Drawings - Projections

The ratio between isometric length and true length :

• 0.816 : 1
• 0.516 : 1
• 1 : 122.5
• 1 : 0.725

The length of a line in an isometric projection will be

• Equal to the actual length of the line
• 0.82 times the actual length of the line
• 1.82 times the actual length of the line
• None of these

The ratio of the symbol of orthographic projection either first angle or third angle is

• 1 : 2 : 3
• 1 : 2 : 4
• 1 : 3 : 6
• 1 : 4 : 8

If three lines drawn from a point parallel to the three isometric axis meeting at a point makes an angle of __________ with each other.

• 30°
• 45°
• 90°
• 120°

Isometric view will be __________% larger than the isometric projection

• 122.5
• 81.6
• 125.5
• 130

When the object is placed in 1st quadrant such that it is between the projection plane and the observer, then the obtained projection is called :

• 1st angle projection
• 3rd angle projection
• Izometric projection
• Orthographic projection

Isometric drawing are at __________ degree from place

• 15°
• 5°
• 45°
• 30°

Hatching lines are drawn at __________ degree to reference line.

• 30
• 45
• 60
• 90

The development of surface of a cube consists of __________ equal squares.

• 4
• 6
• 8
• 12

In cabinet oblique projection, the angle between the plane of projection and the line of projection is :

• 30°
• 33°50'
• 63°26'
• 45°