PRELIM No:3
For private circulation only.
ENGINEERING DRAWING -1 Mumbai
3 HOURS -- AT A STRETCH PLEASE !!! 100 MARKS
NOTE :
SECTION - I
Q:1 (a)] A TRAINGLE ABC HAS SIDE AB = 75 mm, BC = 60 mm AND CA =45 mm. DRAW A PARABOLA PASSING THROUGH POINTS A,B AND C WHEN SIDE BC IS HORIZONTAL .
[12 MARKS ]
OR
Q:1 ( b)]A THIN SQUARE PLATE ABCD OF 50 mm LENGTH OF EACH SIDE IS STANDING ON ITS CORNER ' C' WITH DIAGONAL AC VERTICAL. THE PLATE IS ROTATED ABOUT THE DIAGONAL AC FOR ONE COMPLETE REVOLUTION . DURING THIS PERIOD A POINT P MOVES FROM A TO B . ASSUMING UNIFORM MOTIONS, TRACE THE PATH OF POINT P IN FRONT AND TOP VEIWS . NAME THE CURVE TRACED BY THE POINT P.[ 12 MARKS ].
Q:2] THE FRONT VIEW OF A STRAIGHT LINE AB , MEASURES 5O mm AT 45 DEG. TO THE XY LINE.POINT A IS 20 mm ABOVE THE HP. POINT B IS IN 3RD QUADRANT. THE LINE IS INCLINED AT 30 DEG. TO THE VP. THE HT OF THE LINE IS 15 mm INFRONT OF THE VP.DRAW THE PROJECTIONS OF THE LINE & FIND ITS INCLINATION WITH THE HP . LOCATE ITS VT ALSO. [ 12 MARKS ]
Q:3 (a)]A SEMI-CIRCULAR THIN PLATE OF 60 mm DIAMETER RESTS ON THE HP ON ITS DIAMETER WHICH IS INCLINED AT 45Deg. TO THE VP AND THE SURFACE IS INCLINED AT 30Deg. TO THE HP . DRAW THE PROJECTIONS OF THE PLATE [ 12 MARKS]
OR
Q:3 (b) ]A PENTAGONAL PLANE LAMINA OF SIDES 30 mm IS RESTING ON THE HP ON ONE OF ITS CORNERS SO THAT THE SURFACE MAKES AN ANGLE OF 60Deg. WITH THE H. P. IF THE SIDE OPPOSITE TO THIS CORNER MAKES AN ANGLE OF 30 Deg. WITH THE VP AND IS PARALLEL TO THE HP, DRAW FRONT AND TOP VIEWS OF THE PENTAGON . [ 12 MARKS ]
Q:4] A PENTAGONAL PRISM OF 30 mm EDGE OF THE BASE AND 65 mm LENGTH OF THE AXIS IS HAVING AN EDGE OF THE BASE INCLINED AT 30Deg. TO THE HP AND IN THE VP . DRAW THE PROJECTIONS OF THE PRISM, IF THE RECTANGULAR SIDE FACE CONTAINING THAT EDGE IS INCLINED AT 30Deg. TO THE VP.
SECTION -II
Q:5]A PENTAGONAL PYRAMID SIDE OF BASE 40 mm AND HEIGHT 80 mm IS RESTING ON H.P. ON ONE OF ITS BASE CORNERS , WITH THE BASE MAKING AN ANGLE OF 45Deg. HP AND THE TWO BASE EDGES CONTAING THAT CORNER EQUALLY INCLINED TO THE GROUND ( H.P.) . IT IS CUT BY A SECTION PLANE SUCH THAT THE H.T. AND THE V.T. OF WHICH ARE PERPENDICULAR TO XY LINE AND PASSES THROUGH THE CORNER ON WHICH IT IS RESTING .
DRAW THE F.V. , T.V. AND SECTIONAL LEFT SIDE VIEW RETAING THE APEX . INDICATE THE TRUE SHAPE OF THE SECTION . [ 15 MARKS ]
Q:6 ] Following FIGURE: Q6 SHOWS THE PICTORIAL VIEW OF A MACHINE BLOCK . DRAW THE FOLLOWING VIEWS.
a) FRONT VIEW , LOOKING IN THE DIRECTION OF ARROW 'X' .
b) TOP VIEW .
c) LEFT SIDE VIEW .
SHOW ALL THE HIDDEN DETAILS & Show Minimum 10 Dimensions : USE 1:1 SCALE
[ 12 MARKS ]
Q:7 ]Following FIGURE:Q7 SHOWS THE PICTORIAL VIEW OF A MACHINE PART . DRAW THE FOLLOWING VIEWS USING 1:1 SCALE . .....[ 20 MARKS ]
a ) SECTIONAL F.V ....ALONG SECTION PLANE AA. . ...[7 marks]
b) TOP VIEW .......[6 marks]
c) LEFT SIDE VIEW ....[5 marks]
d) INSERT AT LEAST 10 MAJOR DIMENSIONS.......[ 2 marks ]