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Q1. | 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 [Wrong Answer] |

B. | m - r + 2j [Wrong Answer] |

C. | m + r - 2j [Correct Answer] |

D. | m + r - 3j [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ The Castigliano's second theorem can be used to compute deflections

in statically determinate structures only

for any type of structure

at the point under the load only

for beams and frames only

⇒ Which of the following is not the displacement method ?

Equilibrium method

Column analogy method

Moment distribution method

Kani's method

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

zero length

infinite length

zero moment of inertia

none of the above

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

Zero

< 1

> 1

= 1

⇒ A load 'W is moving from left to right support on a simply supported beam of span T. The maximum bending moment at 0.4 1 from the left support is

0.16 Wl

0.20 Wl

0.24 Wl

0.25 Wl

⇒ The torsional stiffness of a member can be defined as

Torque for unit moment

Torque for unit twist

Moment for unit twist

Torsion for unit twist

⇒ The fixed support in real beam becomes in the conjugate beam is

Fixed support

Hinged support

Roller support

Free support

⇒ To generate the j th column of the flexibility matrix

a unit force is applied at coordinate j and the displacements are calculated at all coordinates

a unit displacement is applied at co-ordinate j and the forces are calculated at all coordinates

a unit force is applied at coordinate j and the forces are calculated at all coordinates

a unit displacement is applied at co-ordinate j and the displacements are calculated at all co-ordinates

⇒ The basic stress in masonry units having height to width ratio of 1.5 may be increased by a factor of

1.2

1.4

1.6

2.0

⇒ The fixed support in a real beam becomes in the conjugate beam a

roller support

hinged support

fixed support

free end

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

2

3

6

8

⇒ The deformation of a spring produced by a unit load is called

stiffness

flexibility

influence coefficient

unit strain

⇒ The truss can be analysed by the methods of joints when the number of unknown at a joint is equal to

1

2

3

4

⇒ Which of the following methods of structural analysis is a displacement method ?

moment distribution method

column analogy method

three moment equation

none of the above

⇒ Which of the following methods of structural analysis is a force method ?

slope deflection method

column analogy method

moment distribution method

none of the above

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

0

1/2

3/4

1

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

zero

less than 1

1

greater than 1

⇒ Select the correct statement

Flexibility matrix is a square symmetrical matrix

Stiffness matrix is a square symmetrical matrix

both (a) and (b)

none of the above

⇒ For a symmetrical two hinged parabolic arch, if one of the supports settles horizontally, then the horizontal thrust

is increased

is decreased

remains unchanged

becomes zero

⇒ Unequal settlements in the supports of a statically indeterminate structure develop

Member forces

Reactions from supports

No reactions

Strains in some members only

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

three linear movements

two linear movements and one rotation

one linear movement and two rotations

three rotations

⇒ If the horizontal cross-sectional area of a wall is 1200 cm2, then the basic stress shall be multiplied by a reduction factor equal to

0 6

0.75

0.85

0.95

⇒ For strengthening a 50 m long and 5 m high straight compound wall built in brick work, which one of the following would be most suitable?

providing buttresses at certain intervals

providing a deeper foundation

using a richer mortar

using stronger bricks

⇒ A 200 mm thick wall made of modular bricks is 5 m long between cross walls and 3.8 m clear height between RCC slabs at top and bottom. The slenderness ratio of the wall is

15

19

20

25

⇒ The horizontal thrust due to rise in temperature in a semicircular two-hinged arch of radius R is proportional to

R

R

^{2}

1/R

1/R

^{2}

⇒ The method of virtual work in the analysis of structures results is

Compatible deformations

Equilibrium of forces

Stress strain relations

None of these

⇒ In a cavity wall, both leaves of which are load bearing, the effective thickness is taken as

sum of thickness of both leaves

two-third of the sum of thickness of both the leaves

actual thickness of the stronger leaf

larger of (b) and (c)

⇒ For a single point load W moving on a symmetrical three hinged parabolic arch of span L, the maximum sagging moment occurs at a distance x from ends. The value of x is

0.211 L

0.25 L

0.234 L

0.5 L

⇒ The moment distribution method in structural analysis can be treated as

Force method

Displacement method

Flexibility method

None of these

⇒ The three moment equation in structural analysis is basically a

Stiffness method

Displacement method

Energy method

Flexibility method