Solve this multiple-choice question and choose the correct option.

Home » Mechanical Engineering » Strength of Materials

Loading idealisation on beams: definition of a concentrated (point) load Choose the statement that best defines a concentrated load in beam theory. Select the correct option.

Difficulty: Easy

Acts at a single point on a beam
Spreads non-uniformly along the entire beam length
Spreads uniformly along the entire beam length
Varies uniformly along the entire beam length

Correct Answer: Acts at a single point on a beam

Explanation:

ConceptA concentrated (point) load is idealised as acting at one point (mathematically a Dirac-type idealisation). Real loads act over an area/length, but if the loaded length is very small relative to span, the point-load model is valid.

Final AnswerActs at a single point on a beam.

← Previous Question Next Question→

More Questions from Strength of Materials

Beam of uniform strength with constant depth: how should the width vary? For a rectangular beam of uniform strength with constant depth d, keep maximum bending stress constant along the span. State how the beam width b must vary with bending moment M(x).
Riveted joints: purpose of caulking operation In plate joints for boilers/tanks, caulking is done after riveting. Identify the primary objective of caulking.
Riveted butt joints: identify the double-cover joint with two rows per main plate Two main plates butt together and are covered by plates on both sides. If there are two rows of rivets per main plate and the rows on each side are opposite each other, name the joint type.
Compression testing of cast iron: fracture orientation In a compression test on a cast iron specimen (a brittle material), indicate the most likely fracture path. Select the correct description.
Relation between shear force and bending moment: extremum condition For a loaded beam, use V = dM/dx. State the value/nature of bending moment at a point where the shear force is zero.
Dam engineering: identify the possible failure modes of a masonry dam Consider a gravity or masonry dam resting on soil or rock foundation. Assess the typical structural failure modes that may cause distress or collapse. Choose the correct comprehensive statement.
Strength of materials terminology: name the energy stored under elastic loading When a body is loaded within the elastic limit, it stores recoverable energy. Identify the correct term for this stored energy (overall, not per unit volume).
Axial stress in a tapering bar: where is the maximum stress located? A bar has a tapering cross-section along its length and carries a constant axial force. State the point along the bar where the axial normal stress is maximum. Choose the correct location.
Torsion formula terminology: identify J/R in the torsion equation Using the torsion relation T/J = τ/R = Gθ/L for circular shafts. State the standard name of the quantity J/R. Choose the correct term.
Bearing stress control in dams: limiting base stress against permissible soil stress For a masonry/gravity dam, to prevent crushing of masonry at the base, compare the maximum base stress with the soil’s permissible compressive stress. Choose the correct relation.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion