A short column of external diameter D and internal diameter d, is subjected to a load W, with an eccentricity e, causing zero stress at an extreme fibre. Then the value of ‘e’ must be

1.  D2+d2/8πD

2.  D2+d2/8D

3.  D2-d2/8D

4.  D3-d3/8D2

View Answer  
4
Correct Answer :

D2+d2/8D


Explanation :
No Explanation available for this question

A column of length L is hinged at both the ends and restrained from lateral displacement at midheight. The critical load of the column is given by

1.  (π2 EI)/L2

2.  (2π2 EI)/L2

3.  (4π2 EI)/L2

4.  (π2 EI)/4L2

View Answer  
4
Correct Answer :

(π2 EI)/L2


Explanation :
No Explanation available for this question

Four vertical columns of the same material, height and weight have the same end conditions. The bucking load will be the largest for a column having the cross-section of a/an

1.  Solid square

2.  Thin hollow circle

3.  Solid circle

4.  I-section

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4
Correct Answer :

Thin hollow circle


Explanation :
No Explanation available for this question

If failure in shear along 450 planes to be avoided, then a material subjected to uniaxial tension should have its shear strength equal to at least

1.  Tensile strength

2.  Compressive strength

3.  Half the difference between the tensile and compressive strengths

4.  Half the tensile strength

View Answer  
4
Correct Answer :

Half the tensile strength


Explanation :
No Explanation available for this question

A solid shaft of diameter ‘D’ carries a twisting moment that develops maximum shear stress π. If the shaft is replaced by a hollow one of outside diameter ‘D’ and inside diameter D/2, then the maximum shear stress will be

1.  1.067π

2.  1.143π

3.  1.333π

4.  2π

View Answer  
4
Correct Answer :

1.067π


Explanation :
No Explanation available for this question

A circular shaft can transmit a torque of 5kNm. If the torque is reduced to 4 kNm, then the maximum value of bending moment that can be applied to the shaft is

1.  1 kNm

2.  2 kNm

3.  3 kNm

4.  4 kNm

View Answer  
4
Correct Answer :

3 kNm


Explanation :
No Explanation available for this question

A compound cylinder with inner radius 5cm and outer radius 7cm is made by shrinking one cylinder on to the other cylinder. The junction radius is 6 cm and the junction pressure is 11kg/cm2. The maximum hoop stress developed in the inner cylinder is:

1.  36 kgf/cm2 compression

2.  36 kgf/cm2 tension

3.  72 kgf/cm2 compression

4.  72 kgf/cm2 tension

View Answer  
4
Correct Answer :

72 kgf/cm2 tension


Explanation :
No Explanation available for this question

At a point in a structure, there are two mutually perpendicular tensile stresses of 800 kg/cm2 and 400kg/cm2. If the Poisson’s ratio is µ=0.25, what would be the equivalent stress in simple tension according to Maximum Principal Strain Theory

1.  1200 kg/cm2

2.  900 kg/cm2

3.  700 kg/cm2

4.  400 kg/cm2

View Answer  
4
Correct Answer :

700 kg/cm2


Explanation :
No Explanation available for this question

For a circular column having its ends hinged, the slenderness ratio is 160. The L/d ratio of the column is

1.  80

2.  57

3.  40

4.  20

View Answer  
4
Correct Answer :

40


Explanation :
No Explanation available for this question

A hollow circular column of internal diameter ‘d’ and external diameter ‘1.5d’ is subjected to compressive of load. The maximum distance of the point of application of load from the centre for no tension is

1.  d/8

2.  13d/48

3.  d/4

4.  13d/96

View Answer  
4
Correct Answer :

13d/48


Explanation :
No Explanation available for this question
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