Category Archives: Test Question Answers

Problems in Projection of Points – 2008-09

PROJECTION OF POINTS

CLASS WORK

 

1. Draw the projection of the following points.

  • Point A which is 40 mm above HP and 55 mm in front of VP (First Quadrant)
  • Point B, which is 10 mm above HP and 15 mm behind VP.(Second Quadrant)
  • Point C, which is 25 mm below HP and 20 mm behind VP (Third Quadrant)
  • Point D, which is 20 mm below HP and 20 mm in front of VP(Fourth Quadrant)

     

  • Draw the projection of the following points lying on HP.
  1. Point P which is 30 mm in front of VP.
  2. Point Q which is 40 mm behind VP.

     

  • Draw the projection of the following points lying on VP.
  1. Point R which is 30 mm above HP.
  2. Point S which is 40 mm below HP.

     

4. Draw the projection of points on a common reference line. Take 20 mm distance between the projectors.

Point A is 10 mm above HP and 25 mm in front VP

             Point B is 10 mm above HP and on the VP.

Point C is 25 mm below HP and 20 mm behind VP

Point D is 20 mm below HP and 20 mm in front of VP

Point E is on the reference line

Point F is on both HP and VP.

 

  1. Figure shows the projections of different points. Determine the position of the points with reference to the projection planes. The distances marked are in millimeters.


 

 

  1. A point C is on HP and 15 mm behind VP. Another point D is also on HP and 40 mm in front of VP. The distance between their projectors is 45 mm. Join their top views and determine the inclination of this line with XY line.
  2. A point P is on HP and 20 mm in front of VP. Another point Q is also on HP and behind VP. The distance between their end projectors is 60 mm. Draw its projections if the line joining P and Q makes an angle of 600 with reference line. Also find the position of point Q.
  3. A point A is 25 mm above HP and is in the first quadrant. Its shortest distance from the reference line XY is 45 mm. Draw the projections of the point and determine its distance from the VP.


    ASSIGNMENT-1

  1. A point B is 40 mm from HP & 25 from VP. draw its projections in all possible positions
  2. Project the following points and specify their quadrants.
    1. A Point P plan is 40mm above XY and the elevation is 20mm below the plan.
    2. A Point Q its projections coincide with each other and 30 mm below XY.
  3. A point S is 20 mm AHP and IVP, another point Q is 25 mm BVP and 40mm BHP. Draw the projections of S&Q .the distance between their projectors is 40 mm.
  4. Draw the projection of following points on the same reference line keeping the projectors 15 mm apart.
    1. In the HP & 25 mm BVP
    2. 30 mm AHP & In the VP.
    3. 45 mm AHP & 20 mm IVP
    4. In the HP &25 mm I VP

    e) 40mm BHP& 25 mm IVP

    f) In the HP& In the VP.

  5. Projections of various points are given in the figure. Determine their position of the with respect to HP and VP and mention their quadrant. Distances are given in mm.


—————————————

ADDITIONAL EXERCISES


  1. A point 40 mm above XY is the plan of three points A, B and C. the point A is 20mm above, the point B is 30 mm below and point C is on the HP. Determine the projections of A, B and C.
  2. Determine the projections of the points P,Q,R,S and T when

The plan of P is 20 mm below XY & p is 40 mm AHP

The plan of Q 30 mm above XY & q is 35mm AHP

The elevation of R is on XY & the point r is 45mm BVP.

s is in XY and the point S lies on the HP.

t is 20mm above XY and the point T is 30 mm BHP.

  1. The points A and B are in the HP. The point A is 30 mm in front of VP. The distance between their projectors is 75 mm and the line joining their plans makes an angle of 45 degree with XY. Find the distance of the point B from the VP.
  2. Draw the projection of a point P lying 30 AHP and in first quadrant, if its shortest distance from the line of intersection of planes is 50mm. also find the distance of the point from V.P

     



Unit Test Questions 2,3

Velammal College of Engg & Tech, Madurai – 625 009

Open Book Test-Unit 2,3

 

 

  1. A Pentagonal prism of base side 30mm and axis length 60mm rests on the HP on one of the base corners with the base edges containing it being equally inclined to HP. The axis is inclined at 450 to the HP and parallel to VP. Draw the projections of the prism.

 

  1. A right pentagonal pyramid of height 65mm and base 20mm side is lying on the ground with one of its triangular faces such that the axis is inclined at 300 to the VP. Draw the front and top views.

 

  1. A right circular cone diameter of base 56mm and height 65mm rests on its base on HP. A section plane perpendicular to VP and inclined to HP at 450 cuts the solid meeting the axis at a distance of 36mm from the base. Draw its front view, sectional top view and true shape of the section.

 

—–All the Best—–

 

 

Special Questions

Velammal College of Engineering & Technology, Madurai – 625 009

GE 102 – Engineering Graphics – Unit III

 

Self Test – 90 minutes                                                                Max.Marks: 50

 

  1. A Tetrahedron of edge 50mm rests on one of its faces on the HP such that one edge of the resting face is parallel to the VP. It is cut by a plane perpendicular to the VP and inclined at 300 to the HP such that the cutting point nearest to the HP on one of the extreme edge is 15mm above HP. Draw its sectional front view and true shape of the section.                                            15 Marks

 

  1. A Sphere of diameter 60mm is kept centrally over a frustum of a cone of bottom diameter 80mm and the top diameter 50mm and height 60mm.The frustum rests on its base on the HP. The assembly of the solids is cut by a vertical plane inclined at 500 to the VP. The minimum distance between the cutting plane and the plan of the centre of the sphere is 10mm. Draw sectional front view and the true shape of the section.        20 Marks

 

  1. A Hexagonal pyramid of base 30mm and axis 70mm lies on HP on one of its base point such that one of the slant faces is perpendicular to both the planes. Draw its projections when it is cut by a plane parallel to HP and a distance of 15mm from apex point.                 15 Marks

 

 

 

Cycle Test 1 for B.E./B.Tech

Click here for Question paper

Cycle Test1

Unit 1 Solutions (ECE)

Click here to download Solution for the ECE Unit – 1 test

Test-1-ECE-Solution