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Board : State Board of Technical Education
Subject : Basic Engineering Drawing
Document Type : Question Bank
State : Bihar
Website : sbtebihar.gov.in

Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/7357-00106.pdf

SBTE Bihar Basic Engineering Drawing Question Paper

Group-A

1.(A) Choose the appropriate word/words given in the bracket : 1×10=10
(i) Lower case letters may be written within ……………………. guidelines. (four / three)
(ii) An ellipse has ………………… directrix / directrices. (one / two)

Related : Bihar State Board of Technical Education 1st Year Surveying & Measurement Question Bank : www.pdfquestion.in/7360.html

(iii) When a cone is cut by a plane inclined at an angle with vertical greater than semi-vertical angle of the cone, the section is …………….. . ( a parabola / an ellipse)
(iv) Distance of a point on a curve from its directrix is equal to the distance from its focus. The curve must be …………… . (a parabola, hyperbola)

(v) A straight line contained in both HP and VP. Top and front view of the line will be ……………… . (same / different)
(vii) To obtain plan and elevation on a paper, the HP is always rotated so that second and fourth quadrant are always …………….. . (opened / closed)

(viii) When a straight line is rotated by keeping its angle with HP constant, the height of the top end of the line from ground line ……………. . (changes / remains constant).

(ix) True length obtained by trapezoid method when produced intersects the front view or front view produced at ……………. . (HT / VT)
(x) Auxiliary front view is drawn on an ……………. (auxiliary inclined plane / auxiliary vertical plane).

(B) Write True for correct statement and False for wrong statement : 1×10=10
(i) Side view of an object is projected on a plane perpendicular to both HP and VP.
(ii) Distance of a line in side view from the point of intersection of HP, VP and Profile plane is the shortest distance of the line from xy-line.

(iii) In an isometric projection, horizontal edges of an object are horizontal.
(iv) Development of lateral surfaces of a pyramid consists of a number of triangles in contact.
(v) An oblique plane is inclined to HP only.

(vi) When both plan and elevation are equal and parallel to the xy-line, the line must be horizontal.
(vii) End view of a line is a point.
(viii) A cone has one generator only.
(ix) Isometric view of a solid is drawn with true scale.
(x) Development of lateral surfaces of a solid is used in a found shop.

Group-B

Draw any four questions : 6×4=24
2. Two points P and Q are in HP. The point P is 25 mm in front of VP, while the point Q is behind VP. The distance between end projectors is 80 mm and the line joining their top views make an angle of 45º with xy-line. Find the distance of the point Q from the VP. 6

3. A point P is 20 mm in front of VP and 30 mm above HP. Draw its auxiliary top view on a plane perpendicular to the VP and inclined at 25º to the HP. 6

4. Construct a plain-scale of R.F. 1 : 4000 to show a single metre and long enough to measure upto 500 metre. Show on it a length of 353 metre. 6

5. Draw the projection of a hexagonal pyramid, base 25 mm side and axis 55 mm long, having its base in the HP and one of the edges of its base perpendicular to the VP. 6

6. A cone, diameter of base 45 mm and axis 50 mm long is resting on its base on HP. It is cut by a section plane, perpendicular to the axis of the cone, bisecting the axis. Draw sectional plan of the cone. 6

7. Construct a parabola of base 60 mm and rise 50 mm. 6

Group-C

Answer any three questions :–12×3=36
8. A line AB 80 mm long and lies in a plane perpendicular to VP and inclined at an angle of 45º with HP. The front view 10 of the line is 60 mm long. The end A is in the VP and 25 mm in above the HP. Draw projections of the line and find
(a) inclinations with the reference planes
(b) its traces. 12

9. A cube of 40 mm long edges is resting in HP on one of its faces with a vertical face inclined at 30º to the VP. It is cut by a section plane perpendicular to the HP and inclined at 60º to the VP the section plane cuts the face which is inclined at 60º with the VP, in two equal halves. Draw the sectional front view and true shape of the section. 12

10. Draw development of lateral surfaces of a pentagonal pyramid, base 20 mm side and axis 50 mm long, resting on its base in the HP keeping one of the edges of its base parallel to the VP. A section plane perpendicular to the VP and inclined at 30º with the HP, cuts its axis 20 mm above the base. Assume lower portion of the pyramid removed. 12

11. Draw plan, elevation and isometric projection of a sphere of radius 20 mm resting centrally on the top surface of a rectangular prism of length, width and height 50 mm, 45 mm and 15 mm respectively. 12

12. A hexagonal pyramid, base 25 mm side and axis 50 mm long is resting on one of the edges of its base in the HP and parallel to the VP. Draw its projections and side view also. 12