Cochin University of Science and Techology (CUST) 2006 B.Tech Civil Engineering Engineering Graphics_2 - Question Paper

BTS(C) -1 -06 - 006 (A)

B. Tech. Degree I and II Semester (Combined) Examination, June 2006

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CE/EC/IT/EB 106 ENGINEERING GRAPHICS

(For Regular students - 2005 Admissions only)

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Time: 3 Hours    Maximum Marks: 100

I    a) A room of 1000 m³ volume is represented by 125 cm³ op a model. Draw a plane

scale long enough to read 30m. What is the R.F? On the scale indicate a distance of 19.5 m.    (8)

b) Construct a backward reading vernier of R.F= to sho v decimeters, centimeters

2.5

and millimeters long enough to read 4 decimetres. Mark on the scale lengths 2.26dm

and 0.57dm.    (12)

OR

II    a) Draw a hyperbola given .ransverse axis - 80mm, single ordinate ~ 60mm and

abscissa = 48mm.    (10)

b) A wheel of diameter 40mm rolls on another fixed wheel of 180mm diameter externally without slipping. Draw the curve traced by the point P on he rolling wheel for one revolution such that it is 30mm away from its centre and si uated diametrically opposite to the point of contact in the starting position.    (10)

III    a) Draw the projections of a straight line AB 100mm long inc lined at 30 the ground

and 45 to the VP. The end A is on the HP and end B is in the vertical position.

Also locate its traces.    (10)

b) Draw the projections of a line AB, 90mm long, its midpoint M being 50mm above the HP and 40mm in front of VP. The end A is 20mm above the HP and 10mm in front of the VP. Show t tie traces and the inclinations of tk e line with HP and VP.    (10)

OR

IV    a) ABCD is a rhombus of diagonals AC 100 mm and BD 70rim. Its comer C is on

HP and the plan of the rhombus is a square. Draw its projections and find its inclination with HP. Also mark HT and VT of the plane. Assume ths t centre of rhombus is 40mm above HP and 50mm in Tont of VP.    (10)

b) A rectangular lamina of 50mm x 90mm rests on HP on one of its shorter edges. The lamia is rotated about thi edge on which its rests till it app ears as a square in the top view, the edge on which the lamina rests being parallel to )oth HP and VP. Draw its projections and find its inclinations with HP and VP.    (10)

V    Draw the projections of a pentagonal pyramid 40mm side and axis 70mm long when it is resting on one of its base edges with the axis making i n angle 30 with HP and

45 with VP.    (20)

OR

VI    A cone, 80mm base dianeter, axis 80mm long, is resting i pon its base on HP. It is cut by a vertical plane, fie HT of which makes an angle ol 45 with the reference line and is 16mm away from the axis. Draw the sectional from view and true shape of

section, if the apex is retained after cutting the solid.    (20)

VII    Draw the development of the lateral surface of the right circular cylinder of diameter 44mm and height 70mm. The cylinder is placed ori HP. A section plane, passing through the geometrical centre of the top face of the cylinder perpendicular

to VP and inclined at 45 t:> HP, cuts off the top portion of the tube. A similar sectional plane making an angle of 30 to HP in the opposite direction cuts the axis at a height of 14mm from the base.    (20)

OR

VIII    A vertical square prism base 50mm side has its faces equall) inclined to VP. It is completely penetrated by another square prism of base 30rmn side, the axis of which is parallel to both the planes and is 6mm away from the axis of vertical prism and nearer to VP. The faces of the horizontal prism a e equally inclined to the VP. Draw the .projections of the solids showing lines jf the intersection.

Assume the length of both the prisms to be 100mm.    (20)

IX    Draw the isometric projection of a hexagonal prism with a hemispherical top, touching

all sides. The sides of the hexagonal prism are each 6cm an 1 height 60cm.    (20)

OR

X    Draw the perspective projection of a pentagonal prism of side 25 mm and length 50 mm, lying on one of its rectangular faces on the ground plane ar d one pentagonal face touching die picture plane. The station point is 55mm in front of the picture plane and lies in the central plane which is 75mm to the left of the centre of the prism. Station point is 30mm above the ground plane.    (20)

Attachment: cochin-university-of-science-and-techology--cust--2006-b-tech-civil-engineering-36801-1.pdf

Earning:   Approval pending.