MODEL PAPER 1 ENGINEERING DRAWING

Which code provides standard symbols for architectural and building drawings in India?

• IS 456:2000
• IS 800:2007
• IS 962:1989
• IS 3370:2009

Answer explanation

IS 962:1989 specifies the standard symbols used in architectural and building drawings.

Which of the following is a standard angle in a 30°–60° set square?

• 30°
• 45°
• 75°
• 15°

Answer explanation

A 30°–60° set square provides fixed angles of 30°, 60°, and 90° for precise construction.

Which symbol is used to indicate the angle in engineering drawing?

• R
• ∠
• Ø
• θ

Answer explanation

The symbol '∠' is used to represent angles in technical and engineering drawings.

Which sheet size is exactly half the size of A2 sheet?

• A1
• A3
• A4
• A0

Answer explanation

An A3 sheet (297 × 420 mm) is half the size of A2 (420 × 594 mm) as per ISO standards.

Which of the following shows true shape and size of the object in projection?

• Perspective projection
• Oblique projection
• Auxiliary projection
• Isometric projection

Answer explanation

Auxiliary projection is used to show the true size and shape of inclined surfaces.

Which of the following is a standard drawing sheet size used in engineering drawing?

• A3
• B1
• C2
• D4

Answer explanation

A3 is a standard ISO paper size (297×420 mm) commonly used for engineering drawings.

Which type of scale is used to measure units smaller than the smallest division of a plain scale?

• Comparative scale
• Diagonal scale
• Vernier scale
• Chord scale

Answer explanation

Diagonal scales allow measurement of units smaller than the smallest main division.

The ratio of the length of the drawing to the actual length of the object is called:

• Scale
• Representative Fraction (R.F.)
• Proportion
• Gradient

Answer explanation

R.F. = Length on drawing / Actual length of object; it's dimensionless and defines scale.

Which of the following lines is used to represent centre lines?

• Continuous thick
• Dashed thin
• Chain thin
• Continuous thin

Answer explanation

Chain thin lines (long dash followed by short dash) are used for center lines.

What is the primary purpose of dimensioning in engineering drawing?

• Aesthetic purpose
• To identify materials
• To specify measurements
• To apply colors

Answer explanation

Dimensioning provides the measurements necessary to manufacture the object.