# Practice Test: Question Set - 02

**1. Pick up the correct statement from the following:**

- (A) The point of
intersection of the bending axis with the cross section of the beam, is called
shear centre

- (B) For
I sections, the shear centre coincides with the centroid of the cross section
of the beam

- (C) For
channels, the shear centre does not coincide its centroid

- (D) All the
above

**2. Keeping breadth constant, depth of a cantilever of length ‘**

*l’*of uniform strength loaded with uniformly distributed load ‘*w’*varies from zero at the free end and- (A) 2

*w*/Ïƒb ×

*l*at the fixed end

- (B) √(3

*w*/Ïƒb ×

*l*) at the fixed end

- (C) √(2

*w*/Ïƒb ×

*l*) at the fixed end

- (D) 3

*w*/Ïƒd ×

*l*at the fixed end

**3. If a three hinged parabolic arch, (span**

*l*, rise*h*) is carrying a uniformly distributed load*w*/unit length over the entire span,- (A) Horizontal
thrust is

*wl*

^{2}/8

*h*

- (B) S.F. will be
zero throughout

- (C) B.M. will be
zero throughout

- (D) All the
above

**4. The force in BC of the truss shown in the given figure, is**

- (A) 3.0

*t*compression

- (B) 3.0

*t*tension

- (C) (3√3/2)

*t*tension

- (D) (3√3/2)

*t*compression

**5.**

*P*=*Ï€*^{2}*EI*/*L*^{2}is the equation for Euler's crippling load if- (A) Both
the ends are fixed

- (B) Both the
ends are hinged

- (C) One
end is fixed and other end is free

- (D) One
end is fixed and other end is hinged

**6. The degree of indeterminacy of the frame in the given figure, is**

- (A) Zero

- (B) 1

- (C) 2

- (D) 3

**7. The forces in the members of simple trusses, may be analyzed by**

- (A) Graphical
method

- (B) Method
of joints

- (C) Method
of sections

- (D) All the
above

**8. A simply supported beam**

*A*carries a point load at its mid span. Another identical beam*B*carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams*A*and*B*, will be- (A) 2/3

- (B) 3/2

- (C) 5/8

- (D) 8/5

**9. A road of uniform cross-section**

*A*and length*L*is deformed by Î´, when subjected to a normal force*P*. The Young's Modulus*E*of the material, is- (A)

*E*=

*P. Î´*/

*A. L*

- (B)

*E*=

*A. Î´*/

*P. L*

- (C)

*E*=

*P. L*/

*A. Î´*

- (D)

*E*=

*P. A*/

*L. Î´*

**10. In case of a simply supported I-section beam of span**

*L*and loaded with a central load*W*, the length of elasto-plastic zone of the plastic hinge, is- (A)

*L*/2

- (B)

*L*/3

- (C)

*L*/4

- (D)

*L*/5

**11. The ratio of maximum shear stress to average shear stress of a circular beam, is**

- (A) 2/3

- (B) 3/2

- (C) 3/4

- (D) 4/3

**12. For calculating the permissible stress Ïƒ**

_{0 }= Ïƒ_{y }/[(1 +*a*(*l*/*r*)^{2}]_{ }is the empirical formula, known as- (A) Straight
line formula

- (B) Parabolic
formula

- (C) Perry's
formula

- (D) Rankine's
formula

**13. Pick up the correct statement from the following:**

- (A) In a loaded
beam, the moment at which the first yield occurs is called yield moment

- (B) In a loaded
beam, the moment at which the entire section of the beam becomes fully plastic,
is called plastic moment

- (C) In a fully
plastic stage of the beam, the neutral axis divides the section in two sections
of equal area

- (D) All the
above

**14. For a strongest rectangular beam cut from a circular log, the ratio of the width and depth, is**

- (A) 0.303

- (B) 0.404

- (C) 0.505

- (D) 0.707

**15. Pick up the correct statement from the following:**

- (A)

*M*=

_{cg}*M*√(

*M*

^{2}+

*r*

^{2}) where letters carry their usual meanings

- (B)

*T*= √(

_{cp}*m*

^{2}+

*T*

^{2})where letters carry their usual meanings

- (C) The torque
which when acting alone would produce maximum shear stress equal to the maximum
shear stress caused by the combined bending and torsion, is called equivalent
torque

- (D) All the
above

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