Engineering Graphics Class Module 3 _ IIT Bombay Professor _Semester 1 and 2 _ Episode 18
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00:00you
00:30you
00:36Okay, the question number 32 on a 32 question a square prism with equally England on a position
00:44I'm a square prism equally England a to land a correct cases of the
00:48Introduction video is square prism to induction video like cases. No one there that is crazy
00:52It will die in the induction video. I'll do it in a quarter case. I mean a b c d e
00:57No, I mean, I'm just a little and I'm five times. I'm gonna burn it in order
01:00But it'll add up a little 30 to a I'm a discussion, but so 30 to a
01:04Yeah, I'm a simple question
01:06But it's you then given data and or near true shape is a triangle with the maximum base and maximum altitude
01:12And I'm some car. Yeah, maximum base and maximum altitude and given data on this in true shape in the triangle and so rough sketch
01:19I had a triangle
01:21Then H H I did it again. It's an area in a middle or a distance. I'm excited again. That's why
01:27Midwally equal half a comet in the end. It's a it
01:30Added to so I didn't perpendicular a distance C point to be pointed on the distance V 1 and
01:35You would have eat you last year on them, but then I'm gonna turn it in a maximum base
01:39I'm going to order data. Let me see base maximum. I reckon. That means
01:43What I did in the V1 maximum then maximum altitude a true shape in the
01:48Altitude maximum
01:50H
01:53Maximum so triangle
01:55Even maximum H maximum
01:57So I'm a fixie and go on a fixie. I'm a first in quality. I am vertical distance
02:01I'll fix it in a video and I'm carrying a non value V1 is equal to maximum
02:06Oh, so it would end the lines and I give it a maximum
02:09I don't know. Okay, so maximum it in the video and in between these two points
02:13We don't do it
02:15Maximum
02:16Fixy
02:18V1
02:20V1
02:22Fixy
02:24Maximum
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05:30Compas
05:32Distance
05:34Point
05:36Mind
05:38Distance
05:40Distance
05:42Distance
05:48Distance
05:54Section Point
05:56section point 2 and third section point
06:003 vertical distance
06:023 vertical distance
06:063 vertical distance
06:083 vertical line
06:10so if you get 3 points
06:12connect them and draw
06:14you will get the true shape
06:16this point is 1
06:18this point is 2
06:20confusion
06:22point 1 and point 3
06:24if you write the numbers wrongly
06:26it will not be identified
06:28because we are giving numbers
06:30we have to use capital letters
06:32we are giving numbers so
06:34if we write it wrongly
06:36we will not get the true shape
06:38if you see here
06:40to draw the true shape
06:42even if we draw parallel lines
06:44we did not draw a parallel line
06:46so the true shape
06:48overlaps to the front view
06:50see
06:52it is not a problem
06:54because we have drawn it
06:56without light
06:58so it is not a problem
07:00only if there is space
07:02we can draw parallel lines
07:04so this is the true shape
07:06now second question
07:0832B
07:10in 32B
07:12true shape is
07:14this is 32B
07:16true shape is a triangle
07:18with maximum base
07:20and altitude is 48
07:22we are going to draw
07:24a rough sketch
07:26a triangle
07:28vertical distance
07:30height is h
07:32height is v1
07:34height is v2
07:36here is the given data
07:38maximum base
07:40v1 is equal to
07:42maximum
07:44altitude is not maximum
07:46here is the value
07:48h is equal to
07:5048
07:52here h is maximum
07:54here h is value
07:5648
07:58we are going to fix v1
08:00v1 is maximum
08:02so we can get the maximum
08:04these two points
08:06are maximum
08:08so first point is 1
08:10second point is 2
08:12v1 is fixed
08:14now we are going to project
08:16we are going to project
08:181' in front and 2' in back
08:20to cut from top to bottom
08:22to cut from top to bottom
08:24if we cut this line
08:26we will get a triangle
08:28where we are going to cut
08:30that will be the length of h
08:32in 3 we will get maximum
08:34but we don't need maximum value
08:36we need 48
08:38h value is 48
08:40that means
08:42measure 48
08:44measure 48 in compass
08:46take it in compass
08:48then put the line
08:50above it
08:52cut it in C3 line
08:54what we will get after cutting
08:56this is the cut point
08:58so that is the cut point
09:00so what we will get
09:02third point
09:04if the third point comes here
09:06this length
09:08h is equal to 48
09:10if it increases
09:12we will get 50
09:14maximum we will get is 3'
09:16this is 48
09:18so this is the
09:20section
09:22plane
09:24so draw section plane
09:26end point is 2
09:28darken it
09:30provide 6 h
09:32now we will draw the true shape
09:34to draw the true shape
09:36third point will come here
09:38in between C' and 3'
09:40so this is the third point
09:42sectional top view will be same
09:44as the previous one
09:46but the point
09:48altitude is 48
09:50so this is the sectional top view
09:52mark it
09:54now we will draw the true shape
09:56draw parallel lines
09:58first parallel line
10:02point
10:043 parallel line
10:06point
10:083 parallel line
10:10point
10:121 parallel line
10:16we don't know
10:18whether we will get the space
10:20I am trying to draw a parallel line
10:22now we don't get the space
10:24so we will highlight the remaining sections
10:26this is the remaining section
10:28this is the remaining section
10:30this point
10:32this line is only up to here
10:34so only up to here
10:36only darken
10:38middle edge is visible
10:40so darken
10:42top view is also visible
10:44hatching is also visible
10:463 is not gone
10:48so the top line
10:50is only up to here
10:52darken
10:54darken this
10:56this is the
10:58only section
11:00I have drawn the parallel lines
11:02now I am going to draw the true shape
11:04I am not drawing a parallel line
11:06because I think the space is less
11:08so I am not drawing
11:10distance is 1
11:12take the compass
11:14I marked the perpendicular line
11:161
11:18distance is 3
11:22take the perpendicular line
11:263
11:28distance is 2
11:30distance is 2
11:32very small distance
11:34take the compass
11:38I got 3 points
11:40this point is
11:42point is 3
11:44this point is
11:46sorry
11:48this point is 1
11:50and this point is
11:522
11:541,2,3
11:56connect 1,2,3
11:58triangle with
12:02base
12:04maximum base
12:06and altitude
12:0848
12:10H value is 48
12:12because I have cut it
12:14this is the distance
12:16hatching
12:18mark it
12:20it is a true shape
12:22mark it
12:24these were the
12:26two questions
12:2832A and 32B
12:30next
12:3232
12:3432C
12:36and 32D
12:38in 32C
12:40this is the question number 32C
12:4232C
12:44so 32C
12:46in 32C
12:48the true shape is
12:50rhombus with
12:52diagonal 67
12:54rhombus has
12:56only 4 points
12:58diagonal
13:00rhombus has only 4 points
13:02the length of rhombus
13:04the specialty of rhombus
13:06diagonal 47
13:08diagonal 47
13:10this length
13:12H
13:14diagonal
13:16H is equal to
13:1847
13:20V1 is not there
13:22V1 is equal to
13:240
13:26V2 value is there
13:28but we don't know
13:30V3 is equal to 0
13:32V1 and V2
13:34V2
13:36if the figure is in true shape
13:38we don't have any value
13:40maximum or minimum
13:42only the diagonal
13:4467
13:46H is equal to 67
13:48only the diagonal
13:5067
13:52V1 and V2
13:54V1 and V2
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