PRELIM No:6
For private circulation only.
ENGINEERING DRAWING -1 Mumbai
3 HOURS -- AT A STRETCH PLEASE !!! 100 MARKS
NOTE :
SECTION - I
Q:1] A POINT P , MOVES IN A SINGLE PLANE , WITH RESPECT TO TWO FIXED POINT A & B, WHICH ARE IN THE SAME PLANE., IN SUCH A MANNER THAT , THE SUM OF ITS DISTANCES FROM THE FIXED POINTS , IS ALWAYS CONSTANT., AND IS EQUAL TO120 mm . AB=80 mm . DRAW CURVE TRACED BY THE POINT P , AND NAME IT. DRAW ALSO A TANGENT TO THE PLANE CURVE AT A POINT 20 mm FROM THE FIXED LINE AB. [12 MARKS ]
Q:2] (a)] A LINE "KL" IS INCLINED AT 60 TO THE VP & 30 TO THE HP. THE END POINT "K" IS 15 mm ABOVE THE HP & 60 mm INFRONT OF THE VP.THE OTHER END "L" IS 20 mm BEHIND THE VP AND IS ABOVE THE HP. DRAW ITS PROJECTIONS & FIND ITS TRUE LENGTH ALONG WITH ITS TRACES.
[ 12 MARKS ]
OR
Q:2 (b)] A LINE PQ MEASURES 100 mm .THE MID POINT OF THE LINE, M , IS 16 mm BELOW THE HP & 12 mm BEHIND THE VP. THE FV OF THE LINE IS 55 mm LONG,WHILE THE PLAN MEASURES 75 mm .THE END POINT Q IS IN FIRST QUADRANT. DRAW THE PROJECTIONS OF THE LINE & LOCATE ITS HT & VT. FIND THE INCLINATIONS OF THE LINE WITH THE REFERENCE PLANES. [ 12 MARKS]
Q:3(a)] A 300 - 600 - 900 SET-SQUARE PQR ,OF NEGLIGIBLE THICKNESS, HAS ITS LONGEST EDGE ,PR , 200 mm LONG IN THE HP. THE POINT Q IS 45 mm ABOVE THE HP AND IS AWAY FROM THE VP.THE EDGE QR OF THE SET-SQUARE IS AT AN ANGLE OF 300 TO THE VP. . DRAW PROJECTIONS OF THE SET-SQUARE . FIND THE INCLINATION OF THE PLANE OF THE SET SQUARE WITH THE VP & THE HP.
[ 13 MARKS ]
OR
Q:3(b)] A PENTAGONAL PLANE "ABCDE" IS INCLINED TO THE HP AT 450 & ALSO INCLINED TO THE VP AT 300. A SIDE OF THE PLANE MEASURES 45 mm . THE CORNER "A" IS RESTING ON THE HP , WHILE THE OPPOSITE SIDE "CD" IS HORIZONTAL & IS NEARER TO THE VP. DRAW THE PROJECTIONS OF THE PLANE . [13 MARKS ]
Q:4] A. DRAW THE PROJECTIONS OF A frustum OF PENTAGONAL PYRAMID OF BASE SIDE.50 mm & HEIGHT 90 mm ,WHICH HAS ITS TOP PLANE SIDE 20 mm.TWO OF ITS ADJACENT LATERAL SURFACES ARE VERTICAL, TOUCHING THE GROUND AT A COMMON POINT . WHICH IS A CORNER OF THE BASE. THE TOP VIEW OF THE AXIS IS INCLINED AT 45 TO THE VP. FIND THE INCLINATIONS OF THE AXIS OF THE FRUSTUM , WITH THE HP & THE VP. [ 13 MARKS ]
SECTION -II
Q:5] A CYLINDER OF BASE DIA. 90 mm & HEIGHT 110 mm , IS STANDING ON ITS BASE ON THE HP. IT HAS A CO-AXIAL PRISMATIC SQUARE HOLE OF SIDE 35 mm .IT IS CUT BY A SECTION PLANE PERPENDICULAR TO THE VP & INCLINED TO THE HP AT SUCH AN ANGLE THAT THE EXTERNAL BOUNDARY LINE OF THE SECTION IS AN ELLIPSE OF MAJOR AXIS 130 mm & MINOR AXIS 90 mm. DRAW THE SECTIONAL T.V. & FV , AND DRAW 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) RIGHT 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 ) F.V ....................................................................... ...[7 marks]
b) TOP VIEW ................................................................[6 marks]
c) LEFT SIDE SECTIONAL VIEW ...............................[5 marks]
d) INSERT AT LEAST 10 MAJOR DIMENSIONS.......[ 2 marks ]
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