130+ Structural Analysis 1 Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .

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101.	A rigid-jointed plane frame is stable and statically determinate if (Where m is number of members, r is reaction components and j is number of joints)
A.	(m + r) = 2j
B.	(m + r) = 3j
C.	(3m + r) = 3j
D.	(m + 3r) = 3j
Answer» C. (3m + r) = 3j

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102.	In moment distribution method, the sum of distribution factors of all the members meeting at any joint is always
A.	Zero
B.	Less than 1
C.	1
D.	Greater than 1
Answer» C. 1

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103.	When a uniformly distributed load, shorter than the span of the girder, moves from left to right,then the conditions for maximum bending moment at a section is that
A.	The head of the load reaches the section
B.	The tail of the load reaches the section
C.	The load position should be such that the section divides it equally on both sides
D.	The load position should be such that the section divides the load in the same ratio as it divides the span
Answer» D. The load position should be such that the section divides the load in the same ratio as it divides the span

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104.	The width of the analogous column in the method of column analogy is
A.	2/EI
B.	1/EI
C.	1/2 EI
D.	1/4 EI
Answer» B. 1/EI

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105.	Muller Breslau's principle for obtaining influence lines is applicable to (i) Trusses (ii) Statically determinate beams and frames (iii) Statically indeterminate structures, the material of which is elastic and follows Hooke's law (iv) Any statically indeterminate structure The correct answer is
A.	(i), (ii) and (iii)
B.	(i), (ii) and (iv)
C.	(i) and (ii)
D.	Only (i)
Answer» A. (i), (ii) and (iii)

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106.	The degree of static indeterminacy of a rigid-jointed space frame is (Where m, r and j have their usual meanings)
A.	m + r - 2j
B.	m + r - 3j
C.	3m + r - 3j
D.	6m + r - 6j
Answer» D. 6m + r - 6j

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107.	Degree of kinematic indeterminacy of a pin-jointed plane frame is given by
A.	2j - r
B.	j - 2r
C.	3j - r
D.	2j + r
Answer» A. 2j - r

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108.	The number of independent equations to be satisfied for static equilibrium of a plane structure is
A.	1
B.	2
C.	3
D.	6
Answer» C. 3

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109.	The degree of static indeterminacy of a pin-jointed space frame is given by m r j number of joints)
A.	m + r - 2j
B.	m + r - 3j
C.	3m + r - 3j
D.	m + r + 3j
Answer» B. m + r - 3j

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110.	While using three moments equation, a fixed end of a continuous beam is replaced by an additional span of
A.	Zero length
B.	Infinite length
C.	Zero moment of inertia
D.	None of the above
Answer» A. Zero length

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111.	Study the following statements. (i) The displacement method is more useful when degree of kinematic indeterminacy is greater than the degree of static indeterminacy. (ii) The displacement method is more useful when degree of kinematic indeterminacy is less than the degree of static indeterminacy. (iii) The force method is more useful when degree of static indeterminacy is greater than the degree of kinematic indeterminacy. (iv) The force method is more useful when degree of static indeterminacy is less than the degree of kinematic indeterminacy. The correct answer is
A.	(i) and (iii)
B.	(ii) and (iii)
C.	(i) and (iv)
D.	(ii) and (iv)
Answer» D. (ii) and (iv)

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112.	Bending moment at any section in a conjugate beam gives in the actual beam
A.	Slope
B.	Curvature
C.	Deflection
D.	Bending moment
Answer» C. Deflection

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113.	The number of independent displacement components at each joint of a rigid-jointed space frame is
A.	1
B.	2
C.	3
D.	6
Answer» D. 6

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114.	Independent displacement components at each joint of a rigid-jointed plane frame are
A.	Three linear movements
B.	Two linear movements and one rotation
C.	One linear movement and two rotations
D.	Three rotations
Answer» B. Two linear movements and one rotation

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115.	If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by
A.	m + r + 2j
B.	m - r + 2j
C.	m + r - 2j
D.	m + r - 3j
Answer» C. m + r - 2j

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116.	The carryover factor in a prismatic member whose far end is fixed is
A.	0
B.	1/2
C.	3/4
D.	1
Answer» B. 1/2

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117.	Effects of shear force and axial force on plastic moment capacity of a structure are respectively to
A.	Increase and decrease
B.	Increase and increase
C.	Decrease and increase
D.	Decrease and decrease
Answer» D. Decrease and decrease

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118.	The degree of kinematic indeterminacy of a pin-jointed space frame is (Where j is number of joints and r is reaction components)
A.	2j - r
B.	3j - r
C.	j - 2r
D.	j - 3r
Answer» B. 3j - r

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119.	The maximum bending moment due to a train of wheel loads on a simply supported girder
A.	Always occurs at centre of span
B.	Always occurs under a wheel load
C.	Never occurs under a wheel load
D.	None of the above
Answer» B. Always occurs under a wheel load

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120.	Consider the following statements: Sinking of an intermediate support of a continuous beam 1. Reduces the negative moment at support. 2. Increases the negative moment at support. 3. Reduces the positive moment at support. 4. Increases the positive moment at the centre of span. Of these statements
A.	1 and 4 are correct
B.	1 and 3 are correct
C.	2 and 3 are correct
D.	2 and 4 are correct
Answer» A. 1 and 4 are correct

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121.	When a series of wheel loads crosses a simply supported girder, the maximum bending moment under any given wheel load occurs when
A.	The centre of gravity of the load system is midway between the centre of span and wheel load under consideration
B.	The centre of span is midway between the centre of gravity of the load system and the wheel load under consideration
C.	The wheel load under consideration is midway between the centre of span and the centre of gravity of the load system
D.	None of the above
Answer» B. The centre of span is midway between the centre of gravity of the load system and the wheel load under consideration

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122.	Castigliano's first theorem is applicable
A.	For statically determinate structures only
B.	When the system behaves elastically
C.	Only when principle of superposition is valid
D.	None of the above
Answer» C. Only when principle of superposition is valid

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123.	Number of unknown internal forces in each member of a rigid jointed plane frame is
A.	1
B.	2
C.	3
D.	6
Answer» C. 3

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124.	The number of independent equations to be satisfied for static equilibrium in a space structure is
A.	2
B.	3
C.	4
D.	6
Answer» D. 6

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125.	A simply supported beam deflects by 5 mm when it is subjected to a concentrated load of 10 kN at its centre. What will be deflection in a 1/10 model of the beam if the model is subjected to a 1 kN load at its centre?
A.	5 mm
B.	0.5 mm
C.	0.05 mm
D.	0.005 mm
Answer» A. 5 mm

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126.	A pin-jointed plane frame is unstable if (Where m is number of members, r is reaction components and j is number of joints)
A.	(m + r) < 2j
B.	(m + r) = 2j
C.	(m + r) > 2j
D.	None of the above
Answer» A. (m + r) < 2j

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127.	Degree of static indeterminacy of a rigid-jointed plane frame having 15 members, 3 reaction Components and 14 joints is
A.	2
B.	3
C.	6
D.	8
Answer» C. 6

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128.	The degree of static indeterminacy up to which column analogy method can be used is
A.	2
B.	3
C.	4
D.	Unrestricted
Answer» B. 3

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129.	In the slope deflection equations, the deformations are considered to be caused by (i) Bending moment (ii) Shear force (iii) Axial force The correct answer is
A.	Only (i)
B.	(i) and (ii)
C.	(ii) and (iii)
D.	(i), (ii) and (iii)
Answer» A. Only (i)

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130.	A single rolling load of 8 kN rolls along a girder of 15 m span. The absolute maximum bending moment will be
A.	8 kN.m
B.	15 kN.m
C.	30 kN.m
D.	60 kN.m
Answer» C. 30 kN.m

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130+ Structural Analysis 1 Solved MCQs

A rigid-jointed plane frame is stable and statically determinate if (Where m is number of members, r is reaction components and j is number of joints)

In moment distribution method, the sum of distribution factors of all the members meeting at any joint is always

When a uniformly distributed load, shorter than the span of the girder, moves from left to right,then the conditions for maximum bending moment at a section is that

The width of the analogous column in the method of column analogy is

Muller Breslau's principle for obtaining influence lines is applicable to (i) Trusses (ii) Statically determinate beams and frames (iii) Statically indeterminate structures, the material of which is elastic and follows Hooke's law (iv) Any statically indeterminate structure The correct answer is

The degree of static indeterminacy of a rigid-jointed space frame is (Where m, r and j have their usual meanings)

Degree of kinematic indeterminacy of a pin-jointed plane frame is given by

The number of independent equations to be satisfied for static equilibrium of a plane structure is

The degree of static indeterminacy of a pin-jointed space frame is given by m r j number of joints)

While using three moments equation, a fixed end of a continuous beam is replaced by an additional span of

Bending moment at any section in a conjugate beam gives in the actual beam

The number of independent displacement components at each joint of a rigid-jointed space frame is

Independent displacement components at each joint of a rigid-jointed plane frame are

If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by

The carryover factor in a prismatic member whose far end is fixed is

Effects of shear force and axial force on plastic moment capacity of a structure are respectively to

The degree of kinematic indeterminacy of a pin-jointed space frame is (Where j is number of joints and r is reaction components)

The maximum bending moment due to a train of wheel loads on a simply supported girder

Consider the following statements: Sinking of an intermediate support of a continuous beam 1. Reduces the negative moment at support. 2. Increases the negative moment at support. 3. Reduces the positive moment at support. 4. Increases the positive moment at the centre of span. Of these statements

When a series of wheel loads crosses a simply supported girder, the maximum bending moment under any given wheel load occurs when

Castigliano's first theorem is applicable

Number of unknown internal forces in each member of a rigid jointed plane frame is

The number of independent equations to be satisfied for static equilibrium in a space structure is

A simply supported beam deflects by 5 mm when it is subjected to a concentrated load of 10 kN at its centre. What will be deflection in a 1/10 model of the beam if the model is subjected to a 1 kN load at its centre?

A pin-jointed plane frame is unstable if (Where m is number of members, r is reaction components and j is number of joints)

Degree of static indeterminacy of a rigid-jointed plane frame having 15 members, 3 reaction Components and 14 joints is

The degree of static indeterminacy up to which column analogy method can be used is

In the slope deflection equations, the deformations are considered to be caused by (i) Bending moment (ii) Shear force (iii) Axial force The correct answer is

A single rolling load of 8 kN rolls along a girder of 15 m span. The absolute maximum bending moment will be

Muller Breslau's principle for obtaining influence lines is applicable to
(i) Trusses
(ii) Statically determinate beams and frames
(iii) Statically indeterminate structures, the material of which is elastic and follows Hooke's law
(iv) Any statically indeterminate structure
The correct answer is

Consider the following statements:
Sinking of an intermediate support of a continuous beam
1. Reduces the negative moment at support.
2. Increases the negative moment at support.
3. Reduces the positive moment at support.
4. Increases the positive moment at the centre of span.
Of these statements

In the slope deflection equations, the deformations are considered to be caused by
(i) Bending moment
(ii) Shear force
(iii) Axial force
The correct answer is