Q.1
Imperfection factor for rolled section is
  • a) 0.1
  • b) 0.21
  • c) 2.1
  • d) 4.9
Q.2
Imperfection factor for welded section is
  • a) 4.9
  • b) 0.21
  • c) 2.1
  • d) 0.49
Q.3
Non-dimensional slenderness ratio is given by
  • a) λLT = √(βbZpfy/Mcr)
  • b) λLT = √(βbZpfyMcr)
  • c) λLT = √(βbZp/Mcr)
  • d) λLT = √(βbZpfy)
Q.4
The check for non- dimensional slenderness ratio is given by
  • a) λLT = 2.4 √(Zefy/Mcr)
  • b) λLT > 2 .4 √(Zefy/Mcr)
  • c) λLT ≤ 1.2 √(Zefy/Mcr)
  • d) λLT ≥ 1.2 √(Zefy/Mcr)
Q.5
Which of the following relation is correct?
  • a) λLT = √(fy/fcr,b)
  • b) λLT = fy/fcr,b
  • c) λLT = (fy/fcr,b)2
  • d) λLT = √(fy fcr,b)
Q.6
The elastic critical moment is given by
  • a) Mcr = βb fcr,b
  • b) Mcr = βbZp / fcr,b
  • c) Mcr = βbZp
  • d) Mcr = βbZp fcr,b
Q.7
Warping constant in elastic critical moment is given by
  • a) (1+βf)βf Iy h2f
  • b) (1-βf)βf Iy h2f
  • c) βf Iy h2f
  • d) (1-βf)/βf Iy h2f
Q.8
St. Venant’s constant is given by
  • a) ∑biti2/3
  • b) ∑biti2
  • c) ∑biti3/3
  • d) ∑biti
Q.9
The value of fcr,b is given by
  • a) fcr,b = [1.1π2E/(LLT/ry)2]{1+1/20[(LLT/ry)/(hf/tf)]2}
  • b) fcr,b = [1.1π2E/(LLT/ry)]{1-1/20[(LLT/ry)/(hf/tf)]}
  • c) fcr,b = [1.1π2E/(LLT/ry)2]{1+1/20[(LLT/ry)/(hf/tf)]2}0.5
  • d) fcr,b = [1.1π2E/(LLT/ry)2]{1-1/20[(LLT/ry)/(hf/tf)]2}0.5
0 h : 0 m : 1 s