# Practice Test: Question Set - 15

**1. Shear force for a cantilever carrying a uniformly distributed load over its length, is**

- (A) Triangle

- (B) Rectangle

- (C) Parabola

- (D) Cubic
parabola

**2. The weight of a body is due to**

- (A) Centripetal force of earth

- (B) Gravitational pull exerted by the earth

- (C) Forces experienced by body in atmosphere

- (D) Gravitational force of attraction towards
the centre of the earth

**3. For structural analysis of forces, the method refers to**

- (A) Moment-area-theorem

- (B) Three-moment
equation

- (C) Maxwell's
reciprocal theorem

- (D) None of
these

**4. The section modulus of a rectangular section is proportional to**

- (A) Area of the
section

- (B) Square of
the area of the section

- (C) Product
of the area and depth

- (D) Product of
the area and width

**5. Pick up the incorrect statement from the following:**

- (A) The C.G. of a circle is at its center

- (B) The C.G. of a triangle is at the intersection of
its medians

- (C) The C.G. of a rectangle is at the
intersection of its diagonals

- (D) The C.G. of a semicircle is at a distance of
r/2 from the center

**6. According to Unwin's formula, the diameter**

*‘d’*of a rivet of plate of thickness ‘*t’*is :- (A)

*d*= 6.05 √

*t*

- (B)

*d*= 1.5

*t*+ 4

- (C)

*d*= √5

*t*

- (D)

*d*= √

*t*+ 1.5

**7. For a beam having fixed ends, the unknown element of the reactions, is**

- (A) Horizontal
components at either end

- (B) Vertical
components at either end

- (C) Horizontal
component at one end and vertical component at the other

- (D) Horizontal
and vertical components at both the ends

**8. If a rigid body is in equilibrium under the action of three forces, then**

- (A) These forces are equal

- (B) The lines of action of these forces meet in
a point

- (C) The lines of action of these forces are
parallel

- (D) Both (B) and (C) above

**9. The materials which have the same elastic properties in all directions, are called**

- (A) Isotropic

- (B) Brittle

- (C) Homogeneous

- (D) Hard

**10. A solid circular shaft of diameter**

*d*is subjected to a torque*T*. The maximum normal stress induced in the shaft, is- (A) Zero

- (B) 16

*T*/

*Ï€d*

^{3}

- (C) 32

*T*/

*Ï€d*

^{3}

- (D) None of these

**11. Frictional force encountered after commencement of motion is called**

- (A) Post friction

- (B) Limiting friction

- (C) Kinematic friction

- (D) Dynamic friction

**12. A three-hinged arch is said to be:**

- (A) Statically
determinate structure

- (B) Statically
indeterminate structure

- (C) A bent beam

- (D) None of
these

**13. The areas of cross-section of a square beam and a circular beam subjected to equal bending moments, are same.**

- (A) Circular
beam is more economical

- (B) Square beam
is more economical

- (C) Both the
beams are equally strong

- (D) Both the
beams are equally economical

**14. A single force and a couple acting in the same plane upon a rigid body**

- (A) Balance each other

- (B) Cannot balance each other

- (C) Produce moment of a couple

- (D) Are equivalent

**15. If the shear force along a section of a beam is zero, the bending moment at the section is**

- (A) Zero

- (B) Maximum

- (C) Minimum

- (D) Average of
maximum-minimum

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