**851. The C.G. of a right circular cone lies on its axis of symmetry at a height of**

A. h/2

B. h/3**C. hI4**

D. hI5

**852. Centre of gravity of a thin hollow cone lies on the axis of symmmetry at a height of**

A. one-half of the total height above base**B. one-third of the total height above base**

C. one-fourth of the total height above base

D. none of these.

**853. The Centre of gravity of a 10 x 15 x 5 cm T section from its bottom, is**

A. 7.5 cm

B. 5.0 cm**C. 8.75 cm**

D. 7.85 cm

**854. A square hole is punched out of a circular lamina, the diagonal of the square being the radius of the circle. If r is the radius of the circle, the C.G. of the remainder from the corner of the square on the circumference will be**

A. r(rc + 0.25)

B. r(iT – 0.5)Tr -I- 0.25**C. rqc_-. 0.25)**

D. rift+ 0.25J

**855. The minimum number of rivets for the connection of a rivet hole and the gusset plate, is**

A.1**B.2**

C.3

D.4

**856. The weakest section of a diamond riveting, is the section which passes through****A. first row**

B. second row

C. central raw

D. one rivet hole of end row.

**857. If b is the width of a plate joined by diamond riveting of diameter d, the efficiency of the joint is given by**

A. b + d**B. b – d**

C. -E (1 – m)

D. P (1 + m)

**858. The type of butt joints in common use, is :****A. single inverted V-butt joint**

B. double V-butt joint

C. double U-butt joint

D. single V-butt joint.

**859. The maximum load to which a fillet joint of length L can be subjected to, is****A. 0.7 x S x fillet size x L**

B. 2 x S x fillet size x L

C. permissible shear stress x fillet size x L

D.S x fillet size x L 3

**860. The maximum resistance against rotation, is offered by the weld at a point****A. most distant**

B. least distant

C. at either end

D. centrally located.

**NOTEIF YOU THINK ANY OF THE MCQ ABOVE IS WRONG.PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX.THANK YOU**