Drawing
Orthographic Projections
25) The mathematically represented hypocycloid is.....
a) Y = a cos3 Ø, X = a sin3 Ø
b) X = a sin3 Ø, Y = a cos3 Ø
c) X = a cos3 Ø, Y = a sin3 Ø
d) None of these
26) Mathematically represented by involute is
a) X = r sin Ø - r Ø cos Ø, Y = r cos + r Ø sin Ø
b) X = r sin Ø + r cos Ø, Y = r cos Ø – r Ø sin Ø
c) Y = r Ø cos Ø – r sin Ø, X = r sin Ø – r Ø cos Ø
d) X = r cos Ø + r Ø sin Ø, Y =r sin Ø - r Ø cos Ø
27) The lines from the object to the plane are called.......
a) Projection
b) Projector
c) Reference plane
d) None of these
28) The orthographic projection an object is represented by View on the mutual perpendicular projection lines
a) Two or three
b) Three or two
c) Three or four
d) None of these
29) When the projectors are parallel to each other & also perpendicular to the plane, the projection is called......
a) Isometric projection
b) Oblique projection
c) Orthographic projection
d) Perspective projection
30) The two planes employed for the purpose of Orthographic projections are......
a) Auxillary plane
d) Horizontal plane
c) Reference plane
d) None of these
31) The line in which they intersect is termed the reference line & is denoted by the letters.......
a) AB
b) YZ
c) XY
d) None of these
32) The projection on the VP is called........
a) Side view
b) Front view
c) Top view
d) All of these
