PRELIM No:2
For private circulation only.
ENGINEERING DRAWING -1 Mumbai
3 HOURS
-- AT A
STRETCH PLEASE
!!!
100 MARKS
NOTE :
SECTION - I
Q:1 (a)] A CIRCLE OF 55 mm DIAMETER ROLLS OUTSIDE AND ALONG ANOTHER FIXED CIRCLE OF 140 mm DIAMETER . DRAW THE LOCUS OF THE POINT P ON THE CIRCUMFERENCE OF THE ROLLING CIRCLE FOR, ONE COMPLETE REVOLUTION OF THE ROLLING CIRCLE , IF INITIALLY THE POINT P IS 100 mm FROM THE CENTRE OF THE DIRECTING CIRCLE. NAME THE CURVE . DRAW A NORMAL AND A TANGENT TO THE CURVE AT A POINT 90 mm FROM THE CENTRE OF THE DIRECTING CIRCLE. [ 12 MARKS ]
OR
Q:1 ( b)]A STRAIGHT LINE PQ OF 64 mm LENGTH TURNS CLOCKWISE
ABOUT ITS END P FOR ONE COMPLETE REVOLUTION AND DURING THIS
PERIOD, A POINT S MOVES ALONG THE STRAIGHT LINE FROM P TO Q AND
RETURNS BACK TO THE POINT Q . IF ROTARY MOTION OF THE STRAIGHT
LINE ABOUT POINT P AND LINEAR MOTION OF POINT S ALONG PQ ARE BOTH
UNIFORM ,DRAW THE PATH OF THE POINT S . NAME THE CURVE. DRAW A
NORMAL& A TANGENT TO THE CURVE AT A POINT 32 mm FROM THE
POINT P.[12 MARKS]
Q:2] THE FRONT VIEW OF A 90mm LONG STRAIGHT LINE MN MEASURES 65 mm,WHILE ITS TOP VIEW MEASURES 75 mm . DRAW THE PROJECTIONS OF AB IF ITS END M IS 15 mm ABOVE THE HP AND 25 mm BEHIND THE VP, WHILE END N IS IN THE FIRST QUADRANT . DETERMINE THE INCLINATIONS OF THE LINE MN WITH THE REFRENCE PLANES AND LOCATE ITS TRACES.[12MARKS ]
Q:3 (a)]A SEMI-CIRCULAR THIN PLATE OF 70 mm DIAMETER RESTS ON THE VP ON ITS DIAMETER WHICH IS INCLINED AT 30Deg. TO THE HP AND THE SURFACE IS INCLINED AT 45Deg. TO THE VP . DRAW THE PROJECTIONS OF THE PLATE,& FIND ITS INCLINATION WITH THE HP. [ 13 MARKS]
OR
Q:3 (b) ]A PENTAGONAL PLANE LAMINA OF SIDES 40 mm IS RESTING ON
THE VP ON ONE OF ITS CORNERS SO THAT THE SURFACE MAKES AN ANGLE
OF 60Deg. WITH THE V P. IF THE SIDE OPPOSITE TO THIS CORNER MAKES
AN ANGLE OF 30 Deg. WITH THE HP AND IS PARALLEL TO THE VP, DRAW
FRONT AND TOP VIEWS OF THE PENTAGON . FIND INCLINATION OF THE
PLANE WITH THE HP.[ 13 MARKS ]
Q:4] A HEXAGONAL PRISM OF 36 mm EDGE OF THE BASE AND 66 mm LENGTH OF THE AXIS IS HAVING AN EDGE OF THE BASE INCLINED AT 45Deg. 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.[13MARKS ]
SECTION -II
Q:5]A PENTAGONAL PYRAMID SIDE OF BASE 42 mm AND HEIGHT 84 mm IS RESTING ON THE VP ON ONE OF ITS BASE CORNERS , WITH THE BASE MAKING AN ANGLE OF 30Deg. WITH THE VP AND THE TWO BASE EDGES CONTAINING THAT CORNER ARE EQUALLY INCLINED TO THE V.P. IT IS CUT BY A SECTION PLANE SUCH THAT THE H.T. AND THE V.T. OF WHICH ARE PERPENDICULAR TO THE XY LINE AND PASSES THROUGH THE CORNER ON WHICH IT IS RESTING.
DRAW THE F.V. , T.V. AND SECTIONAL LEFT SIDE VIEW RETAINING THE APEX . INDICATE THE TRUE SHAPE OF THE SECTION . [ 15 MARKS ]
Q:6 ] FOLLOWING FIG. 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 USE 1:1 SCALE
[15 MARKS ]
Q:7 ]FOLLOWING FIG . SHOWS THE PICTORIAL VIEW OF A MACHINE PART . DRAW THE FOLLOWING VIEWS USING 1:1 SCALE .
a ) SECTIONAL F.V ALONG AA. LOOKING IN THE DIRECTION OF ARROW "X" .
b) TOP VIEW . c) LEFT SIDE VIEW .
SHOW ALL THE HIDDEN DETAILS AND INSERT AT LEAST 10 MAJOR DIMENSIONS.
[ 20 MARKS ]
---AHFS---