## Q. 21 The degree of static indeterminacy up to which column analogy method can be used is

A. 2

B. 3

C. 4

D. unrestricted

B. 3

## Q. 22 The deflection at any point of a perfect frame can be obtained by applying a unit load at the joint in

A. vertical direction

B. horizontal direction

C. inclined direction

D. the direction in which the deflection is required

D. the direction in which the deflection is required

## Q. 23 The three moments equation is applicable only when

A. the beam is prismatic

B. there is no settlement of supports

C. there is no discontinuity such as hinges within the span

D. the spans are equal

C. there is no discontinuity such as hinges within the span

## Q. 24 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

A. zero length

## Q. 25 The Castigliano’s second theorem can be used to compute deflections

A. in statically determinate structures only

B. for any type of structure

C. at the point under the load only

D. for beams and frames only

B. for any type of structure

## Q. 26 Bending moment at any section in a conjugate beam gives in the actual beam

A. slope

B. curvature

C. deflection

D. bending moment

C. deflection

## Q. 27 For a two‐hinged arch, if one of the supports settles down vertically, then the horizontal thrust

A. is decreased

B. remains unchanged

C. becomes zero

D. is increased

B. remains unchanged

## Q. 28 For a symmetrical two hinged parabolic arch, if one of the supports settles horizontally, then the horizontal thrust

A. is increased

B. remains unchanged

C. is decreased

D. becomes zero

C. is decreased

## Q. 29 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

C. 30 kN.m

## Q. 30 The maximum bending moment due to a train of wheel loads on a simply supported girder

A. always occurs at center of span

B. always occurs under a wheel load

C. never occurs under a wheel load

D. none of the above

B. always occurs under a wheel load

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