Solved GATE Questions on Column and Struts
Question 1. The ratio of Euler’s buckling loads of column with the same parameters having (i) both ends fixed, and (ii) both ends hinged is
(A) 2
(B) 4
(C) 6
(D) 8
GATE-ME-2002
Hint 1. (Ans B)
For both ends fixed,
And for both ends hinged
Question 2. A pin-ended column of length L, modulus of elasticity E and second moment of the cross-sectional area I is loaded centrically by a compressive load P. The critical buckling load (
) is given by
(A) 
(B) 
)
(C) 
(D) 
GATE-ME-2006
Hint 2. (Ans D)
The critical buckling load (
) for a column having length L, modulus of elasticity E and second moment of cross sectional area I is loaded centrically.
Condition : Both ends having pin joint.
i.e., hinged
so n=1
Question 3. The rod PQ of length L with flexural rigidity EI is hinged at both ends. For what minimum force F is it expected to buckle?
(A) 
(B) 
(C) 
(D) 
GATE-ME-2008
Hint 3. (Ans B)
Since both ends hinged, therefore
Also 
Question 4. A column has a rectangular cross-section of 10 mm
20 mm and a length of 1 m. The slenderness ratio of the column is close to
(A) 200
(B) 346
(C) 477
(D) 1000
GATE-ME-2011
Hint 4. (Ans B)
Least radius of gyration will be along the major axis
Slenderness ratio =1000/2.887=3.46
Question 5. For a long slender column of uniform cross section, the ratio of critical buckling load for the case with both ends clamped to the case with both ends hinged is
(A) 1
(B) 2
(C) 4
(D) 8
GATE-ME-2011
Hint 5. (Ans C)
Answer keys
1. (B) 2. (D) 3. (B) 4. (B) 5. (C)
One Response to “Previous Year GATE Questions on Columns and Struts”
Samiksha Maitreya
Excellent