (screen) the figure so obtained on the plane id called as the projection of he object. Planes of Projecti