Questions and answers for exam Preparation

MCQs

Total Questions : 903 | Page 8 of 91 pages

Question 71. In case of timber structures, the simple bending formula M = fz may be applied for

rectangular beams up to 300 mm depth
all rectangular beams
solid circular beams only
all square cross-section beams

Discuss Question

Answer: Option A. -> rectangular beams up to 300 mm depth

Question 72. As per IS : 875, for the purposes of specifying basic wind velocity, the country has been divided into

4 zones
5 zones
6 zones
7 zones

Discuss Question

Answer: Option C. -> 6 zones

Question 73. The portal bracing in a truss bridge is used to

Transfer load from top of end posts to bearings
Keep the rectangular shape of the bridge cross-section
Stiffen the structure laterally
Prevent the sides-way buckling of top chord

Discuss Question

Answer: Option A. -> Transfer load from top of end posts to bearings

Question 74. The ratio of plastic section modulus to elastic section modulus

is equal to 1
is always less than 1
is always greater than 1
can be less than 1

Discuss Question

Answer: Option C. -> is always greater than 1

Question 75. Bearing stiffeners are provided ati) the supportsii) the mid spaniii) the point of application of concentrated loads The correct answer is

only (i)
both (i) and (ii)
both (i) and (iii)
(i), (ii) and (iii)

Discuss Question

Answer: Option C. -> both (i) and (iii)

Question 76. Battening is preferable when thei) column carries axial load onlyii) space between the two main components is not very largeiii) column is eccentrically loaded The correct answer is

only (i)
only (iii)
(i) and (ii)
(ii) and (iii)

Discuss Question

Answer: Option C. -> (i) and (ii)

Question 77. The web crippling due to excessive bearing stress can be avoided by

increasing the web thickness
providing suitable stiffeners
increasing the length of the bearing plates
none of the above

Discuss Question

Answer: Option C. -> increasing the length of the bearing plates

Question 78. The effect of racking forces is considered in the design ofi) lateral bracesii) chord membersThe correct answer is

only (i)
only (ii)
both (i) and (ii)
none of the above

Discuss Question

Answer: Option A. -> only (i)

Question 79. Study the following statements.i) Top lateral bracing prevents the sidesway buckling of the chord.ii) Sway bracing keeps the rectangular shape of the bridge cross-section.iii) Sway bracing transfers the load from top of end posts to bearings.The correct answer is

only (i)
both (i) and (ii)
both (i) and (iii)
all (i), (ii) and (iii)

Discuss Question

Answer: Option B. -> both (i) and (ii)

Question 80. Select the correct statement

Material cost of a rivet is higher than that of a bolt
Tensile strength of a bolt is lesser than that of a rivet
Bolts are used as a temporary fastening whereas rivets are used as permanent fastenings
Riveting is less noisy than bolting

Discuss Question

Answer: Option C. -> Bolts are used as a temporary fastening whereas rivets are used as permanent fastenings