Directions: In the following question, a statement of Assertion (A) is followed by a statement of Reason (R).
Select the correct option.
Assertion (A): The compressive strength of concrete is significantly influenced by the water-cement ratio.
Reason (R): A higher water-cement ratio leads to more hydration, resulting in increased compressive
strength of concrete.
Consider the following statements related to the limit state design criterion for a safe design of the structure
1. The structure or its elements should not collapse when subjected to the design loads.
2. The structure should not become unfit for use due to cracking or excessive deflection.
3. The structure should reach a limit state during its design life.
Which of the above statement are correct?
Code:
A B C D
Consider the following statements with reference to the design of welded tension
members:
1. The entire cross-sectional area of the connected leg is assumed to contribute to the
effective area in the case of angles.
2. Two angles, back-to-back and tack-welded as per the codal requirements, may be
assumed to behave as a tee-section.
3. A check on slenderness ratio may be necessary in some cases.
Which of the above statements are correct?Consider the following statements:
Bars that extend into a simple support must be able to develop their full strength at a designated point L so that their moment capacity is more than the bending moment at that point. The clauses of the code require that (Ss = 0.85 ssy)
Consider the following statements:
1. An indeterminate structure is not economical from the material stand-point in comparison to a determinate structure.
2. If 'n' redundants in a statically indeterminate structure of 'n' degree indeterminacy are removed, the structure will
become statically determinate but unstable.
3. In the rigid frame analysis, the axial effects are ignored as their influence is negligibly small compared to bending and
shear effects.
Which of these statements is/are correct?1)For solid rectangular vertical members, the
Consider the following statments related to axial and eccentric loading in vertical members and core is a rhombus of diamond shape.
(2)For vertical members subjected to eccentric compressive force, for no tension in the section the eccentricity (e) should be less than
(Where d = depth of section and k = radius of gyration)
choose the correct option.
Statements:
Match the following statements with respect to a beam.
|
A |
Hooke's law |
1 |
Vary linearly with bending moment. |
|
B |
Uniaxial stress |
2 |
Linear elastic material. |
|
C |
Curvature of a beam |
3 |
Depends on the perpendicular distance from the neutral surface. |
|
D |
Bending stress |
|
Vary inversely with moment of inertia |
Choose the correct option
Match the following statements with respect to a beam.
|
A |
Hooke's law |
1 |
Vary linearly with bending moment. |
|
B |
Uniaxial stress |
2 |
Linear elastic material. |
|
C |
Curvature of a beam |
3 |
Depends on the perpendicular distance from the neutral surface. |
|
D |
Bending stress |
|
Vary inversely with moment of inertia |
Choose the correct option
Consider the following statements:
I. If a beam has two axis of symmetry, even then shear -centre does not coincide with
the centroid.
II. For a section having one axis of symmetry, the shear-centre does not coincide with the centroid but lies on the axis of
symmetry.
III. If a load passes through the shear-centre, then there will be only bending in the cross-section and no twisting.
Which of these statements are correct?
Match List-I (Type of structure) with List-II (Statical indeterminacy) and select the correct answer using the codes given
below the lists:
Number of members = m
Number of joints = n
Number of reaction elements = r
|
List- I |
List- II |
||
|
A. |
Plane frame |
1 |
M + r - 3n |
|
B. |
Space truss |
2 |
6 m + r – 6n |
|
C |
Space frame |
3 |
6 m+ r – 3 n |
|
|
|
4 |
3 m + r – 3n |
Codes:
A B CConsider the following statements:
1.An indeterminate structure is not economical from the material stand-point in comparison to a determinate structure.
2.If 'n' redundants in a statically indeterminate structure of 'n' degree indeterminacy are removed, the structure will become statically determinate but unstable.
3.In the rigid frame analysis, the axial effects are ignored as their influence is negligibly small compared to bending and shear effects.
Which of these statements is/are correct?
A circular solid shaft of span L = 5 m is fixed at one and free at the other end. A twisting moment T = 200 kN-m is applied
at the free end. The torsional rigidity GJ is 50000 kN.m/rad. Following statements are made for this shaft.
I. The maximum rotation is 0.02 rad.
II. The torsional strain energy is 2kN-m
With reference to the above statements, which of the following is correct?Match the following
|
A |
Maximum principal stress theory |
i |
Beltrami or Haigh |
|
B |
Maximum principal strain theory |
ii |
Tresca |
|
C |
Maximum stress theory |
iii |
Rankine |
|
D |
Maximum strain energy theory |
iv |
St. Venant |
A B C D
When a shaft of diameter D is subjected to a twisting moment T and a bending moment M, then the maximum normal stress is given by
The Rankine's formula for column is given by
Where
sc - Crushing stress
A - C. S. area of the column
a - Rankine's constant
L - Equivalent length of the column
K - Least radius of gyration
Assertion (A): In the analysis of pin-jointed plane frames, the force method is generally preferable to the displacement
method.
Reason (R): The degrees of freedom for pin- jointed plane frames are generally much larger than the degrees of static
indeterminacy and thus force method requires less formulation and computation than the displacement method