theory of structures MCQs – Page 8

Practise focused theory of structures questions with marked answers for exam preparation and subject revision.

theory of structures Mcqs

141. The maximum magnitude of shear stress due to shear force F on a rectangular section of area A at the neutral axis, is__________________?
0

A. F/A

B. F/2A

C. 3F/2A

D. 2F/3A

142. The ratio of the maximum deflections of a simply supported beam with a central load W and of a cantilever of same length and with a load W at its free end, is________________?
0

A. 10-Jan

B. 12-Jan

C. 1/16

D. 8-Jan

143. Slenderness ratio of a long column, is_________________?
0

A. Radius of gyration divided by area of cross-section

B. Area of cross-section divided by radius of gyration

C. Area of cross-section divided by least radius of gyration

D. Length of column divided by least radius of gyration

144. Gradually applied static loads do not change with time their_______________?
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A. Magnitude

B. Point of application

C. All the above

D. Direction

145. Pick up the correct statement from the following?
0

A. The bending stress in a section is zero at its neutral axis and maximum at the outer fibres

B. All the above

C. The shear stress is zero at the outer fibres and maximum at the neutral axis

D. The bending stress at the outer fibres, is known as principal stress

146. The force in AC of the truss shown in the given figure, is_________________?
0

A. 4t compression

B. 5t compression

C. 4t tension

D. 5t tension

147. The yield moment of a cross section is defined as the moment that will just produce the yield stress in_________________?
0

A. The inner most fibre of the section

B. The neutral fibre of the section

C. The outer most fibre of the section

D. The fibre everywhere

148. At yield point of a test piece, the material__________________?
0

A. Obeys Hookes law

B. Behaves in an elastic manner

C. Regains its original shape on removal of the load

D. Undergoes plastic deformation

149. A masonry dam (density = 20,000 N/m3) 6 m high, one metre wide at the top and 4 m wide at the base, has vertical water face. The minimum stress at the base of the dam when the reservoir is full, will be_______________________?
0

A. 75 N/m2

B. 75000 N/m2

C. 750 N/m 2

D. 7500 N/m 2

150. The degree of indeterminacy of the frame in the given figure, is__________________?
0

A. Zero

B. 1

C. 3

D. 2

151. The vertical reaction for the arch is________________?
0

A. wa/l

B. wa/2l

C. wl/a

D. wa/2l

152. A three hinged arch is generally hinged at its supports and__________________?
0

A. At one quarter span

B. None of these

C. At the crown

D. Anywhere in the rib

153. A lift of weight W is lifted by a rope with an acceleration f. If the area of cross-section of the rope is A, the stress in the rope is_______________?
0

A. [W (1 + f/ G)]/ A

B. [W (2 + g/f)]/A

C. [W (2 + f/G)]/A

D. (1 g/f)/A

154. Pick up the correct statement from the following?
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A. In a loaded beam, the moment at which the entire section of the beam becomes fully plastic, is called plastic moment

B. In a fully plastic stage of the beam, the neutral axis divides the section in two sections of equal area

C. All the above

D. In a loaded beam, the moment at which the first yield occurs is called yield moment

155. section modulus of a square section of side B and that of a circular section of The ratio of the diameter D, is___________________?
0

A. /16

B. 8-Mar

C. 3 /16

D. 15-Feb

156. For beams of uniform strength, if depth is constant______________?
0

A. Width b M

B. Width b 3 M

C. Width b 1/M

D. Width b M

157. In plastic analysis, the shape factor for a circular section, is_________________?
0

A. 1.5

B. 1.7

C. 1.75

D. 1.6

158. For beams breadth is constant__________________?
0

A. Depth d M

B. Depth d 3

C. Depth d

D. Depth d 1/M

159. The area of the core of a column of cross sectional area A, is_______________?
0

A. (1/3) A

B. (1/12) A

C. (1/6) A

D. (1/18) A

160. A concentrated load P is supported by the free end of a quadrantal ring AB whose end B is fixed. The ratio of the vertical to horizontal deflections of the end A, is______________?
0

A. /6

B. /4

C. /2

D. /3

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