67) A triangular sector of angle 60 degree is cut from a circle of radius r with its apex at the centre of the disc. The centre of gravity of the sector lies

at the centre of the disc

at the centre of the triangular sector

somewhere in the disc

somewhere in the sector

Answer is:

somewhere in the disc

at C

between A and C

between C and B

None of the above

Answer is:

Orthographic projection

Oblique projection

Isometric projection

Perspective projection

Answer is:

Unidirectional system

Aligned system

Vertical dimension system

Both (1) and (2)

Answer is:

bcc

fcc

orthorhombic

cubic structure

Answer is: