MCQ on Theory of Structure

Rajasthan Polytechnic Third Year Paper 2016 – Theory of Structure

The number of independent equations to be satisfied for static equilibrium for a plane structure is
(a) 1
(b) 2
(c) 3
(d) 6

If there are m unkown 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

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

If in a pin jointed plane frame (m+r)>2j, then the frame is
(a) Stable and statically determinate
(b) Stable and statically indeterminate
(c) Unstable
(d) None of the above

A single rolling load of 8 kN rolls along a girder of 15 m span. The abolute maximum bending moment will be
(a) 8 kN-m
(b) 15 kN-m
(c) 30 kN-m
(d) 60 kN-m

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

When a uniformly distributed load, longer than the span of the girder, moves from left to right, then the maximum bending moment at mid section of span occurs when the uniformly distributed load occupies
(a) less than the left half span
(b) whole of left half span
(c) more than the left half span
(d) whole span

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
(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.

A propped cantilever is a beam whose
(a) one end is fixed and other end is free
(b) one end is fixed and other end is supported
(c) both ends simply supported
(d) both ends are fixed

A continuous beam is one which has
(a) less than two supports
(b) two suports only
(c) more than two supports
(d) zero support